Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 1 | //===-- AsmPrinter.cpp - Common AsmPrinter code ---------------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Chris Lattner | 4ee451d | 2007-12-29 20:36:04 +0000 | [diff] [blame] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements the AsmPrinter class. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
Evan Cheng | 932f022 | 2006-03-03 02:04:29 +0000 | [diff] [blame] | 14 | #include "llvm/CodeGen/AsmPrinter.h" |
Evan Cheng | 246ae0d | 2006-03-01 22:18:09 +0000 | [diff] [blame] | 15 | #include "llvm/Assembly/Writer.h" |
Nate Begeman | 8cfa57b | 2005-12-06 06:18:55 +0000 | [diff] [blame] | 16 | #include "llvm/DerivedTypes.h" |
Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 17 | #include "llvm/Constants.h" |
Chris Lattner | 450de39 | 2005-11-10 18:36:17 +0000 | [diff] [blame] | 18 | #include "llvm/Module.h" |
Chris Lattner | 45111d1 | 2010-01-16 21:57:06 +0000 | [diff] [blame] | 19 | #include "llvm/CodeGen/DwarfWriter.h" |
Gordon Henriksen | 5eca075 | 2008-08-17 18:44:35 +0000 | [diff] [blame] | 20 | #include "llvm/CodeGen/GCMetadataPrinter.h" |
Chris Lattner | 3b4fd32 | 2005-11-21 08:25:09 +0000 | [diff] [blame] | 21 | #include "llvm/CodeGen/MachineConstantPool.h" |
David Greene | 1924aab | 2009-11-13 21:34:57 +0000 | [diff] [blame] | 22 | #include "llvm/CodeGen/MachineFrameInfo.h" |
David Greene | fe37ab3 | 2009-08-18 19:22:55 +0000 | [diff] [blame] | 23 | #include "llvm/CodeGen/MachineFunction.h" |
Nate Begeman | 37efe67 | 2006-04-22 18:53:45 +0000 | [diff] [blame] | 24 | #include "llvm/CodeGen/MachineJumpTableInfo.h" |
David Greene | b71d1b2 | 2009-08-10 16:38:07 +0000 | [diff] [blame] | 25 | #include "llvm/CodeGen/MachineLoopInfo.h" |
Chris Lattner | 84bc542 | 2007-12-31 04:13:23 +0000 | [diff] [blame] | 26 | #include "llvm/CodeGen/MachineModuleInfo.h" |
Argyrios Kyrtzidis | cd76240 | 2009-05-07 13:55:51 +0000 | [diff] [blame] | 27 | #include "llvm/Analysis/DebugInfo.h" |
Chris Lattner | 2b2954f | 2009-07-27 21:28:04 +0000 | [diff] [blame] | 28 | #include "llvm/MC/MCContext.h" |
David Greene | 3ac1ab8 | 2009-07-16 22:24:20 +0000 | [diff] [blame] | 29 | #include "llvm/MC/MCInst.h" |
Chris Lattner | a87dea4 | 2009-07-31 18:48:30 +0000 | [diff] [blame] | 30 | #include "llvm/MC/MCSection.h" |
| 31 | #include "llvm/MC/MCStreamer.h" |
Chris Lattner | 7cb384d | 2009-09-12 23:02:08 +0000 | [diff] [blame] | 32 | #include "llvm/MC/MCSymbol.h" |
Evan Cheng | 42bf74b | 2009-03-25 01:47:28 +0000 | [diff] [blame] | 33 | #include "llvm/Support/CommandLine.h" |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 34 | #include "llvm/Support/ErrorHandling.h" |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 35 | #include "llvm/Support/Format.h" |
David Greene | 014700c | 2009-07-13 20:25:48 +0000 | [diff] [blame] | 36 | #include "llvm/Support/FormattedStream.h" |
Chris Lattner | af76e59 | 2009-08-22 20:48:53 +0000 | [diff] [blame] | 37 | #include "llvm/MC/MCAsmInfo.h" |
Chris Lattner | 45111d1 | 2010-01-16 21:57:06 +0000 | [diff] [blame] | 38 | #include "llvm/Target/Mangler.h" |
Owen Anderson | 07000c6 | 2006-05-12 06:33:49 +0000 | [diff] [blame] | 39 | #include "llvm/Target/TargetData.h" |
David Greene | 1924aab | 2009-11-13 21:34:57 +0000 | [diff] [blame] | 40 | #include "llvm/Target/TargetInstrInfo.h" |
Chris Lattner | 0336fdb | 2006-10-06 22:50:56 +0000 | [diff] [blame] | 41 | #include "llvm/Target/TargetLowering.h" |
Chris Lattner | f014412 | 2009-07-28 03:13:23 +0000 | [diff] [blame] | 42 | #include "llvm/Target/TargetLoweringObjectFile.h" |
Evan Cheng | 6547e40 | 2008-07-01 23:18:29 +0000 | [diff] [blame] | 43 | #include "llvm/Target/TargetOptions.h" |
Evan Cheng | da47e6e | 2008-03-15 00:03:38 +0000 | [diff] [blame] | 44 | #include "llvm/Target/TargetRegisterInfo.h" |
Evan Cheng | cc41586 | 2007-11-09 01:32:10 +0000 | [diff] [blame] | 45 | #include "llvm/ADT/SmallPtrSet.h" |
Chris Lattner | fad86b0 | 2008-08-17 07:19:36 +0000 | [diff] [blame] | 46 | #include "llvm/ADT/SmallString.h" |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 47 | #include <cerrno> |
Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 48 | using namespace llvm; |
| 49 | |
Evan Cheng | 42bf74b | 2009-03-25 01:47:28 +0000 | [diff] [blame] | 50 | static cl::opt<cl::boolOrDefault> |
| 51 | AsmVerbose("asm-verbose", cl::desc("Add comments to directives."), |
| 52 | cl::init(cl::BOU_UNSET)); |
| 53 | |
Chris Lattner | 0740441 | 2010-01-22 07:06:15 +0000 | [diff] [blame] | 54 | static bool getVerboseAsm(bool VDef) { |
| 55 | switch (AsmVerbose) { |
| 56 | default: |
| 57 | case cl::BOU_UNSET: return VDef; |
| 58 | case cl::BOU_TRUE: return true; |
| 59 | case cl::BOU_FALSE: return false; |
| 60 | } |
| 61 | } |
| 62 | |
Devang Patel | 1997473 | 2007-05-03 01:11:54 +0000 | [diff] [blame] | 63 | char AsmPrinter::ID = 0; |
David Greene | 7184781 | 2009-07-14 20:18:05 +0000 | [diff] [blame] | 64 | AsmPrinter::AsmPrinter(formatted_raw_ostream &o, TargetMachine &tm, |
Chris Lattner | af76e59 | 2009-08-22 20:48:53 +0000 | [diff] [blame] | 65 | const MCAsmInfo *T, bool VDef) |
Daniel Dunbar | 5bcc8bd | 2009-07-01 01:48:54 +0000 | [diff] [blame] | 66 | : MachineFunctionPass(&ID), FunctionNumber(0), O(o), |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 67 | TM(tm), MAI(T), TRI(tm.getRegisterInfo()), |
Chris Lattner | 2b2954f | 2009-07-27 21:28:04 +0000 | [diff] [blame] | 68 | |
| 69 | OutContext(*new MCContext()), |
Chris Lattner | 90edac0 | 2009-09-14 03:02:37 +0000 | [diff] [blame] | 70 | // FIXME: Pass instprinter to streamer. |
Chris Lattner | 1658202 | 2010-01-20 06:39:07 +0000 | [diff] [blame] | 71 | OutStreamer(*createAsmStreamer(OutContext, O, *T, |
Chris Lattner | 0740441 | 2010-01-22 07:06:15 +0000 | [diff] [blame] | 72 | TM.getTargetData()->isLittleEndian(), |
| 73 | getVerboseAsm(VDef), 0)), |
Chris Lattner | 2b2954f | 2009-07-27 21:28:04 +0000 | [diff] [blame] | 74 | |
Devang Patel | 6b61f58 | 2010-01-16 06:09:35 +0000 | [diff] [blame] | 75 | LastMI(0), LastFn(0), Counter(~0U), PrevDLT(NULL) { |
Chris Lattner | 0de1fc4 | 2009-06-24 19:09:55 +0000 | [diff] [blame] | 76 | DW = 0; MMI = 0; |
Chris Lattner | 0740441 | 2010-01-22 07:06:15 +0000 | [diff] [blame] | 77 | VerboseAsm = getVerboseAsm(VDef); |
Evan Cheng | 42bf74b | 2009-03-25 01:47:28 +0000 | [diff] [blame] | 78 | } |
Chris Lattner | ed13893 | 2005-12-13 06:32:10 +0000 | [diff] [blame] | 79 | |
Gordon Henriksen | c317a60 | 2008-08-17 12:08:44 +0000 | [diff] [blame] | 80 | AsmPrinter::~AsmPrinter() { |
| 81 | for (gcp_iterator I = GCMetadataPrinters.begin(), |
| 82 | E = GCMetadataPrinters.end(); I != E; ++I) |
| 83 | delete I->second; |
Chris Lattner | 2b2954f | 2009-07-27 21:28:04 +0000 | [diff] [blame] | 84 | |
| 85 | delete &OutStreamer; |
| 86 | delete &OutContext; |
Gordon Henriksen | c317a60 | 2008-08-17 12:08:44 +0000 | [diff] [blame] | 87 | } |
Chris Lattner | ed13893 | 2005-12-13 06:32:10 +0000 | [diff] [blame] | 88 | |
Chris Lattner | 38c3988 | 2009-08-03 19:12:26 +0000 | [diff] [blame] | 89 | TargetLoweringObjectFile &AsmPrinter::getObjFileLowering() const { |
Chris Lattner | f014412 | 2009-07-28 03:13:23 +0000 | [diff] [blame] | 90 | return TM.getTargetLowering()->getObjFileLowering(); |
| 91 | } |
| 92 | |
Chris Lattner | dabf07c | 2009-08-18 06:15:16 +0000 | [diff] [blame] | 93 | /// getCurrentSection() - Return the current section we are emitting to. |
| 94 | const MCSection *AsmPrinter::getCurrentSection() const { |
| 95 | return OutStreamer.getCurrentSection(); |
| 96 | } |
| 97 | |
| 98 | |
Gordon Henriksen | ce22477 | 2008-01-07 01:30:38 +0000 | [diff] [blame] | 99 | void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const { |
Dan Gohman | 845012e | 2009-07-31 23:37:33 +0000 | [diff] [blame] | 100 | AU.setPreservesAll(); |
Gordon Henriksen | ce22477 | 2008-01-07 01:30:38 +0000 | [diff] [blame] | 101 | MachineFunctionPass::getAnalysisUsage(AU); |
Gordon Henriksen | 5eca075 | 2008-08-17 18:44:35 +0000 | [diff] [blame] | 102 | AU.addRequired<GCModuleInfo>(); |
David Greene | fe37ab3 | 2009-08-18 19:22:55 +0000 | [diff] [blame] | 103 | if (VerboseAsm) |
David Greene | b71d1b2 | 2009-08-10 16:38:07 +0000 | [diff] [blame] | 104 | AU.addRequired<MachineLoopInfo>(); |
Gordon Henriksen | ce22477 | 2008-01-07 01:30:38 +0000 | [diff] [blame] | 105 | } |
| 106 | |
Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 107 | bool AsmPrinter::doInitialization(Module &M) { |
Chris Lattner | f26e03b | 2009-07-31 17:42:42 +0000 | [diff] [blame] | 108 | // Initialize TargetLoweringObjectFile. |
| 109 | const_cast<TargetLoweringObjectFile&>(getObjFileLowering()) |
| 110 | .Initialize(OutContext, TM); |
| 111 | |
Chris Lattner | c0dba72 | 2010-01-17 18:22:35 +0000 | [diff] [blame] | 112 | Mang = new Mangler(*MAI); |
Chris Lattner | 2c1b159 | 2006-01-23 23:47:53 +0000 | [diff] [blame] | 113 | |
Bob Wilson | 812209a | 2009-09-30 22:06:26 +0000 | [diff] [blame] | 114 | // Allow the target to emit any magic that it wants at the start of the file. |
| 115 | EmitStartOfAsmFile(M); |
Rafael Espindola | 952b839 | 2008-12-03 11:01:37 +0000 | [diff] [blame] | 116 | |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 117 | if (MAI->hasSingleParameterDotFile()) { |
Rafael Espindola | 952b839 | 2008-12-03 11:01:37 +0000 | [diff] [blame] | 118 | /* Very minimal debug info. It is ignored if we emit actual |
Bob Wilson | bc9506f | 2009-09-30 21:26:13 +0000 | [diff] [blame] | 119 | debug info. If we don't, this at least helps the user find where |
Rafael Espindola | 952b839 | 2008-12-03 11:01:37 +0000 | [diff] [blame] | 120 | a function came from. */ |
| 121 | O << "\t.file\t\"" << M.getModuleIdentifier() << "\"\n"; |
| 122 | } |
| 123 | |
Bob Wilson | 812209a | 2009-09-30 22:06:26 +0000 | [diff] [blame] | 124 | GCModuleInfo *MI = getAnalysisIfAvailable<GCModuleInfo>(); |
| 125 | assert(MI && "AsmPrinter didn't require GCModuleInfo?"); |
Gordon Henriksen | 5eca075 | 2008-08-17 18:44:35 +0000 | [diff] [blame] | 126 | for (GCModuleInfo::iterator I = MI->begin(), E = MI->end(); I != E; ++I) |
| 127 | if (GCMetadataPrinter *MP = GetOrCreateGCPrinter(*I)) |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 128 | MP->beginAssembly(O, *this, *MAI); |
Gordon Henriksen | ce22477 | 2008-01-07 01:30:38 +0000 | [diff] [blame] | 129 | |
Chris Lattner | 3e2fa7a | 2006-01-24 04:16:34 +0000 | [diff] [blame] | 130 | if (!M.getModuleInlineAsm().empty()) |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 131 | O << MAI->getCommentString() << " Start of file scope inline assembly\n" |
Chris Lattner | 3e2fa7a | 2006-01-24 04:16:34 +0000 | [diff] [blame] | 132 | << M.getModuleInlineAsm() |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 133 | << '\n' << MAI->getCommentString() |
Jim Laskey | 563321a | 2006-09-06 18:34:40 +0000 | [diff] [blame] | 134 | << " End of file scope inline assembly\n"; |
Chris Lattner | 2c1b159 | 2006-01-23 23:47:53 +0000 | [diff] [blame] | 135 | |
Chris Lattner | b55e068 | 2009-09-24 05:44:53 +0000 | [diff] [blame] | 136 | MMI = getAnalysisIfAvailable<MachineModuleInfo>(); |
| 137 | if (MMI) |
| 138 | MMI->AnalyzeModule(M); |
| 139 | DW = getAnalysisIfAvailable<DwarfWriter>(); |
Sanjiv Gupta | 9a501cf | 2009-11-14 07:22:25 +0000 | [diff] [blame] | 140 | if (DW) |
Chris Lattner | b55e068 | 2009-09-24 05:44:53 +0000 | [diff] [blame] | 141 | DW->BeginModule(&M, MMI, O, this, MAI); |
Devang Patel | 14a55d9 | 2009-06-19 21:54:26 +0000 | [diff] [blame] | 142 | |
Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 143 | return false; |
| 144 | } |
| 145 | |
Chris Lattner | 48d64ba | 2010-01-19 04:39:15 +0000 | [diff] [blame] | 146 | /// EmitGlobalVariable - Emit the specified global variable to the .s file. |
| 147 | void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) { |
| 148 | if (!GV->hasInitializer()) // External globals require no code. |
| 149 | return; |
| 150 | |
| 151 | // Check to see if this is a special global used by LLVM, if so, emit it. |
| 152 | if (EmitSpecialLLVMGlobal(GV)) |
| 153 | return; |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 154 | |
| 155 | MCSymbol *GVSym = GetGlobalValueSymbol(GV); |
| 156 | printVisibility(GVSym, GV->getVisibility()); |
| 157 | |
| 158 | if (MAI->hasDotTypeDotSizeDirective()) { |
| 159 | O << "\t.type\t" << *GVSym; |
| 160 | if (MAI->getCommentString()[0] != '@') |
| 161 | O << ",@object\n"; |
| 162 | else |
| 163 | O << ",%object\n"; |
| 164 | } |
Chris Lattner | 48d64ba | 2010-01-19 04:39:15 +0000 | [diff] [blame] | 165 | |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 166 | SectionKind GVKind = TargetLoweringObjectFile::getKindForGlobal(GV, TM); |
| 167 | |
| 168 | const TargetData *TD = TM.getTargetData(); |
| 169 | unsigned Size = TD->getTypeAllocSize(GV->getType()->getElementType()); |
| 170 | unsigned AlignLog = TD->getPreferredAlignmentLog(GV); |
| 171 | |
Chris Lattner | 9744d61 | 2010-01-19 05:51:42 +0000 | [diff] [blame] | 172 | // Handle common and BSS local symbols (.lcomm). |
| 173 | if (GVKind.isCommon() || GVKind.isBSSLocal()) { |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 174 | if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it. |
| 175 | |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 176 | if (VerboseAsm) { |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 177 | WriteAsOperand(OutStreamer.GetCommentOS(), GV, |
| 178 | /*PrintType=*/false, GV->getParent()); |
| 179 | OutStreamer.GetCommentOS() << '\n'; |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 180 | } |
Chris Lattner | 814819f | 2010-01-19 06:25:51 +0000 | [diff] [blame] | 181 | |
| 182 | // Handle common symbols. |
Chris Lattner | 9744d61 | 2010-01-19 05:51:42 +0000 | [diff] [blame] | 183 | if (GVKind.isCommon()) { |
| 184 | // .comm _foo, 42, 4 |
Chris Lattner | 4ed5438 | 2010-01-19 06:01:04 +0000 | [diff] [blame] | 185 | OutStreamer.EmitCommonSymbol(GVSym, Size, 1 << AlignLog); |
Chris Lattner | 814819f | 2010-01-19 06:25:51 +0000 | [diff] [blame] | 186 | return; |
Chris Lattner | 9744d61 | 2010-01-19 05:51:42 +0000 | [diff] [blame] | 187 | } |
Chris Lattner | 814819f | 2010-01-19 06:25:51 +0000 | [diff] [blame] | 188 | |
| 189 | // Handle local BSS symbols. |
| 190 | if (MAI->hasMachoZeroFillDirective()) { |
| 191 | const MCSection *TheSection = |
| 192 | getObjFileLowering().SectionForGlobal(GV, GVKind, Mang, TM); |
| 193 | // .zerofill __DATA, __bss, _foo, 400, 5 |
| 194 | OutStreamer.EmitZerofill(TheSection, GVSym, Size, 1 << AlignLog); |
| 195 | return; |
| 196 | } |
| 197 | |
| 198 | if (const char *LComm = MAI->getLCOMMDirective()) { |
| 199 | // .lcomm _foo, 42 |
| 200 | O << LComm << *GVSym << ',' << Size; |
| 201 | O << '\n'; |
| 202 | return; |
| 203 | } |
| 204 | |
| 205 | // .local _foo |
| 206 | O << "\t.local\t" << *GVSym << '\n'; |
| 207 | // .comm _foo, 42, 4 |
| 208 | OutStreamer.EmitCommonSymbol(GVSym, Size, 1 << AlignLog); |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 209 | return; |
| 210 | } |
| 211 | |
| 212 | const MCSection *TheSection = |
| 213 | getObjFileLowering().SectionForGlobal(GV, GVKind, Mang, TM); |
| 214 | |
| 215 | // Handle the zerofill directive on darwin, which is a special form of BSS |
| 216 | // emission. |
| 217 | if (GVKind.isBSSExtern() && MAI->hasMachoZeroFillDirective()) { |
| 218 | // .globl _foo |
| 219 | OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global); |
| 220 | // .zerofill __DATA, __common, _foo, 400, 5 |
| 221 | OutStreamer.EmitZerofill(TheSection, GVSym, Size, 1 << AlignLog); |
| 222 | return; |
| 223 | } |
| 224 | |
| 225 | OutStreamer.SwitchSection(TheSection); |
| 226 | |
| 227 | // TODO: Factor into an 'emit linkage' thing that is shared with function |
| 228 | // bodies. |
| 229 | switch (GV->getLinkage()) { |
| 230 | case GlobalValue::CommonLinkage: |
| 231 | case GlobalValue::LinkOnceAnyLinkage: |
| 232 | case GlobalValue::LinkOnceODRLinkage: |
| 233 | case GlobalValue::WeakAnyLinkage: |
| 234 | case GlobalValue::WeakODRLinkage: |
| 235 | case GlobalValue::LinkerPrivateLinkage: |
Chris Lattner | 4c8c668 | 2010-01-19 06:41:24 +0000 | [diff] [blame] | 236 | if (MAI->getWeakDefDirective() != 0) { |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 237 | // .globl _foo |
| 238 | OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global); |
| 239 | // .weak_definition _foo |
Chris Lattner | 4c8c668 | 2010-01-19 06:41:24 +0000 | [diff] [blame] | 240 | OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::WeakDefinition); |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 241 | } else if (const char *LinkOnce = MAI->getLinkOnceDirective()) { |
| 242 | // .globl _foo |
| 243 | OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global); |
| 244 | // .linkonce same_size |
| 245 | O << LinkOnce; |
Chris Lattner | 4c8c668 | 2010-01-19 06:41:24 +0000 | [diff] [blame] | 246 | } else { |
| 247 | // .weak _foo |
| 248 | OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Weak); |
| 249 | } |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 250 | break; |
| 251 | case GlobalValue::DLLExportLinkage: |
| 252 | case GlobalValue::AppendingLinkage: |
| 253 | // FIXME: appending linkage variables should go into a section of |
| 254 | // their name or something. For now, just emit them as external. |
| 255 | case GlobalValue::ExternalLinkage: |
| 256 | // If external or appending, declare as a global symbol. |
| 257 | // .globl _foo |
| 258 | OutStreamer.EmitSymbolAttribute(GVSym, MCStreamer::Global); |
| 259 | break; |
| 260 | case GlobalValue::PrivateLinkage: |
| 261 | case GlobalValue::InternalLinkage: |
| 262 | break; |
| 263 | default: |
| 264 | llvm_unreachable("Unknown linkage type!"); |
| 265 | } |
| 266 | |
| 267 | EmitAlignment(AlignLog, GV); |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 268 | if (VerboseAsm) { |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 269 | WriteAsOperand(OutStreamer.GetCommentOS(), GV, |
| 270 | /*PrintType=*/false, GV->getParent()); |
| 271 | OutStreamer.GetCommentOS() << '\n'; |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 272 | } |
Chris Lattner | 4c8c668 | 2010-01-19 06:41:24 +0000 | [diff] [blame] | 273 | OutStreamer.EmitLabel(GVSym); |
Chris Lattner | 74bfe21 | 2010-01-19 05:38:33 +0000 | [diff] [blame] | 274 | |
| 275 | EmitGlobalConstant(GV->getInitializer()); |
| 276 | |
| 277 | if (MAI->hasDotTypeDotSizeDirective()) |
| 278 | O << "\t.size\t" << *GVSym << ", " << Size << '\n'; |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 279 | |
| 280 | OutStreamer.AddBlankLine(); |
Chris Lattner | 48d64ba | 2010-01-19 04:39:15 +0000 | [diff] [blame] | 281 | } |
| 282 | |
| 283 | |
Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 284 | bool AsmPrinter::doFinalization(Module &M) { |
Chris Lattner | 40bbebd | 2009-07-21 18:38:57 +0000 | [diff] [blame] | 285 | // Emit global variables. |
| 286 | for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); |
| 287 | I != E; ++I) |
Chris Lattner | 48d64ba | 2010-01-19 04:39:15 +0000 | [diff] [blame] | 288 | EmitGlobalVariable(I); |
Chris Lattner | 40bbebd | 2009-07-21 18:38:57 +0000 | [diff] [blame] | 289 | |
Chris Lattner | 1f522fe | 2009-06-24 18:54:37 +0000 | [diff] [blame] | 290 | // Emit final debug information. |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 291 | if (MAI->doesSupportDebugInformation() || MAI->doesSupportExceptionHandling()) |
Chris Lattner | 1f522fe | 2009-06-24 18:54:37 +0000 | [diff] [blame] | 292 | DW->EndModule(); |
| 293 | |
Chris Lattner | 0a7befa | 2009-06-24 18:52:01 +0000 | [diff] [blame] | 294 | // If the target wants to know about weak references, print them all. |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 295 | if (MAI->getWeakRefDirective()) { |
Chris Lattner | 0a7befa | 2009-06-24 18:52:01 +0000 | [diff] [blame] | 296 | // FIXME: This is not lazy, it would be nice to only print weak references |
| 297 | // to stuff that is actually used. Note that doing so would require targets |
| 298 | // to notice uses in operands (due to constant exprs etc). This should |
| 299 | // happen with the MC stuff eventually. |
Rafael Espindola | 15404d0 | 2006-12-18 03:37:18 +0000 | [diff] [blame] | 300 | |
Chris Lattner | 0a7befa | 2009-06-24 18:52:01 +0000 | [diff] [blame] | 301 | // Print out module-level global variables here. |
| 302 | for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); |
| 303 | I != E; ++I) { |
Chris Lattner | 08ce3b4 | 2010-01-16 18:17:26 +0000 | [diff] [blame] | 304 | if (!I->hasExternalWeakLinkage()) continue; |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 305 | O << MAI->getWeakRefDirective() << *GetGlobalValueSymbol(I) << '\n'; |
Chris Lattner | 0a7befa | 2009-06-24 18:52:01 +0000 | [diff] [blame] | 306 | } |
| 307 | |
Chris Lattner | c6fdced | 2009-08-03 23:10:34 +0000 | [diff] [blame] | 308 | for (Module::const_iterator I = M.begin(), E = M.end(); I != E; ++I) { |
Chris Lattner | 08ce3b4 | 2010-01-16 18:17:26 +0000 | [diff] [blame] | 309 | if (!I->hasExternalWeakLinkage()) continue; |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 310 | O << MAI->getWeakRefDirective() << *GetGlobalValueSymbol(I) << '\n'; |
Chris Lattner | 0a7befa | 2009-06-24 18:52:01 +0000 | [diff] [blame] | 311 | } |
Rafael Espindola | 15404d0 | 2006-12-18 03:37:18 +0000 | [diff] [blame] | 312 | } |
| 313 | |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 314 | if (MAI->getSetDirective()) { |
Dan Gohman | d19a53b | 2008-06-30 22:03:41 +0000 | [diff] [blame] | 315 | O << '\n'; |
Anton Korobeynikov | 8b0a8c8 | 2007-04-25 14:27:10 +0000 | [diff] [blame] | 316 | for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end(); |
Chris Lattner | 0a7befa | 2009-06-24 18:52:01 +0000 | [diff] [blame] | 317 | I != E; ++I) { |
Chris Lattner | 5c40e69 | 2010-01-16 01:17:26 +0000 | [diff] [blame] | 318 | MCSymbol *Name = GetGlobalValueSymbol(I); |
Anton Korobeynikov | 325be7c | 2007-09-06 17:21:48 +0000 | [diff] [blame] | 319 | |
| 320 | const GlobalValue *GV = cast<GlobalValue>(I->getAliasedGlobal()); |
Chris Lattner | 5c40e69 | 2010-01-16 01:17:26 +0000 | [diff] [blame] | 321 | MCSymbol *Target = GetGlobalValueSymbol(GV); |
Anton Korobeynikov | 541af7f | 2008-09-24 22:21:04 +0000 | [diff] [blame] | 322 | |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 323 | if (I->hasExternalLinkage() || !MAI->getWeakRefDirective()) |
| 324 | O << "\t.globl\t" << *Name << '\n'; |
| 325 | else if (I->hasWeakLinkage()) |
| 326 | O << MAI->getWeakRefDirective() << *Name << '\n'; |
| 327 | else |
Chris Lattner | 1059549 | 2010-01-16 01:37:14 +0000 | [diff] [blame] | 328 | assert(I->hasLocalLinkage() && "Invalid alias linkage"); |
Anton Korobeynikov | 22c9e65 | 2008-03-11 21:41:14 +0000 | [diff] [blame] | 329 | |
Anton Korobeynikov | 541af7f | 2008-09-24 22:21:04 +0000 | [diff] [blame] | 330 | printVisibility(Name, I->getVisibility()); |
Anton Korobeynikov | 22c9e65 | 2008-03-11 21:41:14 +0000 | [diff] [blame] | 331 | |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 332 | O << MAI->getSetDirective() << ' ' << *Name << ", " << *Target << '\n'; |
Anton Korobeynikov | 8b0a8c8 | 2007-04-25 14:27:10 +0000 | [diff] [blame] | 333 | } |
| 334 | } |
| 335 | |
Duncan Sands | 1465d61 | 2009-01-28 13:14:17 +0000 | [diff] [blame] | 336 | GCModuleInfo *MI = getAnalysisIfAvailable<GCModuleInfo>(); |
Gordon Henriksen | 5eca075 | 2008-08-17 18:44:35 +0000 | [diff] [blame] | 337 | assert(MI && "AsmPrinter didn't require GCModuleInfo?"); |
| 338 | for (GCModuleInfo::iterator I = MI->end(), E = MI->begin(); I != E; ) |
| 339 | if (GCMetadataPrinter *MP = GetOrCreateGCPrinter(*--I)) |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 340 | MP->finishAssembly(O, *this, *MAI); |
Gordon Henriksen | ce22477 | 2008-01-07 01:30:38 +0000 | [diff] [blame] | 341 | |
Dan Gohman | a779a98 | 2008-05-05 00:28:39 +0000 | [diff] [blame] | 342 | // If we don't have any trampolines, then we don't require stack memory |
| 343 | // to be executable. Some targets have a directive to declare this. |
Chris Lattner | 0a7befa | 2009-06-24 18:52:01 +0000 | [diff] [blame] | 344 | Function *InitTrampolineIntrinsic = M.getFunction("llvm.init.trampoline"); |
Dan Gohman | a779a98 | 2008-05-05 00:28:39 +0000 | [diff] [blame] | 345 | if (!InitTrampolineIntrinsic || InitTrampolineIntrinsic->use_empty()) |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 346 | if (MAI->getNonexecutableStackDirective()) |
| 347 | O << MAI->getNonexecutableStackDirective() << '\n'; |
Dan Gohman | a779a98 | 2008-05-05 00:28:39 +0000 | [diff] [blame] | 348 | |
Chris Lattner | bd23d5f | 2009-09-18 20:17:03 +0000 | [diff] [blame] | 349 | |
| 350 | // Allow the target to emit any magic that it wants at the end of the file, |
| 351 | // after everything else has gone out. |
| 352 | EmitEndOfAsmFile(M); |
| 353 | |
Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 354 | delete Mang; Mang = 0; |
Chris Lattner | 0de1fc4 | 2009-06-24 19:09:55 +0000 | [diff] [blame] | 355 | DW = 0; MMI = 0; |
Chris Lattner | 2b2954f | 2009-07-27 21:28:04 +0000 | [diff] [blame] | 356 | |
| 357 | OutStreamer.Finish(); |
Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 358 | return false; |
| 359 | } |
| 360 | |
Chris Lattner | 25045bd | 2005-11-21 07:51:36 +0000 | [diff] [blame] | 361 | void AsmPrinter::SetupMachineFunction(MachineFunction &MF) { |
Chris Lattner | 412c3a5 | 2010-01-16 01:24:10 +0000 | [diff] [blame] | 362 | // Get the function symbol. |
Chris Lattner | d1947ed | 2010-01-15 23:55:16 +0000 | [diff] [blame] | 363 | CurrentFnSym = GetGlobalValueSymbol(MF.getFunction()); |
Evan Cheng | 347d39f | 2007-10-14 05:57:21 +0000 | [diff] [blame] | 364 | IncrementFunctionNumber(); |
David Greene | b71d1b2 | 2009-08-10 16:38:07 +0000 | [diff] [blame] | 365 | |
Chris Lattner | 25d812b | 2009-09-16 00:35:39 +0000 | [diff] [blame] | 366 | if (VerboseAsm) |
David Greene | b71d1b2 | 2009-08-10 16:38:07 +0000 | [diff] [blame] | 367 | LI = &getAnalysis<MachineLoopInfo>(); |
Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 368 | } |
| 369 | |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 370 | namespace { |
| 371 | // SectionCPs - Keep track the alignment, constpool entries per Section. |
| 372 | struct SectionCPs { |
Chris Lattner | a87dea4 | 2009-07-31 18:48:30 +0000 | [diff] [blame] | 373 | const MCSection *S; |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 374 | unsigned Alignment; |
| 375 | SmallVector<unsigned, 4> CPEs; |
Douglas Gregor | cabdd74 | 2009-12-19 07:05:23 +0000 | [diff] [blame] | 376 | SectionCPs(const MCSection *s, unsigned a) : S(s), Alignment(a) {} |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 377 | }; |
| 378 | } |
| 379 | |
Chris Lattner | 3b4fd32 | 2005-11-21 08:25:09 +0000 | [diff] [blame] | 380 | /// EmitConstantPool - Print to the current output stream assembly |
| 381 | /// representations of the constants in the constant pool MCP. This is |
| 382 | /// used to print out constants which have been "spilled to memory" by |
| 383 | /// the code generator. |
| 384 | /// |
| 385 | void AsmPrinter::EmitConstantPool(MachineConstantPool *MCP) { |
Chris Lattner | fa77d43 | 2006-02-09 04:22:52 +0000 | [diff] [blame] | 386 | const std::vector<MachineConstantPoolEntry> &CP = MCP->getConstants(); |
Chris Lattner | 3b4fd32 | 2005-11-21 08:25:09 +0000 | [diff] [blame] | 387 | if (CP.empty()) return; |
Evan Cheng | 2d2cec1 | 2006-06-29 00:26:09 +0000 | [diff] [blame] | 388 | |
Anton Korobeynikov | 088ae83 | 2008-09-24 22:17:59 +0000 | [diff] [blame] | 389 | // Calculate sections for constant pool entries. We collect entries to go into |
| 390 | // the same section together to reduce amount of section switch statements. |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 391 | SmallVector<SectionCPs, 4> CPSections; |
Chris Lattner | 3b4fd32 | 2005-11-21 08:25:09 +0000 | [diff] [blame] | 392 | for (unsigned i = 0, e = CP.size(); i != e; ++i) { |
Chris Lattner | 298414e | 2009-07-22 00:28:43 +0000 | [diff] [blame] | 393 | const MachineConstantPoolEntry &CPE = CP[i]; |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 394 | unsigned Align = CPE.getAlignment(); |
Chris Lattner | 5c2f789 | 2009-07-26 06:26:55 +0000 | [diff] [blame] | 395 | |
| 396 | SectionKind Kind; |
| 397 | switch (CPE.getRelocationInfo()) { |
| 398 | default: llvm_unreachable("Unknown section kind"); |
Chris Lattner | 2798119 | 2009-08-01 23:57:16 +0000 | [diff] [blame] | 399 | case 2: Kind = SectionKind::getReadOnlyWithRel(); break; |
Chris Lattner | 4c50922 | 2009-07-26 07:00:12 +0000 | [diff] [blame] | 400 | case 1: |
Chris Lattner | 2798119 | 2009-08-01 23:57:16 +0000 | [diff] [blame] | 401 | Kind = SectionKind::getReadOnlyWithRelLocal(); |
Chris Lattner | 4c50922 | 2009-07-26 07:00:12 +0000 | [diff] [blame] | 402 | break; |
Chris Lattner | 5c2f789 | 2009-07-26 06:26:55 +0000 | [diff] [blame] | 403 | case 0: |
Chris Lattner | 4c50922 | 2009-07-26 07:00:12 +0000 | [diff] [blame] | 404 | switch (TM.getTargetData()->getTypeAllocSize(CPE.getType())) { |
Chris Lattner | 2798119 | 2009-08-01 23:57:16 +0000 | [diff] [blame] | 405 | case 4: Kind = SectionKind::getMergeableConst4(); break; |
| 406 | case 8: Kind = SectionKind::getMergeableConst8(); break; |
| 407 | case 16: Kind = SectionKind::getMergeableConst16();break; |
| 408 | default: Kind = SectionKind::getMergeableConst(); break; |
Chris Lattner | 4c50922 | 2009-07-26 07:00:12 +0000 | [diff] [blame] | 409 | } |
Chris Lattner | 5c2f789 | 2009-07-26 06:26:55 +0000 | [diff] [blame] | 410 | } |
| 411 | |
Chris Lattner | 83d77fa | 2009-08-01 23:46:12 +0000 | [diff] [blame] | 412 | const MCSection *S = getObjFileLowering().getSectionForConstant(Kind); |
Chris Lattner | 298414e | 2009-07-22 00:28:43 +0000 | [diff] [blame] | 413 | |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 414 | // The number of sections are small, just do a linear search from the |
| 415 | // last section to the first. |
| 416 | bool Found = false; |
| 417 | unsigned SecIdx = CPSections.size(); |
| 418 | while (SecIdx != 0) { |
| 419 | if (CPSections[--SecIdx].S == S) { |
| 420 | Found = true; |
| 421 | break; |
| 422 | } |
| 423 | } |
| 424 | if (!Found) { |
| 425 | SecIdx = CPSections.size(); |
| 426 | CPSections.push_back(SectionCPs(S, Align)); |
| 427 | } |
| 428 | |
| 429 | if (Align > CPSections[SecIdx].Alignment) |
| 430 | CPSections[SecIdx].Alignment = Align; |
| 431 | CPSections[SecIdx].CPEs.push_back(i); |
Evan Cheng | 2d2cec1 | 2006-06-29 00:26:09 +0000 | [diff] [blame] | 432 | } |
| 433 | |
Anton Korobeynikov | 088ae83 | 2008-09-24 22:17:59 +0000 | [diff] [blame] | 434 | // Now print stuff into the calculated sections. |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 435 | for (unsigned i = 0, e = CPSections.size(); i != e; ++i) { |
Chris Lattner | 6c2f9e1 | 2009-08-19 05:49:37 +0000 | [diff] [blame] | 436 | OutStreamer.SwitchSection(CPSections[i].S); |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 437 | EmitAlignment(Log2_32(CPSections[i].Alignment)); |
Evan Cheng | 2d2cec1 | 2006-06-29 00:26:09 +0000 | [diff] [blame] | 438 | |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 439 | unsigned Offset = 0; |
| 440 | for (unsigned j = 0, ee = CPSections[i].CPEs.size(); j != ee; ++j) { |
| 441 | unsigned CPI = CPSections[i].CPEs[j]; |
| 442 | MachineConstantPoolEntry CPE = CP[CPI]; |
Anton Korobeynikov | 088ae83 | 2008-09-24 22:17:59 +0000 | [diff] [blame] | 443 | |
Chris Lattner | 3029f92 | 2006-02-09 04:46:04 +0000 | [diff] [blame] | 444 | // Emit inter-object padding for alignment. |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 445 | unsigned AlignMask = CPE.getAlignment() - 1; |
| 446 | unsigned NewOffset = (Offset + AlignMask) & ~AlignMask; |
Chris Lattner | aaec205 | 2010-01-19 19:46:13 +0000 | [diff] [blame] | 447 | OutStreamer.EmitFill(NewOffset - Offset, 0/*fillval*/, 0/*addrspace*/); |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 448 | |
| 449 | const Type *Ty = CPE.getType(); |
Duncan Sands | 777d230 | 2009-05-09 07:06:46 +0000 | [diff] [blame] | 450 | Offset = NewOffset + TM.getTargetData()->getTypeAllocSize(Ty); |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 451 | |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 452 | O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_' |
Dan Gohman | a12e9d7 | 2009-08-12 18:32:22 +0000 | [diff] [blame] | 453 | << CPI << ':'; |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 454 | if (VerboseAsm) { |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 455 | O.PadToColumn(MAI->getCommentColumn()); |
| 456 | O << MAI->getCommentString() << " constant "; |
Dan Gohman | cf20ac4 | 2009-08-13 01:36:44 +0000 | [diff] [blame] | 457 | WriteTypeSymbolic(O, CPE.getType(), MF->getFunction()->getParent()); |
Anton Korobeynikov | 088ae83 | 2008-09-24 22:17:59 +0000 | [diff] [blame] | 458 | } |
Evan Cheng | 1606e8e | 2009-03-13 07:51:59 +0000 | [diff] [blame] | 459 | O << '\n'; |
| 460 | if (CPE.isMachineConstantPoolEntry()) |
| 461 | EmitMachineConstantPoolValue(CPE.Val.MachineCPVal); |
| 462 | else |
| 463 | EmitGlobalConstant(CPE.Val.ConstVal); |
Chris Lattner | 3029f92 | 2006-02-09 04:46:04 +0000 | [diff] [blame] | 464 | } |
Chris Lattner | 3b4fd32 | 2005-11-21 08:25:09 +0000 | [diff] [blame] | 465 | } |
| 466 | } |
| 467 | |
Nate Begeman | 37efe67 | 2006-04-22 18:53:45 +0000 | [diff] [blame] | 468 | /// EmitJumpTableInfo - Print assembly representations of the jump tables used |
| 469 | /// by the current function to the current output stream. |
| 470 | /// |
Chris Lattner | 1da31ee | 2006-10-05 03:01:21 +0000 | [diff] [blame] | 471 | void AsmPrinter::EmitJumpTableInfo(MachineJumpTableInfo *MJTI, |
| 472 | MachineFunction &MF) { |
Nate Begeman | 37efe67 | 2006-04-22 18:53:45 +0000 | [diff] [blame] | 473 | const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables(); |
| 474 | if (JT.empty()) return; |
Anton Korobeynikov | 9de1934 | 2007-11-14 09:18:41 +0000 | [diff] [blame] | 475 | |
Jim Laskey | acd80ac | 2006-12-14 19:17:33 +0000 | [diff] [blame] | 476 | bool IsPic = TM.getRelocationModel() == Reloc::PIC_; |
Nate Begeman | 4d9bbdc | 2006-07-27 16:46:58 +0000 | [diff] [blame] | 477 | |
Nate Begeman | 2f1ae88 | 2006-07-27 01:13:04 +0000 | [diff] [blame] | 478 | // Pick the directive to use to print the jump table entries, and switch to |
| 479 | // the appropriate section. |
Jim Laskey | acd80ac | 2006-12-14 19:17:33 +0000 | [diff] [blame] | 480 | TargetLowering *LoweringInfo = TM.getTargetLowering(); |
Anton Korobeynikov | 24287dd | 2006-12-19 21:04:20 +0000 | [diff] [blame] | 481 | |
Anton Korobeynikov | e87f52d | 2008-07-09 13:27:16 +0000 | [diff] [blame] | 482 | const Function *F = MF.getFunction(); |
Evan Cheng | b13bafe | 2009-06-18 20:37:15 +0000 | [diff] [blame] | 483 | bool JTInDiffSection = false; |
Chris Lattner | 83d77fa | 2009-08-01 23:46:12 +0000 | [diff] [blame] | 484 | if (F->isWeakForLinker() || |
| 485 | (IsPic && !LoweringInfo->usesGlobalOffsetTable())) { |
Jim Laskey | acd80ac | 2006-12-14 19:17:33 +0000 | [diff] [blame] | 486 | // In PIC mode, we need to emit the jump table to the same section as the |
| 487 | // function body itself, otherwise the label differences won't make sense. |
Anton Korobeynikov | e87f52d | 2008-07-09 13:27:16 +0000 | [diff] [blame] | 488 | // We should also do if the section name is NULL or function is declared in |
| 489 | // discardable section. |
Chris Lattner | 6c2f9e1 | 2009-08-19 05:49:37 +0000 | [diff] [blame] | 490 | OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, |
| 491 | TM)); |
Nate Begeman | 2f1ae88 | 2006-07-27 01:13:04 +0000 | [diff] [blame] | 492 | } else { |
Chris Lattner | 83d77fa | 2009-08-01 23:46:12 +0000 | [diff] [blame] | 493 | // Otherwise, drop it in the readonly section. |
| 494 | const MCSection *ReadOnlySection = |
Chris Lattner | 2798119 | 2009-08-01 23:57:16 +0000 | [diff] [blame] | 495 | getObjFileLowering().getSectionForConstant(SectionKind::getReadOnly()); |
Chris Lattner | 6c2f9e1 | 2009-08-19 05:49:37 +0000 | [diff] [blame] | 496 | OutStreamer.SwitchSection(ReadOnlySection); |
Evan Cheng | b13bafe | 2009-06-18 20:37:15 +0000 | [diff] [blame] | 497 | JTInDiffSection = true; |
Nate Begeman | 2f1ae88 | 2006-07-27 01:13:04 +0000 | [diff] [blame] | 498 | } |
Jim Laskey | acd80ac | 2006-12-14 19:17:33 +0000 | [diff] [blame] | 499 | |
| 500 | EmitAlignment(Log2_32(MJTI->getAlignment())); |
Chris Lattner | 0c4e678 | 2006-07-15 01:34:12 +0000 | [diff] [blame] | 501 | |
Nate Begeman | 37efe67 | 2006-04-22 18:53:45 +0000 | [diff] [blame] | 502 | for (unsigned i = 0, e = JT.size(); i != e; ++i) { |
Nate Begeman | 52a51e38 | 2006-08-12 21:29:52 +0000 | [diff] [blame] | 503 | const std::vector<MachineBasicBlock*> &JTBBs = JT[i].MBBs; |
Chris Lattner | 0737188 | 2006-10-28 18:10:06 +0000 | [diff] [blame] | 504 | |
| 505 | // If this jump table was deleted, ignore it. |
| 506 | if (JTBBs.empty()) continue; |
Nate Begeman | 52a51e38 | 2006-08-12 21:29:52 +0000 | [diff] [blame] | 507 | |
| 508 | // For PIC codegen, if possible we want to use the SetDirective to reduce |
| 509 | // the number of relocations the assembler will generate for the jump table. |
| 510 | // Set directives are all printed before the jump table itself. |
Evan Cheng | cc41586 | 2007-11-09 01:32:10 +0000 | [diff] [blame] | 511 | SmallPtrSet<MachineBasicBlock*, 16> EmittedSets; |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 512 | if (MAI->getSetDirective() && IsPic) |
Nate Begeman | 52a51e38 | 2006-08-12 21:29:52 +0000 | [diff] [blame] | 513 | for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii) |
Evan Cheng | cc41586 | 2007-11-09 01:32:10 +0000 | [diff] [blame] | 514 | if (EmittedSets.insert(JTBBs[ii])) |
| 515 | printPICJumpTableSetLabel(i, JTBBs[ii]); |
Nate Begeman | 52a51e38 | 2006-08-12 21:29:52 +0000 | [diff] [blame] | 516 | |
Chris Lattner | 7c30191 | 2009-09-13 19:02:16 +0000 | [diff] [blame] | 517 | // On some targets (e.g. Darwin) we want to emit two consequtive labels |
Chris Lattner | 393a8ee | 2007-01-18 01:12:56 +0000 | [diff] [blame] | 518 | // before each jump table. The first label is never referenced, but tells |
| 519 | // the assembler and linker the extents of the jump table object. The |
| 520 | // second label is actually referenced by the code. |
Chris Lattner | 7c30191 | 2009-09-13 19:02:16 +0000 | [diff] [blame] | 521 | if (JTInDiffSection && MAI->getLinkerPrivateGlobalPrefix()[0]) { |
| 522 | O << MAI->getLinkerPrivateGlobalPrefix() |
| 523 | << "JTI" << getFunctionNumber() << '_' << i << ":\n"; |
Evan Cheng | b13bafe | 2009-06-18 20:37:15 +0000 | [diff] [blame] | 524 | } |
Chris Lattner | 393a8ee | 2007-01-18 01:12:56 +0000 | [diff] [blame] | 525 | |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 526 | O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() |
Evan Cheng | 347d39f | 2007-10-14 05:57:21 +0000 | [diff] [blame] | 527 | << '_' << i << ":\n"; |
Nate Begeman | 52a51e38 | 2006-08-12 21:29:52 +0000 | [diff] [blame] | 528 | |
Nate Begeman | 37efe67 | 2006-04-22 18:53:45 +0000 | [diff] [blame] | 529 | for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii) { |
Anton Korobeynikov | 9de1934 | 2007-11-14 09:18:41 +0000 | [diff] [blame] | 530 | printPICJumpTableEntry(MJTI, JTBBs[ii], i); |
Nate Begeman | 37efe67 | 2006-04-22 18:53:45 +0000 | [diff] [blame] | 531 | O << '\n'; |
| 532 | } |
| 533 | } |
| 534 | } |
| 535 | |
Anton Korobeynikov | 9de1934 | 2007-11-14 09:18:41 +0000 | [diff] [blame] | 536 | void AsmPrinter::printPICJumpTableEntry(const MachineJumpTableInfo *MJTI, |
| 537 | const MachineBasicBlock *MBB, |
| 538 | unsigned uid) const { |
Chris Lattner | b3ac6e4 | 2009-08-11 20:29:57 +0000 | [diff] [blame] | 539 | bool isPIC = TM.getRelocationModel() == Reloc::PIC_; |
Anton Korobeynikov | 9de1934 | 2007-11-14 09:18:41 +0000 | [diff] [blame] | 540 | |
| 541 | // Use JumpTableDirective otherwise honor the entry size from the jump table |
| 542 | // info. |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 543 | const char *JTEntryDirective = MAI->getJumpTableDirective(isPIC); |
Anton Korobeynikov | 9de1934 | 2007-11-14 09:18:41 +0000 | [diff] [blame] | 544 | bool HadJTEntryDirective = JTEntryDirective != NULL; |
| 545 | if (!HadJTEntryDirective) { |
| 546 | JTEntryDirective = MJTI->getEntrySize() == 4 ? |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 547 | MAI->getData32bitsDirective() : MAI->getData64bitsDirective(); |
Anton Korobeynikov | 9de1934 | 2007-11-14 09:18:41 +0000 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | O << JTEntryDirective << ' '; |
| 551 | |
| 552 | // If we have emitted set directives for the jump table entries, print |
| 553 | // them rather than the entries themselves. If we're emitting PIC, then |
| 554 | // emit the table entries as differences between two text section labels. |
| 555 | // If we're emitting non-PIC code, then emit the entries as direct |
| 556 | // references to the target basic blocks. |
Chris Lattner | b3ac6e4 | 2009-08-11 20:29:57 +0000 | [diff] [blame] | 557 | if (!isPIC) { |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 558 | O << *GetMBBSymbol(MBB->getNumber()); |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 559 | } else if (MAI->getSetDirective()) { |
| 560 | O << MAI->getPrivateGlobalPrefix() << getFunctionNumber() |
Chris Lattner | b3ac6e4 | 2009-08-11 20:29:57 +0000 | [diff] [blame] | 561 | << '_' << uid << "_set_" << MBB->getNumber(); |
Anton Korobeynikov | 9de1934 | 2007-11-14 09:18:41 +0000 | [diff] [blame] | 562 | } else { |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 563 | O << *GetMBBSymbol(MBB->getNumber()); |
Chris Lattner | b3ac6e4 | 2009-08-11 20:29:57 +0000 | [diff] [blame] | 564 | // If the arch uses custom Jump Table directives, don't calc relative to |
| 565 | // JT |
| 566 | if (!HadJTEntryDirective) |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 567 | O << '-' << MAI->getPrivateGlobalPrefix() << "JTI" |
Chris Lattner | b3ac6e4 | 2009-08-11 20:29:57 +0000 | [diff] [blame] | 568 | << getFunctionNumber() << '_' << uid; |
Anton Korobeynikov | 9de1934 | 2007-11-14 09:18:41 +0000 | [diff] [blame] | 569 | } |
| 570 | } |
| 571 | |
| 572 | |
Chris Lattner | ed13893 | 2005-12-13 06:32:10 +0000 | [diff] [blame] | 573 | /// EmitSpecialLLVMGlobal - Check to see if the specified global is a |
| 574 | /// special global used by LLVM. If so, emit it and return true, otherwise |
| 575 | /// do nothing and return false. |
| 576 | bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) { |
Daniel Dunbar | 03d7651 | 2009-07-25 23:55:21 +0000 | [diff] [blame] | 577 | if (GV->getName() == "llvm.used") { |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 578 | if (MAI->getUsedDirective() != 0) // No need to emit this at all. |
Andrew Lenharth | b753a9b | 2007-08-22 19:33:11 +0000 | [diff] [blame] | 579 | EmitLLVMUsedList(GV->getInitializer()); |
| 580 | return true; |
| 581 | } |
| 582 | |
Chris Lattner | 401e10c | 2009-07-20 06:14:25 +0000 | [diff] [blame] | 583 | // Ignore debug and non-emitted data. This handles llvm.compiler.used. |
Chris Lattner | 266c7bb | 2009-04-13 05:44:34 +0000 | [diff] [blame] | 584 | if (GV->getSection() == "llvm.metadata" || |
| 585 | GV->hasAvailableExternallyLinkage()) |
| 586 | return true; |
Jim Laskey | 7809811 | 2006-03-07 22:00:35 +0000 | [diff] [blame] | 587 | |
| 588 | if (!GV->hasAppendingLinkage()) return false; |
| 589 | |
| 590 | assert(GV->hasInitializer() && "Not a special LLVM global!"); |
Chris Lattner | ed13893 | 2005-12-13 06:32:10 +0000 | [diff] [blame] | 591 | |
Evan Cheng | 916d07c | 2007-06-04 20:39:18 +0000 | [diff] [blame] | 592 | const TargetData *TD = TM.getTargetData(); |
| 593 | unsigned Align = Log2_32(TD->getPointerPrefAlignment()); |
Chris Lattner | f231c07 | 2009-03-09 05:52:15 +0000 | [diff] [blame] | 594 | if (GV->getName() == "llvm.global_ctors") { |
Chris Lattner | 6c2f9e1 | 2009-08-19 05:49:37 +0000 | [diff] [blame] | 595 | OutStreamer.SwitchSection(getObjFileLowering().getStaticCtorSection()); |
Chris Lattner | ea3a9ff | 2009-03-09 08:18:48 +0000 | [diff] [blame] | 596 | EmitAlignment(Align, 0); |
| 597 | EmitXXStructorList(GV->getInitializer()); |
Chris Lattner | 71eae71 | 2010-01-19 04:34:02 +0000 | [diff] [blame] | 598 | |
| 599 | if (TM.getRelocationModel() == Reloc::Static && |
| 600 | MAI->hasStaticCtorDtorReferenceInStaticMode()) |
| 601 | O << ".reference .constructors_used\n"; |
Chris Lattner | ea3a9ff | 2009-03-09 08:18:48 +0000 | [diff] [blame] | 602 | return true; |
Chris Lattner | ed13893 | 2005-12-13 06:32:10 +0000 | [diff] [blame] | 603 | } |
| 604 | |
Chris Lattner | f231c07 | 2009-03-09 05:52:15 +0000 | [diff] [blame] | 605 | if (GV->getName() == "llvm.global_dtors") { |
Chris Lattner | 6c2f9e1 | 2009-08-19 05:49:37 +0000 | [diff] [blame] | 606 | OutStreamer.SwitchSection(getObjFileLowering().getStaticDtorSection()); |
Chris Lattner | ea3a9ff | 2009-03-09 08:18:48 +0000 | [diff] [blame] | 607 | EmitAlignment(Align, 0); |
| 608 | EmitXXStructorList(GV->getInitializer()); |
Chris Lattner | 71eae71 | 2010-01-19 04:34:02 +0000 | [diff] [blame] | 609 | |
| 610 | if (TM.getRelocationModel() == Reloc::Static && |
| 611 | MAI->hasStaticCtorDtorReferenceInStaticMode()) |
| 612 | O << ".reference .destructors_used\n"; |
Chris Lattner | ea3a9ff | 2009-03-09 08:18:48 +0000 | [diff] [blame] | 613 | return true; |
Chris Lattner | ed13893 | 2005-12-13 06:32:10 +0000 | [diff] [blame] | 614 | } |
| 615 | |
| 616 | return false; |
| 617 | } |
| 618 | |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 619 | /// EmitLLVMUsedList - For targets that define a MAI::UsedDirective, mark each |
Dale Johannesen | d2e51af | 2008-09-09 22:29:13 +0000 | [diff] [blame] | 620 | /// global in the specified llvm.used list for which emitUsedDirectiveFor |
| 621 | /// is true, as being used with this directive. |
Chris Lattner | cb05af8 | 2006-09-26 03:38:18 +0000 | [diff] [blame] | 622 | void AsmPrinter::EmitLLVMUsedList(Constant *List) { |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 623 | const char *Directive = MAI->getUsedDirective(); |
Chris Lattner | cb05af8 | 2006-09-26 03:38:18 +0000 | [diff] [blame] | 624 | |
Dan Gohman | a119de8 | 2009-06-14 23:30:43 +0000 | [diff] [blame] | 625 | // Should be an array of 'i8*'. |
Chris Lattner | cb05af8 | 2006-09-26 03:38:18 +0000 | [diff] [blame] | 626 | ConstantArray *InitList = dyn_cast<ConstantArray>(List); |
| 627 | if (InitList == 0) return; |
| 628 | |
| 629 | for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) { |
Chris Lattner | 16fe990 | 2009-07-17 22:00:23 +0000 | [diff] [blame] | 630 | const GlobalValue *GV = |
| 631 | dyn_cast<GlobalValue>(InitList->getOperand(i)->stripPointerCasts()); |
Chris Lattner | 26630c1 | 2009-07-31 20:52:39 +0000 | [diff] [blame] | 632 | if (GV && getObjFileLowering().shouldEmitUsedDirectiveFor(GV, Mang)) { |
Dale Johannesen | 61e6093 | 2008-09-03 20:34:58 +0000 | [diff] [blame] | 633 | O << Directive; |
| 634 | EmitConstantValueOnly(InitList->getOperand(i)); |
| 635 | O << '\n'; |
| 636 | } |
Chris Lattner | cb05af8 | 2006-09-26 03:38:18 +0000 | [diff] [blame] | 637 | } |
| 638 | } |
| 639 | |
Chris Lattner | ed13893 | 2005-12-13 06:32:10 +0000 | [diff] [blame] | 640 | /// EmitXXStructorList - Emit the ctor or dtor list. This just prints out the |
| 641 | /// function pointers, ignoring the init priority. |
| 642 | void AsmPrinter::EmitXXStructorList(Constant *List) { |
| 643 | // Should be an array of '{ int, void ()* }' structs. The first value is the |
| 644 | // init priority, which we ignore. |
| 645 | if (!isa<ConstantArray>(List)) return; |
| 646 | ConstantArray *InitList = cast<ConstantArray>(List); |
| 647 | for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) |
| 648 | if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){ |
| 649 | if (CS->getNumOperands() != 2) return; // Not array of 2-element structs. |
Chris Lattner | 8de324b | 2005-12-21 01:17:37 +0000 | [diff] [blame] | 650 | |
| 651 | if (CS->getOperand(1)->isNullValue()) |
| 652 | return; // Found a null terminator, exit printing. |
| 653 | // Emit the function pointer. |
Chris Lattner | ed13893 | 2005-12-13 06:32:10 +0000 | [diff] [blame] | 654 | EmitGlobalConstant(CS->getOperand(1)); |
| 655 | } |
| 656 | } |
Chris Lattner | 3b4fd32 | 2005-11-21 08:25:09 +0000 | [diff] [blame] | 657 | |
Jim Laskey | f1cdea1 | 2007-01-25 15:12:02 +0000 | [diff] [blame] | 658 | //===--------------------------------------------------------------------===// |
| 659 | // Emission and print routines |
| 660 | // |
| 661 | |
Jim Laskey | f1cdea1 | 2007-01-25 15:12:02 +0000 | [diff] [blame] | 662 | /// EmitInt8 - Emit a byte directive and value. |
| 663 | /// |
| 664 | void AsmPrinter::EmitInt8(int Value) const { |
Chris Lattner | 5eaa54e | 2010-01-20 06:45:39 +0000 | [diff] [blame] | 665 | OutStreamer.EmitIntValue(Value, 1, 0/*addrspace*/); |
Jim Laskey | f1cdea1 | 2007-01-25 15:12:02 +0000 | [diff] [blame] | 666 | } |
| 667 | |
| 668 | /// EmitInt16 - Emit a short directive and value. |
| 669 | /// |
| 670 | void AsmPrinter::EmitInt16(int Value) const { |
Chris Lattner | 5eaa54e | 2010-01-20 06:45:39 +0000 | [diff] [blame] | 671 | OutStreamer.EmitIntValue(Value, 2, 0/*addrspace*/); |
Jim Laskey | f1cdea1 | 2007-01-25 15:12:02 +0000 | [diff] [blame] | 672 | } |
| 673 | |
| 674 | /// EmitInt32 - Emit a long directive and value. |
| 675 | /// |
| 676 | void AsmPrinter::EmitInt32(int Value) const { |
Chris Lattner | 5eaa54e | 2010-01-20 06:45:39 +0000 | [diff] [blame] | 677 | OutStreamer.EmitIntValue(Value, 4, 0/*addrspace*/); |
Jim Laskey | f1cdea1 | 2007-01-25 15:12:02 +0000 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | /// EmitInt64 - Emit a long long directive and value. |
| 681 | /// |
| 682 | void AsmPrinter::EmitInt64(uint64_t Value) const { |
Chris Lattner | 5eaa54e | 2010-01-20 06:45:39 +0000 | [diff] [blame] | 683 | OutStreamer.EmitIntValue(Value, 8, 0/*addrspace*/); |
Jim Laskey | f1cdea1 | 2007-01-25 15:12:02 +0000 | [diff] [blame] | 684 | } |
| 685 | |
Chris Lattner | 05f8453 | 2010-01-23 04:54:10 +0000 | [diff] [blame^] | 686 | |
Jim Laskey | f1cdea1 | 2007-01-25 15:12:02 +0000 | [diff] [blame] | 687 | /// toOctal - Convert the low order bits of X into an octal digit. |
| 688 | /// |
| 689 | static inline char toOctal(int X) { |
| 690 | return (X&7)+'0'; |
| 691 | } |
| 692 | |
| 693 | /// printStringChar - Print a char, escaped if necessary. |
| 694 | /// |
David Greene | 7184781 | 2009-07-14 20:18:05 +0000 | [diff] [blame] | 695 | static void printStringChar(formatted_raw_ostream &O, unsigned char C) { |
Jim Laskey | f1cdea1 | 2007-01-25 15:12:02 +0000 | [diff] [blame] | 696 | if (C == '"') { |
| 697 | O << "\\\""; |
| 698 | } else if (C == '\\') { |
| 699 | O << "\\\\"; |
Chris Lattner | bbfa244 | 2009-01-22 23:38:45 +0000 | [diff] [blame] | 700 | } else if (isprint((unsigned char)C)) { |
Jim Laskey | f1cdea1 | 2007-01-25 15:12:02 +0000 | [diff] [blame] | 701 | O << C; |
| 702 | } else { |
| 703 | switch(C) { |
| 704 | case '\b': O << "\\b"; break; |
| 705 | case '\f': O << "\\f"; break; |
| 706 | case '\n': O << "\\n"; break; |
| 707 | case '\r': O << "\\r"; break; |
| 708 | case '\t': O << "\\t"; break; |
| 709 | default: |
| 710 | O << '\\'; |
| 711 | O << toOctal(C >> 6); |
| 712 | O << toOctal(C >> 3); |
| 713 | O << toOctal(C >> 0); |
| 714 | break; |
| 715 | } |
| 716 | } |
| 717 | } |
| 718 | |
Dan Gohman | 189f80d | 2007-09-24 20:58:13 +0000 | [diff] [blame] | 719 | /// EmitFile - Emit a .file directive. |
Benjamin Kramer | 1efd4fd5 | 2010-01-17 07:46:39 +0000 | [diff] [blame] | 720 | void AsmPrinter::EmitFile(unsigned Number, StringRef Name) const { |
Dan Gohman | 189f80d | 2007-09-24 20:58:13 +0000 | [diff] [blame] | 721 | O << "\t.file\t" << Number << " \""; |
Chris Lattner | a118c2e | 2009-04-08 00:28:38 +0000 | [diff] [blame] | 722 | for (unsigned i = 0, N = Name.size(); i < N; ++i) |
| 723 | printStringChar(O, Name[i]); |
Dan Gohman | d19a53b | 2008-06-30 22:03:41 +0000 | [diff] [blame] | 724 | O << '\"'; |
Dan Gohman | 189f80d | 2007-09-24 20:58:13 +0000 | [diff] [blame] | 725 | } |
| 726 | |
| 727 | |
Jim Laskey | f1cdea1 | 2007-01-25 15:12:02 +0000 | [diff] [blame] | 728 | //===----------------------------------------------------------------------===// |
| 729 | |
Chris Lattner | 3a42053 | 2007-05-31 18:57:45 +0000 | [diff] [blame] | 730 | // EmitAlignment - Emit an alignment directive to the specified power of |
| 731 | // two boundary. For example, if you pass in 3 here, you will get an 8 |
| 732 | // byte alignment. If a global value is specified, and if that global has |
| 733 | // an explicit alignment requested, it will unconditionally override the |
| 734 | // alignment request. However, if ForcedAlignBits is specified, this value |
| 735 | // has final say: the ultimate alignment will be the max of ForcedAlignBits |
| 736 | // and the alignment computed with NumBits and the global. |
| 737 | // |
| 738 | // The algorithm is: |
| 739 | // Align = NumBits; |
| 740 | // if (GV && GV->hasalignment) Align = GV->getalignment(); |
| 741 | // Align = std::max(Align, ForcedAlignBits); |
| 742 | // |
| 743 | void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV, |
Evan Cheng | 05548eb | 2008-02-29 19:36:59 +0000 | [diff] [blame] | 744 | unsigned ForcedAlignBits, |
| 745 | bool UseFillExpr) const { |
Dale Johannesen | 00d56b9 | 2007-04-23 23:33:31 +0000 | [diff] [blame] | 746 | if (GV && GV->getAlignment()) |
Chris Lattner | 3a42053 | 2007-05-31 18:57:45 +0000 | [diff] [blame] | 747 | NumBits = Log2_32(GV->getAlignment()); |
| 748 | NumBits = std::max(NumBits, ForcedAlignBits); |
| 749 | |
Chris Lattner | 2a21c6e | 2005-11-10 18:09:27 +0000 | [diff] [blame] | 750 | if (NumBits == 0) return; // No need to emit alignment. |
Chris Lattner | 663c2d2 | 2009-08-19 06:12:02 +0000 | [diff] [blame] | 751 | |
| 752 | unsigned FillValue = 0; |
Chris Lattner | dabf07c | 2009-08-18 06:15:16 +0000 | [diff] [blame] | 753 | if (getCurrentSection()->getKind().isText()) |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 754 | FillValue = MAI->getTextAlignFillValue(); |
Chris Lattner | 663c2d2 | 2009-08-19 06:12:02 +0000 | [diff] [blame] | 755 | |
| 756 | OutStreamer.EmitValueToAlignment(1 << NumBits, FillValue, 1, 0); |
Chris Lattner | bfddc20 | 2004-08-17 19:14:29 +0000 | [diff] [blame] | 757 | } |
David Greene | a5bb59f | 2009-08-05 21:00:52 +0000 | [diff] [blame] | 758 | |
Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 759 | // Print out the specified constant, without a storage class. Only the |
| 760 | // constants valid in constant expressions can occur here. |
Chris Lattner | 25045bd | 2005-11-21 07:51:36 +0000 | [diff] [blame] | 761 | void AsmPrinter::EmitConstantValueOnly(const Constant *CV) { |
Chris Lattner | fe0e7ed | 2010-01-13 04:29:19 +0000 | [diff] [blame] | 762 | if (CV->isNullValue() || isa<UndefValue>(CV)) { |
Dan Gohman | d19a53b | 2008-06-30 22:03:41 +0000 | [diff] [blame] | 763 | O << '0'; |
Chris Lattner | fe0e7ed | 2010-01-13 04:29:19 +0000 | [diff] [blame] | 764 | return; |
| 765 | } |
| 766 | |
| 767 | if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) { |
Scott Michel | 4315eee | 2008-06-03 06:18:19 +0000 | [diff] [blame] | 768 | O << CI->getZExtValue(); |
Chris Lattner | fe0e7ed | 2010-01-13 04:29:19 +0000 | [diff] [blame] | 769 | return; |
| 770 | } |
| 771 | |
| 772 | if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV)) { |
Duraid Madina | 855a519 | 2005-04-02 12:21:51 +0000 | [diff] [blame] | 773 | // This is a constant address for a global variable or function. Use the |
Chris Lattner | bfd1e50 | 2009-09-15 23:11:32 +0000 | [diff] [blame] | 774 | // name of the variable or function as the address value. |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 775 | O << *GetGlobalValueSymbol(GV); |
Chris Lattner | fe0e7ed | 2010-01-13 04:29:19 +0000 | [diff] [blame] | 776 | return; |
| 777 | } |
| 778 | |
| 779 | if (const BlockAddress *BA = dyn_cast<BlockAddress>(CV)) { |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 780 | O << *GetBlockAddressSymbol(BA); |
Chris Lattner | fe0e7ed | 2010-01-13 04:29:19 +0000 | [diff] [blame] | 781 | return; |
| 782 | } |
| 783 | |
| 784 | const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV); |
| 785 | if (CE == 0) { |
Torok Edwin | c23197a | 2009-07-14 16:55:14 +0000 | [diff] [blame] | 786 | llvm_unreachable("Unknown constant value!"); |
Chris Lattner | fe0e7ed | 2010-01-13 04:29:19 +0000 | [diff] [blame] | 787 | O << '0'; |
| 788 | return; |
| 789 | } |
| 790 | |
| 791 | switch (CE->getOpcode()) { |
| 792 | case Instruction::ZExt: |
| 793 | case Instruction::SExt: |
| 794 | case Instruction::FPTrunc: |
| 795 | case Instruction::FPExt: |
| 796 | case Instruction::UIToFP: |
| 797 | case Instruction::SIToFP: |
| 798 | case Instruction::FPToUI: |
| 799 | case Instruction::FPToSI: |
| 800 | default: |
| 801 | llvm_unreachable("FIXME: Don't support this constant cast expr"); |
| 802 | case Instruction::GetElementPtr: { |
| 803 | // generate a symbolic expression for the byte address |
| 804 | const TargetData *TD = TM.getTargetData(); |
| 805 | const Constant *ptrVal = CE->getOperand(0); |
| 806 | SmallVector<Value*, 8> idxVec(CE->op_begin()+1, CE->op_end()); |
| 807 | int64_t Offset = TD->getIndexedOffset(ptrVal->getType(), &idxVec[0], |
| 808 | idxVec.size()); |
| 809 | if (Offset == 0) |
| 810 | return EmitConstantValueOnly(ptrVal); |
| 811 | |
| 812 | // Truncate/sext the offset to the pointer size. |
| 813 | if (TD->getPointerSizeInBits() != 64) { |
| 814 | int SExtAmount = 64-TD->getPointerSizeInBits(); |
| 815 | Offset = (Offset << SExtAmount) >> SExtAmount; |
| 816 | } |
| 817 | |
| 818 | if (Offset) |
| 819 | O << '('; |
| 820 | EmitConstantValueOnly(ptrVal); |
| 821 | if (Offset > 0) |
| 822 | O << ") + " << Offset; |
| 823 | else |
| 824 | O << ") - " << -Offset; |
| 825 | return; |
| 826 | } |
| 827 | case Instruction::BitCast: |
| 828 | return EmitConstantValueOnly(CE->getOperand(0)); |
| 829 | |
| 830 | case Instruction::IntToPtr: { |
| 831 | // Handle casts to pointers by changing them into casts to the appropriate |
| 832 | // integer type. This promotes constant folding and simplifies this code. |
| 833 | const TargetData *TD = TM.getTargetData(); |
| 834 | Constant *Op = CE->getOperand(0); |
| 835 | Op = ConstantExpr::getIntegerCast(Op, TD->getIntPtrType(CV->getContext()), |
| 836 | false/*ZExt*/); |
| 837 | return EmitConstantValueOnly(Op); |
| 838 | } |
| 839 | |
| 840 | case Instruction::PtrToInt: { |
| 841 | // Support only foldable casts to/from pointers that can be eliminated by |
| 842 | // changing the pointer to the appropriately sized integer type. |
| 843 | Constant *Op = CE->getOperand(0); |
| 844 | const Type *Ty = CE->getType(); |
| 845 | const TargetData *TD = TM.getTargetData(); |
| 846 | |
| 847 | // We can emit the pointer value into this slot if the slot is an |
| 848 | // integer slot greater or equal to the size of the pointer. |
| 849 | if (TD->getTypeAllocSize(Ty) == TD->getTypeAllocSize(Op->getType())) |
| 850 | return EmitConstantValueOnly(Op); |
| 851 | |
| 852 | O << "(("; |
| 853 | EmitConstantValueOnly(Op); |
| 854 | APInt ptrMask = |
| 855 | APInt::getAllOnesValue(TD->getTypeAllocSizeInBits(Op->getType())); |
| 856 | |
| 857 | SmallString<40> S; |
| 858 | ptrMask.toStringUnsigned(S); |
| 859 | O << ") & " << S.str() << ')'; |
| 860 | return; |
| 861 | } |
| 862 | |
| 863 | case Instruction::Trunc: |
| 864 | // We emit the value and depend on the assembler to truncate the generated |
| 865 | // expression properly. This is important for differences between |
| 866 | // blockaddress labels. Since the two labels are in the same function, it |
| 867 | // is reasonable to treat their delta as a 32-bit value. |
| 868 | return EmitConstantValueOnly(CE->getOperand(0)); |
| 869 | |
| 870 | case Instruction::Add: |
| 871 | case Instruction::Sub: |
| 872 | case Instruction::And: |
| 873 | case Instruction::Or: |
| 874 | case Instruction::Xor: |
| 875 | O << '('; |
| 876 | EmitConstantValueOnly(CE->getOperand(0)); |
| 877 | O << ')'; |
| 878 | switch (CE->getOpcode()) { |
| 879 | case Instruction::Add: |
| 880 | O << " + "; |
| 881 | break; |
| 882 | case Instruction::Sub: |
| 883 | O << " - "; |
| 884 | break; |
| 885 | case Instruction::And: |
| 886 | O << " & "; |
| 887 | break; |
| 888 | case Instruction::Or: |
| 889 | O << " | "; |
| 890 | break; |
| 891 | case Instruction::Xor: |
| 892 | O << " ^ "; |
| 893 | break; |
| 894 | default: |
| 895 | break; |
| 896 | } |
| 897 | O << '('; |
| 898 | EmitConstantValueOnly(CE->getOperand(1)); |
| 899 | O << ')'; |
| 900 | break; |
Chris Lattner | a80ba71 | 2004-08-16 23:15:22 +0000 | [diff] [blame] | 901 | } |
| 902 | } |
Chris Lattner | 1b7e235 | 2004-08-17 06:36:49 +0000 | [diff] [blame] | 903 | |
Chris Lattner | 91093ec | 2010-01-19 19:10:44 +0000 | [diff] [blame] | 904 | static void EmitGlobalConstantArray(const ConstantArray *CA, unsigned AddrSpace, |
| 905 | AsmPrinter &AP) { |
Chris Lattner | 05f8453 | 2010-01-23 04:54:10 +0000 | [diff] [blame^] | 906 | if (AddrSpace != 0 || !CA->isString()) { |
| 907 | // Not a string. Print the values in successive locations |
Chris Lattner | 91093ec | 2010-01-19 19:10:44 +0000 | [diff] [blame] | 908 | for (unsigned i = 0, e = CA->getNumOperands(); i != e; ++i) |
| 909 | AP.EmitGlobalConstant(CA->getOperand(i), AddrSpace); |
Chris Lattner | 05f8453 | 2010-01-23 04:54:10 +0000 | [diff] [blame^] | 910 | return; |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 911 | } |
Chris Lattner | 05f8453 | 2010-01-23 04:54:10 +0000 | [diff] [blame^] | 912 | |
| 913 | // Otherwise, it can be emitted as .ascii. |
| 914 | SmallVector<char, 128> TmpVec; |
| 915 | TmpVec.reserve(CA->getNumOperands()); |
| 916 | for (unsigned i = 0, e = CA->getNumOperands(); i != e; ++i) |
| 917 | TmpVec.push_back(cast<ConstantInt>(CA->getOperand(i))->getZExtValue()); |
| 918 | |
| 919 | AP.OutStreamer.EmitBytes(StringRef(TmpVec.data(), TmpVec.size()), AddrSpace); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 920 | } |
| 921 | |
Chris Lattner | 91093ec | 2010-01-19 19:10:44 +0000 | [diff] [blame] | 922 | static void EmitGlobalConstantVector(const ConstantVector *CV, |
| 923 | unsigned AddrSpace, AsmPrinter &AP) { |
Chris Lattner | bcb83e5 | 2010-01-20 07:41:15 +0000 | [diff] [blame] | 924 | for (unsigned i = 0, e = CV->getType()->getNumElements(); i != e; ++i) |
Chris Lattner | 91093ec | 2010-01-19 19:10:44 +0000 | [diff] [blame] | 925 | AP.EmitGlobalConstant(CV->getOperand(i), AddrSpace); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 926 | } |
| 927 | |
Chris Lattner | 91093ec | 2010-01-19 19:10:44 +0000 | [diff] [blame] | 928 | static void EmitGlobalConstantStruct(const ConstantStruct *CS, |
| 929 | unsigned AddrSpace, AsmPrinter &AP) { |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 930 | // Print the fields in successive locations. Pad to align if needed! |
Chris Lattner | 91093ec | 2010-01-19 19:10:44 +0000 | [diff] [blame] | 931 | const TargetData *TD = AP.TM.getTargetData(); |
| 932 | unsigned Size = TD->getTypeAllocSize(CS->getType()); |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 933 | const StructLayout *Layout = TD->getStructLayout(CS->getType()); |
Chris Lattner | 91093ec | 2010-01-19 19:10:44 +0000 | [diff] [blame] | 934 | uint64_t SizeSoFar = 0; |
| 935 | for (unsigned i = 0, e = CS->getNumOperands(); i != e; ++i) { |
Chris Lattner | bcb83e5 | 2010-01-20 07:41:15 +0000 | [diff] [blame] | 936 | const Constant *Field = CS->getOperand(i); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 937 | |
| 938 | // Check if padding is needed and insert one or more 0s. |
Chris Lattner | bcb83e5 | 2010-01-20 07:41:15 +0000 | [diff] [blame] | 939 | uint64_t FieldSize = TD->getTypeAllocSize(Field->getType()); |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 940 | uint64_t PadSize = ((i == e-1 ? Size : Layout->getElementOffset(i+1)) |
| 941 | - Layout->getElementOffset(i)) - FieldSize; |
| 942 | SizeSoFar += FieldSize + PadSize; |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 943 | |
| 944 | // Now print the actual field value. |
Chris Lattner | bcb83e5 | 2010-01-20 07:41:15 +0000 | [diff] [blame] | 945 | AP.EmitGlobalConstant(Field, AddrSpace); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 946 | |
| 947 | // Insert padding - this may include padding to increase the size of the |
| 948 | // current field up to the ABI size (if the struct is not packed) as well |
| 949 | // as padding to ensure that the next field starts at the right offset. |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 950 | AP.OutStreamer.EmitZeros(PadSize, AddrSpace); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 951 | } |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 952 | assert(SizeSoFar == Layout->getSizeInBytes() && |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 953 | "Layout of constant struct may be incorrect!"); |
| 954 | } |
| 955 | |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 956 | static void EmitGlobalConstantFP(const ConstantFP *CFP, unsigned AddrSpace, |
| 957 | AsmPrinter &AP) { |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 958 | // FP Constants are printed as integer constants to avoid losing |
Chris Lattner | 9ceff94 | 2010-01-20 06:53:37 +0000 | [diff] [blame] | 959 | // precision. |
Chris Lattner | cf0fe8d | 2009-10-05 05:54:46 +0000 | [diff] [blame] | 960 | if (CFP->getType()->isDoubleTy()) { |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 961 | if (AP.VerboseAsm) { |
Chris Lattner | d79d9dc | 2010-01-22 19:17:48 +0000 | [diff] [blame] | 962 | double Val = CFP->getValueAPF().convertToDouble(); |
| 963 | AP.OutStreamer.GetCommentOS() << "double " << Val << '\n'; |
Chris Lattner | 09ce674 | 2010-01-19 22:16:33 +0000 | [diff] [blame] | 964 | } |
| 965 | |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 966 | uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue(); |
| 967 | AP.OutStreamer.EmitIntValue(Val, 8, AddrSpace); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 968 | return; |
Chris Lattner | cf0fe8d | 2009-10-05 05:54:46 +0000 | [diff] [blame] | 969 | } |
| 970 | |
| 971 | if (CFP->getType()->isFloatTy()) { |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 972 | if (AP.VerboseAsm) { |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 973 | float Val = CFP->getValueAPF().convertToFloat(); |
| 974 | AP.OutStreamer.GetCommentOS() << "float " << Val << '\n'; |
Dan Gohman | a12e9d7 | 2009-08-12 18:32:22 +0000 | [diff] [blame] | 975 | } |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 976 | uint64_t Val = CFP->getValueAPF().bitcastToAPInt().getZExtValue(); |
| 977 | AP.OutStreamer.EmitIntValue(Val, 4, AddrSpace); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 978 | return; |
Chris Lattner | cf0fe8d | 2009-10-05 05:54:46 +0000 | [diff] [blame] | 979 | } |
| 980 | |
| 981 | if (CFP->getType()->isX86_FP80Ty()) { |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 982 | // all long double variants are printed as hex |
| 983 | // api needed to prevent premature destruction |
Chris Lattner | 09ce674 | 2010-01-19 22:16:33 +0000 | [diff] [blame] | 984 | APInt API = CFP->getValueAPF().bitcastToAPInt(); |
| 985 | const uint64_t *p = API.getRawData(); |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 986 | if (AP.VerboseAsm) { |
Chris Lattner | 72b5ebc | 2010-01-19 22:11:05 +0000 | [diff] [blame] | 987 | // Convert to double so we can print the approximate val as a comment. |
| 988 | APFloat DoubleVal = CFP->getValueAPF(); |
| 989 | bool ignored; |
| 990 | DoubleVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven, |
| 991 | &ignored); |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 992 | AP.OutStreamer.GetCommentOS() << "x86_fp80 ~= " |
| 993 | << DoubleVal.convertToDouble() << '\n'; |
Chris Lattner | 72b5ebc | 2010-01-19 22:11:05 +0000 | [diff] [blame] | 994 | } |
| 995 | |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 996 | if (AP.TM.getTargetData()->isBigEndian()) { |
| 997 | AP.OutStreamer.EmitIntValue(p[1], 2, AddrSpace); |
| 998 | AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace); |
Chris Lattner | 72b5ebc | 2010-01-19 22:11:05 +0000 | [diff] [blame] | 999 | } else { |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 1000 | AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace); |
| 1001 | AP.OutStreamer.EmitIntValue(p[1], 2, AddrSpace); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 1002 | } |
Chris Lattner | 9ceff94 | 2010-01-20 06:53:37 +0000 | [diff] [blame] | 1003 | |
| 1004 | // Emit the tail padding for the long double. |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 1005 | const TargetData &TD = *AP.TM.getTargetData(); |
| 1006 | AP.OutStreamer.EmitZeros(TD.getTypeAllocSize(CFP->getType()) - |
| 1007 | TD.getTypeStoreSize(CFP->getType()), AddrSpace); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 1008 | return; |
Chris Lattner | cf0fe8d | 2009-10-05 05:54:46 +0000 | [diff] [blame] | 1009 | } |
| 1010 | |
Chris Lattner | 09ce674 | 2010-01-19 22:16:33 +0000 | [diff] [blame] | 1011 | assert(CFP->getType()->isPPC_FP128Ty() && |
| 1012 | "Floating point constant type not handled"); |
| 1013 | // All long double variants are printed as hex api needed to prevent |
| 1014 | // premature destruction. |
| 1015 | APInt API = CFP->getValueAPF().bitcastToAPInt(); |
| 1016 | const uint64_t *p = API.getRawData(); |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 1017 | if (AP.TM.getTargetData()->isBigEndian()) { |
| 1018 | AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace); |
| 1019 | AP.OutStreamer.EmitIntValue(p[1], 8, AddrSpace); |
Chris Lattner | 9ceff94 | 2010-01-20 06:53:37 +0000 | [diff] [blame] | 1020 | } else { |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 1021 | AP.OutStreamer.EmitIntValue(p[1], 8, AddrSpace); |
| 1022 | AP.OutStreamer.EmitIntValue(p[0], 8, AddrSpace); |
Chris Lattner | 09ce674 | 2010-01-19 22:16:33 +0000 | [diff] [blame] | 1023 | } |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 1024 | } |
| 1025 | |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 1026 | static void EmitGlobalConstantLargeInt(const ConstantInt *CI, |
| 1027 | unsigned AddrSpace, AsmPrinter &AP) { |
| 1028 | const TargetData *TD = AP.TM.getTargetData(); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 1029 | unsigned BitWidth = CI->getBitWidth(); |
Chris Lattner | 38c2b0a | 2010-01-13 04:39:46 +0000 | [diff] [blame] | 1030 | assert((BitWidth & 63) == 0 && "only support multiples of 64-bits"); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 1031 | |
| 1032 | // We don't expect assemblers to support integer data directives |
| 1033 | // for more than 64 bits, so we emit the data in at most 64-bit |
| 1034 | // quantities at a time. |
| 1035 | const uint64_t *RawData = CI->getValue().getRawData(); |
| 1036 | for (unsigned i = 0, e = BitWidth / 64; i != e; ++i) { |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 1037 | uint64_t Val = TD->isBigEndian() ? RawData[e - i - 1] : RawData[i]; |
| 1038 | AP.OutStreamer.EmitIntValue(Val, 8, AddrSpace); |
Dan Gohman | 00d448a | 2008-12-22 21:14:27 +0000 | [diff] [blame] | 1039 | } |
| 1040 | } |
| 1041 | |
Chris Lattner | 25045bd | 2005-11-21 07:51:36 +0000 | [diff] [blame] | 1042 | /// EmitGlobalConstant - Print a general LLVM constant to the .s file. |
Sanjiv Gupta | c8d7bc8 | 2009-01-30 04:25:10 +0000 | [diff] [blame] | 1043 | void AsmPrinter::EmitGlobalConstant(const Constant *CV, unsigned AddrSpace) { |
Chris Lattner | 043c4e5 | 2010-01-20 07:19:19 +0000 | [diff] [blame] | 1044 | if (isa<ConstantAggregateZero>(CV) || isa<UndefValue>(CV)) { |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 1045 | uint64_t Size = TM.getTargetData()->getTypeAllocSize(CV->getType()); |
Chris Lattner | 6449abf | 2010-01-19 21:51:22 +0000 | [diff] [blame] | 1046 | return OutStreamer.EmitZeros(Size, AddrSpace); |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 1047 | } |
| 1048 | |
| 1049 | if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) { |
| 1050 | unsigned Size = TM.getTargetData()->getTypeAllocSize(CV->getType()); |
| 1051 | switch (Size) { |
| 1052 | case 1: |
| 1053 | case 2: |
| 1054 | case 4: |
| 1055 | case 8: |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 1056 | if (VerboseAsm) |
| 1057 | OutStreamer.GetCommentOS() << format("0x%llx\n", CI->getZExtValue()); |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 1058 | OutStreamer.EmitIntValue(CI->getZExtValue(), Size, AddrSpace); |
| 1059 | return; |
| 1060 | default: |
| 1061 | EmitGlobalConstantLargeInt(CI, AddrSpace, *this); |
| 1062 | return; |
| 1063 | } |
| 1064 | } |
Chris Lattner | 3cc3a00 | 2010-01-13 04:34:19 +0000 | [diff] [blame] | 1065 | |
Chris Lattner | 91093ec | 2010-01-19 19:10:44 +0000 | [diff] [blame] | 1066 | if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) |
| 1067 | return EmitGlobalConstantArray(CVA, AddrSpace, *this); |
Chris Lattner | 3cc3a00 | 2010-01-13 04:34:19 +0000 | [diff] [blame] | 1068 | |
Chris Lattner | 91093ec | 2010-01-19 19:10:44 +0000 | [diff] [blame] | 1069 | if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) |
| 1070 | return EmitGlobalConstantStruct(CVS, AddrSpace, *this); |
Chris Lattner | 3cc3a00 | 2010-01-13 04:34:19 +0000 | [diff] [blame] | 1071 | |
Chris Lattner | 91093ec | 2010-01-19 19:10:44 +0000 | [diff] [blame] | 1072 | if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) |
Chris Lattner | 2dd245c | 2010-01-20 07:11:32 +0000 | [diff] [blame] | 1073 | return EmitGlobalConstantFP(CFP, AddrSpace, *this); |
Chris Lattner | 3cc3a00 | 2010-01-13 04:34:19 +0000 | [diff] [blame] | 1074 | |
Chris Lattner | 91093ec | 2010-01-19 19:10:44 +0000 | [diff] [blame] | 1075 | if (const ConstantVector *V = dyn_cast<ConstantVector>(CV)) |
| 1076 | return EmitGlobalConstantVector(V, AddrSpace, *this); |
Chris Lattner | 1b7e235 | 2004-08-17 06:36:49 +0000 | [diff] [blame] | 1077 | |
Chris Lattner | b0bedd6 | 2010-01-20 17:57:50 +0000 | [diff] [blame] | 1078 | if (isa<ConstantPointerNull>(CV)) { |
| 1079 | unsigned Size = TM.getTargetData()->getTypeAllocSize(CV->getType()); |
| 1080 | OutStreamer.EmitIntValue(0, Size, AddrSpace); |
| 1081 | return; |
| 1082 | } |
| 1083 | |
Chris Lattner | ea3cb40 | 2010-01-20 07:33:29 +0000 | [diff] [blame] | 1084 | // Otherwise, it must be a ConstantExpr. Emit the data directive, then emit |
| 1085 | // the expression value. |
| 1086 | switch (TM.getTargetData()->getTypeAllocSize(CV->getType())) { |
| 1087 | case 0: return; |
| 1088 | case 1: O << MAI->getData8bitsDirective(AddrSpace); break; |
| 1089 | case 2: O << MAI->getData16bitsDirective(AddrSpace); break; |
| 1090 | case 4: O << MAI->getData32bitsDirective(AddrSpace); break; |
| 1091 | case 8: |
| 1092 | if (const char *Dir = MAI->getData64bitsDirective(AddrSpace)) { |
| 1093 | O << Dir; |
| 1094 | break; |
| 1095 | } |
| 1096 | // FALL THROUGH. |
| 1097 | default: |
| 1098 | llvm_unreachable("Target cannot handle given data directive width!"); |
| 1099 | return; |
| 1100 | } |
| 1101 | |
Chris Lattner | 25045bd | 2005-11-21 07:51:36 +0000 | [diff] [blame] | 1102 | EmitConstantValueOnly(CV); |
Dan Gohman | d19a53b | 2008-06-30 22:03:41 +0000 | [diff] [blame] | 1103 | O << '\n'; |
Chris Lattner | 1b7e235 | 2004-08-17 06:36:49 +0000 | [diff] [blame] | 1104 | } |
Chris Lattner | 0264d1a | 2006-01-27 02:10:10 +0000 | [diff] [blame] | 1105 | |
Chris Lattner | fad86b0 | 2008-08-17 07:19:36 +0000 | [diff] [blame] | 1106 | void AsmPrinter::EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) { |
Evan Cheng | d6594ae | 2006-09-12 21:00:35 +0000 | [diff] [blame] | 1107 | // Target doesn't support this yet! |
Torok Edwin | c23197a | 2009-07-14 16:55:14 +0000 | [diff] [blame] | 1108 | llvm_unreachable("Target does not support EmitMachineConstantPoolValue"); |
Evan Cheng | d6594ae | 2006-09-12 21:00:35 +0000 | [diff] [blame] | 1109 | } |
| 1110 | |
Chris Lattner | 3ce9b67 | 2006-09-26 23:59:50 +0000 | [diff] [blame] | 1111 | /// PrintSpecial - Print information related to the specified machine instr |
| 1112 | /// that is independent of the operand, and may be independent of the instr |
| 1113 | /// itself. This can be useful for portably encoding the comment character |
| 1114 | /// or other bits of target-specific knowledge into the asmstrings. The |
| 1115 | /// syntax used is ${:comment}. Targets can override this to add support |
| 1116 | /// for their own strange codes. |
Chris Lattner | 3e0cc26 | 2009-03-10 05:37:13 +0000 | [diff] [blame] | 1117 | void AsmPrinter::PrintSpecial(const MachineInstr *MI, const char *Code) const { |
Chris Lattner | bae02cf | 2006-09-27 00:06:07 +0000 | [diff] [blame] | 1118 | if (!strcmp(Code, "private")) { |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 1119 | O << MAI->getPrivateGlobalPrefix(); |
Chris Lattner | bae02cf | 2006-09-27 00:06:07 +0000 | [diff] [blame] | 1120 | } else if (!strcmp(Code, "comment")) { |
Evan Cheng | f1c0ae9 | 2009-03-24 00:17:40 +0000 | [diff] [blame] | 1121 | if (VerboseAsm) |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 1122 | O << MAI->getCommentString(); |
Chris Lattner | 3ce9b67 | 2006-09-26 23:59:50 +0000 | [diff] [blame] | 1123 | } else if (!strcmp(Code, "uid")) { |
Chris Lattner | b6a24bf | 2007-02-05 21:23:52 +0000 | [diff] [blame] | 1124 | // Comparing the address of MI isn't sufficient, because machineinstrs may |
| 1125 | // be allocated to the same address across functions. |
| 1126 | const Function *ThisF = MI->getParent()->getParent()->getFunction(); |
| 1127 | |
Owen Anderson | bd58edf | 2009-06-24 22:28:12 +0000 | [diff] [blame] | 1128 | // If this is a new LastFn instruction, bump the counter. |
| 1129 | if (LastMI != MI || LastFn != ThisF) { |
Chris Lattner | b6a24bf | 2007-02-05 21:23:52 +0000 | [diff] [blame] | 1130 | ++Counter; |
| 1131 | LastMI = MI; |
Owen Anderson | bd58edf | 2009-06-24 22:28:12 +0000 | [diff] [blame] | 1132 | LastFn = ThisF; |
Chris Lattner | b6a24bf | 2007-02-05 21:23:52 +0000 | [diff] [blame] | 1133 | } |
Chris Lattner | 3ce9b67 | 2006-09-26 23:59:50 +0000 | [diff] [blame] | 1134 | O << Counter; |
| 1135 | } else { |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 1136 | std::string msg; |
| 1137 | raw_string_ostream Msg(msg); |
| 1138 | Msg << "Unknown special formatter '" << Code |
Bill Wendling | e815619 | 2006-12-07 01:30:32 +0000 | [diff] [blame] | 1139 | << "' for machine instr: " << *MI; |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 1140 | llvm_report_error(Msg.str()); |
Chris Lattner | 3ce9b67 | 2006-09-26 23:59:50 +0000 | [diff] [blame] | 1141 | } |
| 1142 | } |
| 1143 | |
Argyrios Kyrtzidis | cd76240 | 2009-05-07 13:55:51 +0000 | [diff] [blame] | 1144 | /// processDebugLoc - Processes the debug information of each machine |
| 1145 | /// instruction's DebugLoc. |
Devang Patel | af0e272 | 2009-10-06 02:19:11 +0000 | [diff] [blame] | 1146 | void AsmPrinter::processDebugLoc(const MachineInstr *MI, |
| 1147 | bool BeforePrintingInsn) { |
Devang Patel | 53bb5c9 | 2009-11-10 23:06:00 +0000 | [diff] [blame] | 1148 | if (!MAI || !DW || !MAI->doesSupportDebugInformation() |
| 1149 | || !DW->ShouldEmitDwarfDebug()) |
Chris Lattner | d250329 | 2009-08-05 04:09:18 +0000 | [diff] [blame] | 1150 | return; |
Devang Patel | b0fdedb | 2009-09-30 23:12:50 +0000 | [diff] [blame] | 1151 | DebugLoc DL = MI->getDebugLoc(); |
Devang Patel | 53bb5c9 | 2009-11-10 23:06:00 +0000 | [diff] [blame] | 1152 | if (DL.isUnknown()) |
| 1153 | return; |
Devang Patel | 6b61f58 | 2010-01-16 06:09:35 +0000 | [diff] [blame] | 1154 | DILocation CurDLT = MF->getDILocation(DL); |
| 1155 | if (CurDLT.getScope().isNull()) |
Devang Patel | 53bb5c9 | 2009-11-10 23:06:00 +0000 | [diff] [blame] | 1156 | return; |
| 1157 | |
Chris Lattner | 043c4e5 | 2010-01-20 07:19:19 +0000 | [diff] [blame] | 1158 | if (!BeforePrintingInsn) { |
Devang Patel | 53bb5c9 | 2009-11-10 23:06:00 +0000 | [diff] [blame] | 1159 | // After printing instruction |
| 1160 | DW->EndScope(MI); |
Chris Lattner | 043c4e5 | 2010-01-20 07:19:19 +0000 | [diff] [blame] | 1161 | } else if (CurDLT.getNode() != PrevDLT) { |
| 1162 | unsigned L = DW->RecordSourceLine(CurDLT.getLineNumber(), |
| 1163 | CurDLT.getColumnNumber(), |
| 1164 | CurDLT.getScope().getNode()); |
| 1165 | printLabel(L); |
| 1166 | O << '\n'; |
| 1167 | DW->BeginScope(MI, L); |
| 1168 | PrevDLT = CurDLT.getNode(); |
Argyrios Kyrtzidis | cd76240 | 2009-05-07 13:55:51 +0000 | [diff] [blame] | 1169 | } |
| 1170 | } |
Chris Lattner | 3ce9b67 | 2006-09-26 23:59:50 +0000 | [diff] [blame] | 1171 | |
Devang Patel | 53bb5c9 | 2009-11-10 23:06:00 +0000 | [diff] [blame] | 1172 | |
Chris Lattner | 0264d1a | 2006-01-27 02:10:10 +0000 | [diff] [blame] | 1173 | /// printInlineAsm - This method formats and prints the specified machine |
| 1174 | /// instruction that is an inline asm. |
| 1175 | void AsmPrinter::printInlineAsm(const MachineInstr *MI) const { |
Chris Lattner | f2b67cf | 2006-01-30 23:00:08 +0000 | [diff] [blame] | 1176 | unsigned NumOperands = MI->getNumOperands(); |
| 1177 | |
| 1178 | // Count the number of register definitions. |
| 1179 | unsigned NumDefs = 0; |
Dan Gohman | d735b80 | 2008-10-03 15:45:36 +0000 | [diff] [blame] | 1180 | for (; MI->getOperand(NumDefs).isReg() && MI->getOperand(NumDefs).isDef(); |
Chris Lattner | 67942f5 | 2006-09-05 20:02:51 +0000 | [diff] [blame] | 1181 | ++NumDefs) |
Chris Lattner | f2b67cf | 2006-01-30 23:00:08 +0000 | [diff] [blame] | 1182 | assert(NumDefs != NumOperands-1 && "No asm string?"); |
| 1183 | |
Dan Gohman | d735b80 | 2008-10-03 15:45:36 +0000 | [diff] [blame] | 1184 | assert(MI->getOperand(NumDefs).isSymbol() && "No asm string?"); |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1185 | |
| 1186 | // Disassemble the AsmStr, printing out the literal pieces, the operands, etc. |
Chris Lattner | f2b67cf | 2006-01-30 23:00:08 +0000 | [diff] [blame] | 1187 | const char *AsmStr = MI->getOperand(NumDefs).getSymbolName(); |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1188 | |
Dan Gohman | 40c5786 | 2009-11-06 00:04:54 +0000 | [diff] [blame] | 1189 | O << '\t'; |
| 1190 | |
Dale Johannesen | ba2a0b9 | 2008-01-29 02:21:21 +0000 | [diff] [blame] | 1191 | // If this asmstr is empty, just print the #APP/#NOAPP markers. |
| 1192 | // These are useful to see where empty asm's wound up. |
Chris Lattner | f26f5dd | 2006-07-28 00:17:20 +0000 | [diff] [blame] | 1193 | if (AsmStr[0] == 0) { |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 1194 | O << MAI->getCommentString() << MAI->getInlineAsmStart() << "\n\t"; |
| 1195 | O << MAI->getCommentString() << MAI->getInlineAsmEnd() << '\n'; |
Chris Lattner | f26f5dd | 2006-07-28 00:17:20 +0000 | [diff] [blame] | 1196 | return; |
| 1197 | } |
| 1198 | |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 1199 | O << MAI->getCommentString() << MAI->getInlineAsmStart() << "\n\t"; |
Chris Lattner | f26f5dd | 2006-07-28 00:17:20 +0000 | [diff] [blame] | 1200 | |
Bill Wendling | eb9a42c | 2007-01-16 03:42:04 +0000 | [diff] [blame] | 1201 | // The variant of the current asmprinter. |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 1202 | int AsmPrinterVariant = MAI->getAssemblerDialect(); |
Bill Wendling | eb9a42c | 2007-01-16 03:42:04 +0000 | [diff] [blame] | 1203 | |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1204 | int CurVariant = -1; // The number of the {.|.|.} region we are in. |
| 1205 | const char *LastEmitted = AsmStr; // One past the last character emitted. |
Chris Lattner | 2cc2f66 | 2006-02-01 01:28:23 +0000 | [diff] [blame] | 1206 | |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1207 | while (*LastEmitted) { |
| 1208 | switch (*LastEmitted) { |
| 1209 | default: { |
| 1210 | // Not a special case, emit the string section literally. |
| 1211 | const char *LiteralEnd = LastEmitted+1; |
| 1212 | while (*LiteralEnd && *LiteralEnd != '{' && *LiteralEnd != '|' && |
Chris Lattner | 1c05997 | 2006-05-05 21:47:05 +0000 | [diff] [blame] | 1213 | *LiteralEnd != '}' && *LiteralEnd != '$' && *LiteralEnd != '\n') |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1214 | ++LiteralEnd; |
| 1215 | if (CurVariant == -1 || CurVariant == AsmPrinterVariant) |
| 1216 | O.write(LastEmitted, LiteralEnd-LastEmitted); |
| 1217 | LastEmitted = LiteralEnd; |
| 1218 | break; |
| 1219 | } |
Chris Lattner | 1c05997 | 2006-05-05 21:47:05 +0000 | [diff] [blame] | 1220 | case '\n': |
| 1221 | ++LastEmitted; // Consume newline character. |
Dan Gohman | d19a53b | 2008-06-30 22:03:41 +0000 | [diff] [blame] | 1222 | O << '\n'; // Indent code with newline. |
Chris Lattner | 1c05997 | 2006-05-05 21:47:05 +0000 | [diff] [blame] | 1223 | break; |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1224 | case '$': { |
| 1225 | ++LastEmitted; // Consume '$' character. |
Chris Lattner | faf1dae | 2006-10-03 23:27:09 +0000 | [diff] [blame] | 1226 | bool Done = true; |
| 1227 | |
| 1228 | // Handle escapes. |
| 1229 | switch (*LastEmitted) { |
| 1230 | default: Done = false; break; |
| 1231 | case '$': // $$ -> $ |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1232 | if (CurVariant == -1 || CurVariant == AsmPrinterVariant) |
| 1233 | O << '$'; |
| 1234 | ++LastEmitted; // Consume second '$' character. |
| 1235 | break; |
Chris Lattner | faf1dae | 2006-10-03 23:27:09 +0000 | [diff] [blame] | 1236 | case '(': // $( -> same as GCC's { character. |
| 1237 | ++LastEmitted; // Consume '(' character. |
| 1238 | if (CurVariant != -1) { |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 1239 | llvm_report_error("Nested variants found in inline asm string: '" |
| 1240 | + std::string(AsmStr) + "'"); |
Chris Lattner | faf1dae | 2006-10-03 23:27:09 +0000 | [diff] [blame] | 1241 | } |
| 1242 | CurVariant = 0; // We're in the first variant now. |
| 1243 | break; |
| 1244 | case '|': |
| 1245 | ++LastEmitted; // consume '|' character. |
Dale Johannesen | 8b1e054 | 2008-10-10 21:04:42 +0000 | [diff] [blame] | 1246 | if (CurVariant == -1) |
| 1247 | O << '|'; // this is gcc's behavior for | outside a variant |
| 1248 | else |
| 1249 | ++CurVariant; // We're in the next variant. |
Chris Lattner | faf1dae | 2006-10-03 23:27:09 +0000 | [diff] [blame] | 1250 | break; |
| 1251 | case ')': // $) -> same as GCC's } char. |
| 1252 | ++LastEmitted; // consume ')' character. |
Dale Johannesen | 8b1e054 | 2008-10-10 21:04:42 +0000 | [diff] [blame] | 1253 | if (CurVariant == -1) |
| 1254 | O << '}'; // this is gcc's behavior for } outside a variant |
| 1255 | else |
| 1256 | CurVariant = -1; |
Chris Lattner | faf1dae | 2006-10-03 23:27:09 +0000 | [diff] [blame] | 1257 | break; |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1258 | } |
Chris Lattner | faf1dae | 2006-10-03 23:27:09 +0000 | [diff] [blame] | 1259 | if (Done) break; |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1260 | |
| 1261 | bool HasCurlyBraces = false; |
| 1262 | if (*LastEmitted == '{') { // ${variable} |
| 1263 | ++LastEmitted; // Consume '{' character. |
| 1264 | HasCurlyBraces = true; |
| 1265 | } |
| 1266 | |
Chris Lattner | 3e0cc26 | 2009-03-10 05:37:13 +0000 | [diff] [blame] | 1267 | // If we have ${:foo}, then this is not a real operand reference, it is a |
| 1268 | // "magic" string reference, just like in .td files. Arrange to call |
| 1269 | // PrintSpecial. |
| 1270 | if (HasCurlyBraces && *LastEmitted == ':') { |
| 1271 | ++LastEmitted; |
| 1272 | const char *StrStart = LastEmitted; |
| 1273 | const char *StrEnd = strchr(StrStart, '}'); |
| 1274 | if (StrEnd == 0) { |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 1275 | llvm_report_error("Unterminated ${:foo} operand in inline asm string: '" |
| 1276 | + std::string(AsmStr) + "'"); |
Chris Lattner | 3e0cc26 | 2009-03-10 05:37:13 +0000 | [diff] [blame] | 1277 | } |
| 1278 | |
| 1279 | std::string Val(StrStart, StrEnd); |
| 1280 | PrintSpecial(MI, Val.c_str()); |
| 1281 | LastEmitted = StrEnd+1; |
| 1282 | break; |
| 1283 | } |
| 1284 | |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1285 | const char *IDStart = LastEmitted; |
| 1286 | char *IDEnd; |
Chris Lattner | fad2912 | 2007-01-23 00:36:17 +0000 | [diff] [blame] | 1287 | errno = 0; |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1288 | long Val = strtol(IDStart, &IDEnd, 10); // We only accept numbers for IDs. |
| 1289 | if (!isdigit(*IDStart) || (Val == 0 && errno == EINVAL)) { |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 1290 | llvm_report_error("Bad $ operand number in inline asm string: '" |
| 1291 | + std::string(AsmStr) + "'"); |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1292 | } |
| 1293 | LastEmitted = IDEnd; |
| 1294 | |
Chris Lattner | a36cb0a | 2006-02-06 22:17:23 +0000 | [diff] [blame] | 1295 | char Modifier[2] = { 0, 0 }; |
| 1296 | |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1297 | if (HasCurlyBraces) { |
Chris Lattner | a36cb0a | 2006-02-06 22:17:23 +0000 | [diff] [blame] | 1298 | // If we have curly braces, check for a modifier character. This |
| 1299 | // supports syntax like ${0:u}, which correspond to "%u0" in GCC asm. |
| 1300 | if (*LastEmitted == ':') { |
| 1301 | ++LastEmitted; // Consume ':' character. |
| 1302 | if (*LastEmitted == 0) { |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 1303 | llvm_report_error("Bad ${:} expression in inline asm string: '" |
| 1304 | + std::string(AsmStr) + "'"); |
Chris Lattner | a36cb0a | 2006-02-06 22:17:23 +0000 | [diff] [blame] | 1305 | } |
| 1306 | |
| 1307 | Modifier[0] = *LastEmitted; |
| 1308 | ++LastEmitted; // Consume modifier character. |
| 1309 | } |
| 1310 | |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1311 | if (*LastEmitted != '}') { |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 1312 | llvm_report_error("Bad ${} expression in inline asm string: '" |
| 1313 | + std::string(AsmStr) + "'"); |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1314 | } |
| 1315 | ++LastEmitted; // Consume '}' character. |
| 1316 | } |
| 1317 | |
| 1318 | if ((unsigned)Val >= NumOperands-1) { |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 1319 | llvm_report_error("Invalid $ operand number in inline asm string: '" |
| 1320 | + std::string(AsmStr) + "'"); |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1321 | } |
| 1322 | |
Chris Lattner | c3a9f8d | 2006-02-23 19:21:04 +0000 | [diff] [blame] | 1323 | // Okay, we finally have a value number. Ask the target to print this |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1324 | // operand! |
Chris Lattner | c3a9f8d | 2006-02-23 19:21:04 +0000 | [diff] [blame] | 1325 | if (CurVariant == -1 || CurVariant == AsmPrinterVariant) { |
| 1326 | unsigned OpNo = 1; |
Chris Lattner | fd561cd | 2006-06-08 18:00:47 +0000 | [diff] [blame] | 1327 | |
| 1328 | bool Error = false; |
| 1329 | |
Chris Lattner | c3a9f8d | 2006-02-23 19:21:04 +0000 | [diff] [blame] | 1330 | // Scan to find the machine operand number for the operand. |
Chris Lattner | daf6bc6 | 2006-02-24 19:50:58 +0000 | [diff] [blame] | 1331 | for (; Val; --Val) { |
Chris Lattner | fd561cd | 2006-06-08 18:00:47 +0000 | [diff] [blame] | 1332 | if (OpNo >= MI->getNumOperands()) break; |
Chris Lattner | 9e33049 | 2007-12-30 20:50:28 +0000 | [diff] [blame] | 1333 | unsigned OpFlags = MI->getOperand(OpNo).getImm(); |
Evan Cheng | 697cbbf | 2009-03-20 18:03:34 +0000 | [diff] [blame] | 1334 | OpNo += InlineAsm::getNumOperandRegisters(OpFlags) + 1; |
Chris Lattner | daf6bc6 | 2006-02-24 19:50:58 +0000 | [diff] [blame] | 1335 | } |
Chris Lattner | dd26033 | 2006-02-24 20:21:58 +0000 | [diff] [blame] | 1336 | |
Chris Lattner | fd561cd | 2006-06-08 18:00:47 +0000 | [diff] [blame] | 1337 | if (OpNo >= MI->getNumOperands()) { |
| 1338 | Error = true; |
Chris Lattner | dd26033 | 2006-02-24 20:21:58 +0000 | [diff] [blame] | 1339 | } else { |
Chris Lattner | 9e33049 | 2007-12-30 20:50:28 +0000 | [diff] [blame] | 1340 | unsigned OpFlags = MI->getOperand(OpNo).getImm(); |
Chris Lattner | fd561cd | 2006-06-08 18:00:47 +0000 | [diff] [blame] | 1341 | ++OpNo; // Skip over the ID number. |
| 1342 | |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 1343 | if (Modifier[0] == 'l') // labels are target independent |
| 1344 | O << *GetMBBSymbol(MI->getOperand(OpNo).getMBB()->getNumber()); |
Dale Johannesen | eb57ea7 | 2007-11-05 21:20:28 +0000 | [diff] [blame] | 1345 | else { |
| 1346 | AsmPrinter *AP = const_cast<AsmPrinter*>(this); |
Dale Johannesen | 86b49f8 | 2008-09-24 01:07:17 +0000 | [diff] [blame] | 1347 | if ((OpFlags & 7) == 4) { |
Dale Johannesen | eb57ea7 | 2007-11-05 21:20:28 +0000 | [diff] [blame] | 1348 | Error = AP->PrintAsmMemoryOperand(MI, OpNo, AsmPrinterVariant, |
| 1349 | Modifier[0] ? Modifier : 0); |
| 1350 | } else { |
| 1351 | Error = AP->PrintAsmOperand(MI, OpNo, AsmPrinterVariant, |
| 1352 | Modifier[0] ? Modifier : 0); |
| 1353 | } |
Chris Lattner | fd561cd | 2006-06-08 18:00:47 +0000 | [diff] [blame] | 1354 | } |
Chris Lattner | dd26033 | 2006-02-24 20:21:58 +0000 | [diff] [blame] | 1355 | } |
| 1356 | if (Error) { |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 1357 | std::string msg; |
| 1358 | raw_string_ostream Msg(msg); |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 1359 | Msg << "Invalid operand found in inline asm: '" << AsmStr << "'\n"; |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 1360 | MI->print(Msg); |
| 1361 | llvm_report_error(Msg.str()); |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1362 | } |
Chris Lattner | c3a9f8d | 2006-02-23 19:21:04 +0000 | [diff] [blame] | 1363 | } |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1364 | break; |
| 1365 | } |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1366 | } |
| 1367 | } |
Chris Lattner | c5ea263 | 2009-09-09 23:14:36 +0000 | [diff] [blame] | 1368 | O << "\n\t" << MAI->getCommentString() << MAI->getInlineAsmEnd(); |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1369 | } |
| 1370 | |
Evan Cheng | da47e6e | 2008-03-15 00:03:38 +0000 | [diff] [blame] | 1371 | /// printImplicitDef - This method prints the specified machine instruction |
| 1372 | /// that is an implicit def. |
| 1373 | void AsmPrinter::printImplicitDef(const MachineInstr *MI) const { |
Chris Lattner | c5ea263 | 2009-09-09 23:14:36 +0000 | [diff] [blame] | 1374 | if (!VerboseAsm) return; |
| 1375 | O.PadToColumn(MAI->getCommentColumn()); |
| 1376 | O << MAI->getCommentString() << " implicit-def: " |
Chris Lattner | f806c23 | 2009-09-13 19:48:37 +0000 | [diff] [blame] | 1377 | << TRI->getName(MI->getOperand(0).getReg()); |
Evan Cheng | da47e6e | 2008-03-15 00:03:38 +0000 | [diff] [blame] | 1378 | } |
| 1379 | |
Jakob Stoklund Olesen | ad68264 | 2009-11-04 19:24:37 +0000 | [diff] [blame] | 1380 | void AsmPrinter::printKill(const MachineInstr *MI) const { |
| 1381 | if (!VerboseAsm) return; |
| 1382 | O.PadToColumn(MAI->getCommentColumn()); |
| 1383 | O << MAI->getCommentString() << " kill:"; |
| 1384 | for (unsigned n = 0, e = MI->getNumOperands(); n != e; ++n) { |
| 1385 | const MachineOperand &op = MI->getOperand(n); |
| 1386 | assert(op.isReg() && "KILL instruction must have only register operands"); |
| 1387 | O << ' ' << TRI->getName(op.getReg()) << (op.isDef() ? "<def>" : "<kill>"); |
| 1388 | } |
| 1389 | } |
| 1390 | |
Jim Laskey | 1ee2925 | 2007-01-26 14:34:52 +0000 | [diff] [blame] | 1391 | /// printLabel - This method prints a local label used by debug and |
| 1392 | /// exception handling tables. |
| 1393 | void AsmPrinter::printLabel(const MachineInstr *MI) const { |
Dan Gohman | 528bc02 | 2008-07-01 00:16:26 +0000 | [diff] [blame] | 1394 | printLabel(MI->getOperand(0).getImm()); |
Jim Laskey | 1ee2925 | 2007-01-26 14:34:52 +0000 | [diff] [blame] | 1395 | } |
| 1396 | |
Evan Cheng | 1b08bbc | 2008-02-01 09:10:45 +0000 | [diff] [blame] | 1397 | void AsmPrinter::printLabel(unsigned Id) const { |
Chris Lattner | c5ea263 | 2009-09-09 23:14:36 +0000 | [diff] [blame] | 1398 | O << MAI->getPrivateGlobalPrefix() << "label" << Id << ':'; |
Evan Cheng | 1b08bbc | 2008-02-01 09:10:45 +0000 | [diff] [blame] | 1399 | } |
| 1400 | |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1401 | /// PrintAsmOperand - Print the specified operand of MI, an INLINEASM |
| 1402 | /// instruction, using the specified assembler variant. Targets should |
Dale Johannesen | cf0b766 | 2010-01-14 21:50:17 +0000 | [diff] [blame] | 1403 | /// override this to format as appropriate. |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1404 | bool AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo, |
Chris Lattner | a36cb0a | 2006-02-06 22:17:23 +0000 | [diff] [blame] | 1405 | unsigned AsmVariant, const char *ExtraCode) { |
Chris Lattner | 6609913 | 2006-02-01 22:41:11 +0000 | [diff] [blame] | 1406 | // Target doesn't support this yet! |
| 1407 | return true; |
Chris Lattner | 0264d1a | 2006-01-27 02:10:10 +0000 | [diff] [blame] | 1408 | } |
Chris Lattner | dd26033 | 2006-02-24 20:21:58 +0000 | [diff] [blame] | 1409 | |
| 1410 | bool AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo, |
| 1411 | unsigned AsmVariant, |
| 1412 | const char *ExtraCode) { |
| 1413 | // Target doesn't support this yet! |
| 1414 | return true; |
| 1415 | } |
Nate Begeman | 37efe67 | 2006-04-22 18:53:45 +0000 | [diff] [blame] | 1416 | |
Dan Gohman | 29cbade | 2009-11-20 23:18:13 +0000 | [diff] [blame] | 1417 | MCSymbol *AsmPrinter::GetBlockAddressSymbol(const BlockAddress *BA, |
| 1418 | const char *Suffix) const { |
| 1419 | return GetBlockAddressSymbol(BA->getFunction(), BA->getBasicBlock(), Suffix); |
Dan Gohman | 8c2b525 | 2009-10-30 01:27:03 +0000 | [diff] [blame] | 1420 | } |
| 1421 | |
| 1422 | MCSymbol *AsmPrinter::GetBlockAddressSymbol(const Function *F, |
Dan Gohman | 29cbade | 2009-11-20 23:18:13 +0000 | [diff] [blame] | 1423 | const BasicBlock *BB, |
| 1424 | const char *Suffix) const { |
Dan Gohman | 8c2b525 | 2009-10-30 01:27:03 +0000 | [diff] [blame] | 1425 | assert(BB->hasName() && |
| 1426 | "Address of anonymous basic block not supported yet!"); |
| 1427 | |
Dan Gohman | 568a3be | 2009-11-05 23:14:35 +0000 | [diff] [blame] | 1428 | // This code must use the function name itself, and not the function number, |
| 1429 | // since it must be possible to generate the label name from within other |
| 1430 | // functions. |
Chris Lattner | 2f8cc26 | 2010-01-13 07:30:49 +0000 | [diff] [blame] | 1431 | SmallString<60> FnName; |
| 1432 | Mang->getNameWithPrefix(FnName, F, false); |
Dan Gohman | 8c2b525 | 2009-10-30 01:27:03 +0000 | [diff] [blame] | 1433 | |
Chris Lattner | 2f8cc26 | 2010-01-13 07:30:49 +0000 | [diff] [blame] | 1434 | // FIXME: THIS IS BROKEN IF THE LLVM BASIC BLOCK DOESN'T HAVE A NAME! |
Chris Lattner | 4813035 | 2010-01-13 06:38:18 +0000 | [diff] [blame] | 1435 | SmallString<60> NameResult; |
Chris Lattner | 2f8cc26 | 2010-01-13 07:30:49 +0000 | [diff] [blame] | 1436 | Mang->getNameWithPrefix(NameResult, |
| 1437 | StringRef("BA") + Twine((unsigned)FnName.size()) + |
| 1438 | "_" + FnName.str() + "_" + BB->getName() + Suffix, |
| 1439 | Mangler::Private); |
Dan Gohman | 568a3be | 2009-11-05 23:14:35 +0000 | [diff] [blame] | 1440 | |
Chris Lattner | 4813035 | 2010-01-13 06:38:18 +0000 | [diff] [blame] | 1441 | return OutContext.GetOrCreateSymbol(NameResult.str()); |
Dan Gohman | 8c2b525 | 2009-10-30 01:27:03 +0000 | [diff] [blame] | 1442 | } |
| 1443 | |
Chris Lattner | 7cb384d | 2009-09-12 23:02:08 +0000 | [diff] [blame] | 1444 | MCSymbol *AsmPrinter::GetMBBSymbol(unsigned MBBID) const { |
| 1445 | SmallString<60> Name; |
| 1446 | raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << "BB" |
| 1447 | << getFunctionNumber() << '_' << MBBID; |
| 1448 | |
| 1449 | return OutContext.GetOrCreateSymbol(Name.str()); |
| 1450 | } |
| 1451 | |
Chris Lattner | 6b04ede | 2010-01-15 23:18:17 +0000 | [diff] [blame] | 1452 | /// GetGlobalValueSymbol - Return the MCSymbol for the specified global |
| 1453 | /// value. |
| 1454 | MCSymbol *AsmPrinter::GetGlobalValueSymbol(const GlobalValue *GV) const { |
| 1455 | SmallString<60> NameStr; |
| 1456 | Mang->getNameWithPrefix(NameStr, GV, false); |
| 1457 | return OutContext.GetOrCreateSymbol(NameStr.str()); |
| 1458 | } |
| 1459 | |
Chris Lattner | 7a2ba94 | 2010-01-16 18:37:32 +0000 | [diff] [blame] | 1460 | /// GetSymbolWithGlobalValueBase - Return the MCSymbol for a symbol with |
Chris Lattner | d588b97 | 2010-01-15 23:25:11 +0000 | [diff] [blame] | 1461 | /// global value name as its base, with the specified suffix, and where the |
Chris Lattner | 7a2ba94 | 2010-01-16 18:37:32 +0000 | [diff] [blame] | 1462 | /// symbol is forced to have private linkage if ForcePrivate is true. |
| 1463 | MCSymbol *AsmPrinter::GetSymbolWithGlobalValueBase(const GlobalValue *GV, |
| 1464 | StringRef Suffix, |
| 1465 | bool ForcePrivate) const { |
Chris Lattner | d588b97 | 2010-01-15 23:25:11 +0000 | [diff] [blame] | 1466 | SmallString<60> NameStr; |
Chris Lattner | 7a2ba94 | 2010-01-16 18:37:32 +0000 | [diff] [blame] | 1467 | Mang->getNameWithPrefix(NameStr, GV, ForcePrivate); |
Chris Lattner | d588b97 | 2010-01-15 23:25:11 +0000 | [diff] [blame] | 1468 | NameStr.append(Suffix.begin(), Suffix.end()); |
| 1469 | return OutContext.GetOrCreateSymbol(NameStr.str()); |
| 1470 | } |
| 1471 | |
Chris Lattner | 6b04ede | 2010-01-15 23:18:17 +0000 | [diff] [blame] | 1472 | /// GetExternalSymbolSymbol - Return the MCSymbol for the specified |
| 1473 | /// ExternalSymbol. |
| 1474 | MCSymbol *AsmPrinter::GetExternalSymbolSymbol(StringRef Sym) const { |
| 1475 | SmallString<60> NameStr; |
| 1476 | Mang->getNameWithPrefix(NameStr, Sym); |
| 1477 | return OutContext.GetOrCreateSymbol(NameStr.str()); |
| 1478 | } |
| 1479 | |
Chris Lattner | 7cb384d | 2009-09-12 23:02:08 +0000 | [diff] [blame] | 1480 | |
Chris Lattner | 523a508 | 2010-01-22 21:50:41 +0000 | [diff] [blame] | 1481 | |
| 1482 | /// PrintParentLoopComment - Print comments about parent loops of this one. |
| 1483 | static void PrintParentLoopComment(raw_ostream &OS, const MachineLoop *Loop, |
| 1484 | unsigned FunctionNumber) { |
| 1485 | if (Loop == 0) return; |
| 1486 | PrintParentLoopComment(OS, Loop->getParentLoop(), FunctionNumber); |
| 1487 | OS.indent(Loop->getLoopDepth()*2) |
| 1488 | << "Parent Loop BB" << FunctionNumber << "_" |
| 1489 | << Loop->getHeader()->getNumber() |
| 1490 | << " Depth=" << Loop->getLoopDepth() << '\n'; |
| 1491 | } |
| 1492 | |
| 1493 | |
| 1494 | /// PrintChildLoopComment - Print comments about child loops within |
| 1495 | /// the loop for this basic block, with nesting. |
| 1496 | static void PrintChildLoopComment(raw_ostream &OS, const MachineLoop *Loop, |
| 1497 | unsigned FunctionNumber) { |
| 1498 | // Add child loop information |
| 1499 | for (MachineLoop::iterator CL = Loop->begin(), E = Loop->end();CL != E; ++CL){ |
| 1500 | OS.indent((*CL)->getLoopDepth()*2) |
| 1501 | << "Child Loop BB" << FunctionNumber << "_" |
| 1502 | << (*CL)->getHeader()->getNumber() << " Depth " << (*CL)->getLoopDepth() |
| 1503 | << '\n'; |
| 1504 | PrintChildLoopComment(OS, *CL, FunctionNumber); |
| 1505 | } |
| 1506 | } |
| 1507 | |
| 1508 | /// EmitComments - Pretty-print comments for basic blocks. |
| 1509 | static void PrintBasicBlockLoopComments(const MachineBasicBlock &MBB, |
| 1510 | const MachineLoopInfo *LI, |
| 1511 | const AsmPrinter &AP) { |
| 1512 | // Add loop depth information |
| 1513 | const MachineLoop *Loop = LI->getLoopFor(&MBB); |
| 1514 | if (Loop == 0) return; |
| 1515 | |
| 1516 | MachineBasicBlock *Header = Loop->getHeader(); |
| 1517 | assert(Header && "No header for loop"); |
| 1518 | |
| 1519 | // If this block is not a loop header, just print out what is the loop header |
| 1520 | // and return. |
| 1521 | if (Header != &MBB) { |
| 1522 | AP.OutStreamer.AddComment(" in Loop: Header=BB" + |
| 1523 | Twine(AP.getFunctionNumber())+"_" + |
| 1524 | Twine(Loop->getHeader()->getNumber())+ |
| 1525 | " Depth="+Twine(Loop->getLoopDepth())); |
| 1526 | return; |
| 1527 | } |
| 1528 | |
| 1529 | // Otherwise, it is a loop header. Print out information about child and |
| 1530 | // parent loops. |
| 1531 | raw_ostream &OS = AP.OutStreamer.GetCommentOS(); |
| 1532 | |
| 1533 | PrintParentLoopComment(OS, Loop->getParentLoop(), AP.getFunctionNumber()); |
| 1534 | |
| 1535 | OS << "=>"; |
| 1536 | OS.indent(Loop->getLoopDepth()*2-2); |
| 1537 | |
| 1538 | OS << "This "; |
| 1539 | if (Loop->empty()) |
| 1540 | OS << "Inner "; |
| 1541 | OS << "Loop Header: Depth=" + Twine(Loop->getLoopDepth()) << '\n'; |
| 1542 | |
| 1543 | PrintChildLoopComment(OS, Loop, AP.getFunctionNumber()); |
| 1544 | } |
| 1545 | |
| 1546 | |
Chris Lattner | 70a54c0 | 2009-09-13 18:25:37 +0000 | [diff] [blame] | 1547 | /// EmitBasicBlockStart - This method prints the label for the specified |
| 1548 | /// MachineBasicBlock, an alignment (if present) and a comment describing |
| 1549 | /// it if appropriate. |
Chris Lattner | 662316c | 2009-09-14 03:15:54 +0000 | [diff] [blame] | 1550 | void AsmPrinter::EmitBasicBlockStart(const MachineBasicBlock *MBB) const { |
Dan Gohman | b1cac33 | 2009-10-30 01:34:35 +0000 | [diff] [blame] | 1551 | // Emit an alignment directive for this block, if needed. |
Chris Lattner | 70a54c0 | 2009-09-13 18:25:37 +0000 | [diff] [blame] | 1552 | if (unsigned Align = MBB->getAlignment()) |
| 1553 | EmitAlignment(Log2_32(Align)); |
Evan Cheng | fb8075d | 2008-02-28 00:43:03 +0000 | [diff] [blame] | 1554 | |
Dan Gohman | b1cac33 | 2009-10-30 01:34:35 +0000 | [diff] [blame] | 1555 | // If the block has its address taken, emit a special label to satisfy |
| 1556 | // references to the block. This is done so that we don't need to |
| 1557 | // remember the number of this label, and so that we can make |
| 1558 | // forward references to labels without knowing what their numbers |
| 1559 | // will be. |
Dan Gohman | 8c2b525 | 2009-10-30 01:27:03 +0000 | [diff] [blame] | 1560 | if (MBB->hasAddressTaken()) { |
Chris Lattner | 213168b | 2010-01-20 07:24:05 +0000 | [diff] [blame] | 1561 | const BasicBlock *BB = MBB->getBasicBlock(); |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 1562 | if (VerboseAsm) |
| 1563 | OutStreamer.AddComment("Address Taken"); |
Chris Lattner | 213168b | 2010-01-20 07:24:05 +0000 | [diff] [blame] | 1564 | OutStreamer.EmitLabel(GetBlockAddressSymbol(BB->getParent(), BB)); |
Dan Gohman | 8c2b525 | 2009-10-30 01:27:03 +0000 | [diff] [blame] | 1565 | } |
| 1566 | |
Dan Gohman | b1cac33 | 2009-10-30 01:34:35 +0000 | [diff] [blame] | 1567 | // Print the main label for the block. |
Dan Gohman | e3cc3f3 | 2009-10-06 17:38:38 +0000 | [diff] [blame] | 1568 | if (MBB->pred_empty() || MBB->isOnlyReachableByFallthrough()) { |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 1569 | if (VerboseAsm) { |
Dan Gohman | e3cc3f3 | 2009-10-06 17:38:38 +0000 | [diff] [blame] | 1570 | O << MAI->getCommentString() << " BB#" << MBB->getNumber() << ':'; |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 1571 | if (const BasicBlock *BB = MBB->getBasicBlock()) |
| 1572 | if (BB->hasName()) |
| 1573 | OutStreamer.AddComment("%" + BB->getName()); |
Chris Lattner | d8d0aee | 2010-01-22 21:00:45 +0000 | [diff] [blame] | 1574 | |
Chris Lattner | 523a508 | 2010-01-22 21:50:41 +0000 | [diff] [blame] | 1575 | PrintBasicBlockLoopComments(*MBB, LI, *this); |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 1576 | OutStreamer.AddBlankLine(); |
| 1577 | } |
Dan Gohman | e3cc3f3 | 2009-10-06 17:38:38 +0000 | [diff] [blame] | 1578 | } else { |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 1579 | if (VerboseAsm) { |
| 1580 | if (const BasicBlock *BB = MBB->getBasicBlock()) |
| 1581 | if (BB->hasName()) |
| 1582 | OutStreamer.AddComment("%" + BB->getName()); |
Chris Lattner | 523a508 | 2010-01-22 21:50:41 +0000 | [diff] [blame] | 1583 | PrintBasicBlockLoopComments(*MBB, LI, *this); |
Chris Lattner | 0fd90fd | 2010-01-22 19:52:01 +0000 | [diff] [blame] | 1584 | } |
Chris Lattner | d8d0aee | 2010-01-22 21:00:45 +0000 | [diff] [blame] | 1585 | |
Chris Lattner | 213168b | 2010-01-20 07:24:05 +0000 | [diff] [blame] | 1586 | OutStreamer.EmitLabel(GetMBBSymbol(MBB->getNumber())); |
Dan Gohman | e3cc3f3 | 2009-10-06 17:38:38 +0000 | [diff] [blame] | 1587 | } |
Nate Begeman | 37efe67 | 2006-04-22 18:53:45 +0000 | [diff] [blame] | 1588 | } |
Nate Begeman | 52a51e38 | 2006-08-12 21:29:52 +0000 | [diff] [blame] | 1589 | |
Evan Cheng | cc41586 | 2007-11-09 01:32:10 +0000 | [diff] [blame] | 1590 | /// printPICJumpTableSetLabel - This method prints a set label for the |
| 1591 | /// specified MachineBasicBlock for a jumptable entry. |
| 1592 | void AsmPrinter::printPICJumpTableSetLabel(unsigned uid, |
| 1593 | const MachineBasicBlock *MBB) const { |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 1594 | if (!MAI->getSetDirective()) |
Nate Begeman | 52a51e38 | 2006-08-12 21:29:52 +0000 | [diff] [blame] | 1595 | return; |
| 1596 | |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 1597 | O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix() |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 1598 | << getFunctionNumber() << '_' << uid << "_set_" << MBB->getNumber() << ',' |
| 1599 | << *GetMBBSymbol(MBB->getNumber()) |
| 1600 | << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() |
Evan Cheng | 347d39f | 2007-10-14 05:57:21 +0000 | [diff] [blame] | 1601 | << '_' << uid << '\n'; |
Nate Begeman | 52a51e38 | 2006-08-12 21:29:52 +0000 | [diff] [blame] | 1602 | } |
Evan Cheng | d6594ae | 2006-09-12 21:00:35 +0000 | [diff] [blame] | 1603 | |
Evan Cheng | cc41586 | 2007-11-09 01:32:10 +0000 | [diff] [blame] | 1604 | void AsmPrinter::printPICJumpTableSetLabel(unsigned uid, unsigned uid2, |
| 1605 | const MachineBasicBlock *MBB) const { |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 1606 | if (!MAI->getSetDirective()) |
Evan Cheng | 41349c1 | 2006-11-01 09:23:08 +0000 | [diff] [blame] | 1607 | return; |
| 1608 | |
Chris Lattner | 33adcfb | 2009-08-22 21:43:10 +0000 | [diff] [blame] | 1609 | O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix() |
Evan Cheng | 347d39f | 2007-10-14 05:57:21 +0000 | [diff] [blame] | 1610 | << getFunctionNumber() << '_' << uid << '_' << uid2 |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 1611 | << "_set_" << MBB->getNumber() << ',' |
| 1612 | << *GetMBBSymbol(MBB->getNumber()) |
| 1613 | << '-' << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() |
Evan Cheng | 347d39f | 2007-10-14 05:57:21 +0000 | [diff] [blame] | 1614 | << '_' << uid << '_' << uid2 << '\n'; |
Evan Cheng | 41349c1 | 2006-11-01 09:23:08 +0000 | [diff] [blame] | 1615 | } |
| 1616 | |
Chris Lattner | 53d4d78 | 2010-01-15 23:38:51 +0000 | [diff] [blame] | 1617 | void AsmPrinter::printVisibility(const MCSymbol *Sym, |
| 1618 | unsigned Visibility) const { |
| 1619 | if (Visibility == GlobalValue::HiddenVisibility) { |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 1620 | if (const char *Directive = MAI->getHiddenDirective()) |
| 1621 | O << Directive << *Sym << '\n'; |
Chris Lattner | 53d4d78 | 2010-01-15 23:38:51 +0000 | [diff] [blame] | 1622 | } else if (Visibility == GlobalValue::ProtectedVisibility) { |
Chris Lattner | 10b318b | 2010-01-17 21:43:43 +0000 | [diff] [blame] | 1623 | if (const char *Directive = MAI->getProtectedDirective()) |
| 1624 | O << Directive << *Sym << '\n'; |
Chris Lattner | 53d4d78 | 2010-01-15 23:38:51 +0000 | [diff] [blame] | 1625 | } |
| 1626 | } |
| 1627 | |
Anton Korobeynikov | 7751ad9 | 2008-11-22 16:15:34 +0000 | [diff] [blame] | 1628 | void AsmPrinter::printOffset(int64_t Offset) const { |
| 1629 | if (Offset > 0) |
| 1630 | O << '+' << Offset; |
| 1631 | else if (Offset < 0) |
| 1632 | O << Offset; |
| 1633 | } |
| 1634 | |
Gordon Henriksen | 5eca075 | 2008-08-17 18:44:35 +0000 | [diff] [blame] | 1635 | GCMetadataPrinter *AsmPrinter::GetOrCreateGCPrinter(GCStrategy *S) { |
| 1636 | if (!S->usesMetadata()) |
Gordon Henriksen | c317a60 | 2008-08-17 12:08:44 +0000 | [diff] [blame] | 1637 | return 0; |
| 1638 | |
Gordon Henriksen | 5eca075 | 2008-08-17 18:44:35 +0000 | [diff] [blame] | 1639 | gcp_iterator GCPI = GCMetadataPrinters.find(S); |
Gordon Henriksen | c317a60 | 2008-08-17 12:08:44 +0000 | [diff] [blame] | 1640 | if (GCPI != GCMetadataPrinters.end()) |
| 1641 | return GCPI->second; |
| 1642 | |
Gordon Henriksen | 5eca075 | 2008-08-17 18:44:35 +0000 | [diff] [blame] | 1643 | const char *Name = S->getName().c_str(); |
Gordon Henriksen | c317a60 | 2008-08-17 12:08:44 +0000 | [diff] [blame] | 1644 | |
| 1645 | for (GCMetadataPrinterRegistry::iterator |
| 1646 | I = GCMetadataPrinterRegistry::begin(), |
| 1647 | E = GCMetadataPrinterRegistry::end(); I != E; ++I) |
| 1648 | if (strcmp(Name, I->getName()) == 0) { |
Gordon Henriksen | 5eca075 | 2008-08-17 18:44:35 +0000 | [diff] [blame] | 1649 | GCMetadataPrinter *GMP = I->instantiate(); |
| 1650 | GMP->S = S; |
| 1651 | GCMetadataPrinters.insert(std::make_pair(S, GMP)); |
| 1652 | return GMP; |
Gordon Henriksen | c317a60 | 2008-08-17 12:08:44 +0000 | [diff] [blame] | 1653 | } |
| 1654 | |
Chris Lattner | 103289e | 2009-08-23 07:19:13 +0000 | [diff] [blame] | 1655 | errs() << "no GCMetadataPrinter registered for GC: " << Name << "\n"; |
Torok Edwin | c23197a | 2009-07-14 16:55:14 +0000 | [diff] [blame] | 1656 | llvm_unreachable(0); |
Gordon Henriksen | c317a60 | 2008-08-17 12:08:44 +0000 | [diff] [blame] | 1657 | } |
David Greene | 014700c | 2009-07-13 20:25:48 +0000 | [diff] [blame] | 1658 | |
| 1659 | /// EmitComments - Pretty-print comments for instructions |
Chris Lattner | 5f51cd0 | 2009-08-07 23:42:01 +0000 | [diff] [blame] | 1660 | void AsmPrinter::EmitComments(const MachineInstr &MI) const { |
David Greene | 1924aab | 2009-11-13 21:34:57 +0000 | [diff] [blame] | 1661 | if (!VerboseAsm) |
| 1662 | return; |
David Greene | 3ac1ab8 | 2009-07-16 22:24:20 +0000 | [diff] [blame] | 1663 | |
David Greene | 1924aab | 2009-11-13 21:34:57 +0000 | [diff] [blame] | 1664 | bool Newline = false; |
| 1665 | |
| 1666 | if (!MI.getDebugLoc().isUnknown()) { |
Devang Patel | 6b61f58 | 2010-01-16 06:09:35 +0000 | [diff] [blame] | 1667 | DILocation DLT = MF->getDILocation(MI.getDebugLoc()); |
David Greene | 1924aab | 2009-11-13 21:34:57 +0000 | [diff] [blame] | 1668 | |
| 1669 | // Print source line info. |
| 1670 | O.PadToColumn(MAI->getCommentColumn()); |
Dan Gohman | 3b9bc04 | 2009-12-05 00:23:29 +0000 | [diff] [blame] | 1671 | O << MAI->getCommentString() << ' '; |
Devang Patel | 6b61f58 | 2010-01-16 06:09:35 +0000 | [diff] [blame] | 1672 | DIScope Scope = DLT.getScope(); |
Dan Gohman | 3b9bc04 | 2009-12-05 00:23:29 +0000 | [diff] [blame] | 1673 | // Omit the directory, because it's likely to be long and uninteresting. |
| 1674 | if (!Scope.isNull()) |
| 1675 | O << Scope.getFilename(); |
| 1676 | else |
| 1677 | O << "<unknown>"; |
Devang Patel | 6b61f58 | 2010-01-16 06:09:35 +0000 | [diff] [blame] | 1678 | O << ':' << DLT.getLineNumber(); |
| 1679 | if (DLT.getColumnNumber() != 0) |
| 1680 | O << ':' << DLT.getColumnNumber(); |
David Greene | 1924aab | 2009-11-13 21:34:57 +0000 | [diff] [blame] | 1681 | Newline = true; |
David Greene | 3ac1ab8 | 2009-07-16 22:24:20 +0000 | [diff] [blame] | 1682 | } |
David Greene | 1924aab | 2009-11-13 21:34:57 +0000 | [diff] [blame] | 1683 | |
David Greene | ddff941 | 2009-11-16 15:12:23 +0000 | [diff] [blame] | 1684 | // Check for spills and reloads |
| 1685 | int FI; |
| 1686 | |
| 1687 | const MachineFrameInfo *FrameInfo = |
| 1688 | MI.getParent()->getParent()->getFrameInfo(); |
| 1689 | |
| 1690 | // We assume a single instruction only has a spill or reload, not |
| 1691 | // both. |
David Greene | f7ea2a5 | 2009-12-04 22:46:04 +0000 | [diff] [blame] | 1692 | const MachineMemOperand *MMO; |
David Greene | ddff941 | 2009-11-16 15:12:23 +0000 | [diff] [blame] | 1693 | if (TM.getInstrInfo()->isLoadFromStackSlotPostFE(&MI, FI)) { |
| 1694 | if (FrameInfo->isSpillSlotObjectIndex(FI)) { |
David Greene | f7ea2a5 | 2009-12-04 22:46:04 +0000 | [diff] [blame] | 1695 | MMO = *MI.memoperands_begin(); |
David Greene | ddff941 | 2009-11-16 15:12:23 +0000 | [diff] [blame] | 1696 | if (Newline) O << '\n'; |
| 1697 | O.PadToColumn(MAI->getCommentColumn()); |
Dan Gohman | fcafe44 | 2009-12-04 23:19:55 +0000 | [diff] [blame] | 1698 | O << MAI->getCommentString() << ' ' << MMO->getSize() << "-byte Reload"; |
David Greene | ddff941 | 2009-11-16 15:12:23 +0000 | [diff] [blame] | 1699 | Newline = true; |
| 1700 | } |
| 1701 | } |
David Greene | f7ea2a5 | 2009-12-04 22:46:04 +0000 | [diff] [blame] | 1702 | else if (TM.getInstrInfo()->hasLoadFromStackSlot(&MI, MMO, FI)) { |
David Greene | ddff941 | 2009-11-16 15:12:23 +0000 | [diff] [blame] | 1703 | if (FrameInfo->isSpillSlotObjectIndex(FI)) { |
| 1704 | if (Newline) O << '\n'; |
| 1705 | O.PadToColumn(MAI->getCommentColumn()); |
Dan Gohman | fcafe44 | 2009-12-04 23:19:55 +0000 | [diff] [blame] | 1706 | O << MAI->getCommentString() << ' ' |
| 1707 | << MMO->getSize() << "-byte Folded Reload"; |
David Greene | ddff941 | 2009-11-16 15:12:23 +0000 | [diff] [blame] | 1708 | Newline = true; |
| 1709 | } |
| 1710 | } |
| 1711 | else if (TM.getInstrInfo()->isStoreToStackSlotPostFE(&MI, FI)) { |
| 1712 | if (FrameInfo->isSpillSlotObjectIndex(FI)) { |
David Greene | f7ea2a5 | 2009-12-04 22:46:04 +0000 | [diff] [blame] | 1713 | MMO = *MI.memoperands_begin(); |
David Greene | ddff941 | 2009-11-16 15:12:23 +0000 | [diff] [blame] | 1714 | if (Newline) O << '\n'; |
| 1715 | O.PadToColumn(MAI->getCommentColumn()); |
Dan Gohman | fcafe44 | 2009-12-04 23:19:55 +0000 | [diff] [blame] | 1716 | O << MAI->getCommentString() << ' ' << MMO->getSize() << "-byte Spill"; |
David Greene | ddff941 | 2009-11-16 15:12:23 +0000 | [diff] [blame] | 1717 | Newline = true; |
| 1718 | } |
| 1719 | } |
David Greene | f7ea2a5 | 2009-12-04 22:46:04 +0000 | [diff] [blame] | 1720 | else if (TM.getInstrInfo()->hasStoreToStackSlot(&MI, MMO, FI)) { |
David Greene | ddff941 | 2009-11-16 15:12:23 +0000 | [diff] [blame] | 1721 | if (FrameInfo->isSpillSlotObjectIndex(FI)) { |
| 1722 | if (Newline) O << '\n'; |
| 1723 | O.PadToColumn(MAI->getCommentColumn()); |
Dan Gohman | fcafe44 | 2009-12-04 23:19:55 +0000 | [diff] [blame] | 1724 | O << MAI->getCommentString() << ' ' |
| 1725 | << MMO->getSize() << "-byte Folded Spill"; |
David Greene | ddff941 | 2009-11-16 15:12:23 +0000 | [diff] [blame] | 1726 | Newline = true; |
| 1727 | } |
| 1728 | } |
| 1729 | |
| 1730 | // Check for spill-induced copies |
| 1731 | unsigned SrcReg, DstReg, SrcSubIdx, DstSubIdx; |
| 1732 | if (TM.getInstrInfo()->isMoveInstr(MI, SrcReg, DstReg, |
| 1733 | SrcSubIdx, DstSubIdx)) { |
| 1734 | if (MI.getAsmPrinterFlag(ReloadReuse)) { |
| 1735 | if (Newline) O << '\n'; |
| 1736 | O.PadToColumn(MAI->getCommentColumn()); |
| 1737 | O << MAI->getCommentString() << " Reload Reuse"; |
David Greene | ddff941 | 2009-11-16 15:12:23 +0000 | [diff] [blame] | 1738 | } |
| 1739 | } |
David Greene | 014700c | 2009-07-13 20:25:48 +0000 | [diff] [blame] | 1740 | } |
| 1741 | |