Added JumpTable support
Fixed some AsmPrinter issues
Added GLOBAL_OFFSET_TABLE Node handle.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44024 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsAsmPrinter.cpp b/lib/Target/Mips/MipsAsmPrinter.cpp
index 2dc9c2f..4a934b5 100644
--- a/lib/Target/Mips/MipsAsmPrinter.cpp
+++ b/lib/Target/Mips/MipsAsmPrinter.cpp
@@ -29,6 +29,7 @@
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetOptions.h"
#include "llvm/Support/Mangler.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/SetVector.h"
@@ -237,9 +238,8 @@
const Function *F = MF.getFunction();
SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
- // On Mips GAS, if .align #n is present, #n means the number of bits
- // to be cleared. So, if we want 4 byte alignment, we must have .align 2
- EmitAlignment(1, F);
+ // 2 bits aligned
+ EmitAlignment(2, F);
O << "\t.globl\t" << CurrentFnName << "\n";
O << "\t.ent\t" << CurrentFnName << "\n";
@@ -280,6 +280,9 @@
// Print out constants referenced by the function
EmitConstantPool(MF.getConstantPool());
+ // Print out jump tables referenced by the function
+ EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
+
O << "\n\n";
// What's my mangled name?
@@ -388,6 +391,11 @@
O << MO.getSymbolName();
break;
+ case MachineOperand::MO_JumpTableIndex:
+ O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
+ << '_' << MO.getJumpTableIndex();
+ break;
+
// FIXME: Verify correct
case MachineOperand::MO_ConstantPoolIndex:
O << TAI->getPrivateGlobalPrefix() << "CPI"
@@ -450,19 +458,30 @@
std::string name = Mang->getValueName(I);
Constant *C = I->getInitializer();
unsigned Size = TD->getABITypeSize(C->getType());
- unsigned Align = TD->getPrefTypeAlignment(C->getType());
+ unsigned Align = TD->getPreferredAlignmentLog(I);
+ // Is this correct ?
if (C->isNullValue() && (I->hasLinkOnceLinkage() ||
- I->hasInternalLinkage() || I->hasWeakLinkage()
- /* FIXME: Verify correct */)) {
+ I->hasInternalLinkage() || I->hasWeakLinkage()))
+ {
+ if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
- SwitchToDataSection(".data", I);
- if (I->hasInternalLinkage())
- O << "\t.local " << name << "\n";
+ if (!NoZerosInBSS && TAI->getBSSSection())
+ SwitchToDataSection(TAI->getBSSSection(), I);
+ else
+ SwitchToDataSection(TAI->getDataSection(), I);
- O << "\t.comm " << name << ","
- << TD->getABITypeSize(C->getType())
- << "," << Align << "\n";
+ if (I->hasInternalLinkage()) {
+ if (TAI->getLCOMMDirective())
+ O << TAI->getLCOMMDirective() << name << "," << Size;
+ else
+ O << "\t.local\t" << name << "\n";
+ } else {
+ O << TAI->getCOMMDirective() << name << "," << Size;
+ // The .comm alignment in bytes.
+ if (TAI->getCOMMDirectiveTakesAlignment())
+ O << "," << (1 << Align);
+ }
} else {
@@ -483,24 +502,37 @@
// something. For now, just emit them as external.
case GlobalValue::ExternalLinkage:
// If external or appending, declare as a global symbol
- O << "\t.globl " << name << "\n";
+ O << TAI->getGlobalDirective() << name << "\n";
+ // Fall Through
case GlobalValue::InternalLinkage:
- if (C->isNullValue())
- SwitchToDataSection(".bss", I);
- else
- SwitchToDataSection(".data", I);
+ // FIXME: special handling for ".ctors" & ".dtors" sections
+ if (I->hasSection() && (I->getSection() == ".ctors" ||
+ I->getSection() == ".dtors")) {
+ std::string SectionName = ".section " + I->getSection();
+ SectionName += ",\"aw\",%progbits";
+ SwitchToDataSection(SectionName.c_str());
+ } else {
+ if (C->isNullValue() && !NoZerosInBSS && TAI->getBSSSection())
+ SwitchToDataSection(TAI->getBSSSection(), I);
+ else if (!I->isConstant())
+ SwitchToDataSection(TAI->getDataSection(), I);
+ else {
+ // Read-only data.
+ if (TAI->getReadOnlySection())
+ SwitchToDataSection(TAI->getReadOnlySection(), I);
+ else
+ SwitchToDataSection(TAI->getDataSection(), I);
+ }
+ }
break;
case GlobalValue::GhostLinkage:
- cerr << "Should not have any"
- << "unmaterialized functions!\n";
+ cerr << "Should not have any unmaterialized functions!\n";
abort();
case GlobalValue::DLLImportLinkage:
- cerr << "DLLImport linkage is"
- << "not supported by this target!\n";
+ cerr << "DLLImport linkage is not supported by this target!\n";
abort();
case GlobalValue::DLLExportLinkage:
- cerr << "DLLExport linkage is"
- << "not supported by this target!\n";
+ cerr << "DLLExport linkage is not supported by this target!\n";
abort();
default:
assert(0 && "Unknown linkage type!");