Refactor X86AsmPrinter.cpp into multiple files. Patch contributed
by Aaron Gray, cleaned up by me.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22324 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ATTAsmPrinter.cpp b/lib/Target/X86/X86ATTAsmPrinter.cpp
new file mode 100755
index 0000000..a7e6729
--- /dev/null
+++ b/lib/Target/X86/X86ATTAsmPrinter.cpp
@@ -0,0 +1,171 @@
+//===-- X86ATTAsmPrinter.cpp - Convert X86 LLVM code to Intel assembly ----===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains a printer that converts from our internal representation
+// of machine-dependent LLVM code to AT&T format assembly
+// language. This printer is the output mechanism used by `llc'.
+//
+//===----------------------------------------------------------------------===//
+
+#include "X86ATTAsmPrinter.h"
+#include "X86.h"
+#include "X86TargetMachine.h"
+#include "llvm/Module.h"
+#include "llvm/Support/Mangler.h"
+using namespace llvm;
+using namespace x86;
+
+/// runOnMachineFunction - This uses the printMachineInstruction()
+/// method to print assembly for each instruction.
+///
+bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
+ setupMachineFunction(MF);
+ O << "\n\n";
+
+ // Print out constants referenced by the function
+ printConstantPool(MF.getConstantPool());
+
+ // Print out labels for the function.
+ O << "\t.text\n";
+ emitAlignment(4);
+ O << "\t.globl\t" << CurrentFnName << "\n";
+ if (!forCygwin && !forDarwin)
+ O << "\t.type\t" << CurrentFnName << ", @function\n";
+ O << CurrentFnName << ":\n";
+
+ // Print out code for the function.
+ for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
+ I != E; ++I) {
+ // Print a label for the basic block.
+ if (I->pred_begin() != I->pred_end())
+ O << ".LBB" << CurrentFnName << "_" << I->getNumber() << ":\t"
+ << CommentString << " " << I->getBasicBlock()->getName() << "\n";
+ for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
+ II != E; ++II) {
+ // Print the assembly for the instruction.
+ O << "\t";
+ printMachineInstruction(II);
+ }
+ }
+
+ // We didn't modify anything.
+ return false;
+}
+
+void X86ATTAsmPrinter::printOp(const MachineOperand &MO, bool isCallOp) {
+ const MRegisterInfo &RI = *TM.getRegisterInfo();
+ switch (MO.getType()) {
+ case MachineOperand::MO_VirtualRegister:
+ case MachineOperand::MO_MachineRegister:
+ assert(MRegisterInfo::isPhysicalRegister(MO.getReg()) &&
+ "Virtual registers should not make it this far!");
+ O << '%';
+ for (const char *Name = RI.get(MO.getReg()).Name; *Name; ++Name)
+ O << (char)tolower(*Name);
+ return;
+
+ case MachineOperand::MO_SignExtendedImmed:
+ case MachineOperand::MO_UnextendedImmed:
+ O << '$' << (int)MO.getImmedValue();
+ return;
+ case MachineOperand::MO_MachineBasicBlock: {
+ MachineBasicBlock *MBBOp = MO.getMachineBasicBlock();
+ O << ".LBB" << Mang->getValueName(MBBOp->getParent()->getFunction())
+ << "_" << MBBOp->getNumber () << "\t# "
+ << MBBOp->getBasicBlock ()->getName ();
+ return;
+ }
+ case MachineOperand::MO_PCRelativeDisp:
+ std::cerr << "Shouldn't use addPCDisp() when building X86 MachineInstrs";
+ abort ();
+ return;
+ case MachineOperand::MO_GlobalAddress: {
+ if (!isCallOp) O << '$';
+ O << Mang->getValueName(MO.getGlobal());
+ int Offset = MO.getOffset();
+ if (Offset > 0)
+ O << "+" << Offset;
+ else if (Offset < 0)
+ O << Offset;
+ return;
+ }
+ case MachineOperand::MO_ExternalSymbol:
+ if (!isCallOp) O << '$';
+ O << GlobalPrefix << MO.getSymbolName();
+ return;
+ default:
+ O << "<unknown operand type>"; return;
+ }
+}
+
+void X86ATTAsmPrinter::printMemReference(const MachineInstr *MI, unsigned Op){
+ assert(isMem(MI, Op) && "Invalid memory reference!");
+
+ const MachineOperand &BaseReg = MI->getOperand(Op);
+ int ScaleVal = MI->getOperand(Op+1).getImmedValue();
+ const MachineOperand &IndexReg = MI->getOperand(Op+2);
+ const MachineOperand &DispSpec = MI->getOperand(Op+3);
+
+ if (BaseReg.isFrameIndex()) {
+ O << "[frame slot #" << BaseReg.getFrameIndex();
+ if (DispSpec.getImmedValue())
+ O << " + " << DispSpec.getImmedValue();
+ O << "]";
+ return;
+ } else if (BaseReg.isConstantPoolIndex()) {
+ O << ".CPI" << CurrentFnName << "_"
+ << BaseReg.getConstantPoolIndex();
+ if (DispSpec.getImmedValue())
+ O << "+" << DispSpec.getImmedValue();
+ if (IndexReg.getReg()) {
+ O << "(,";
+ printOp(IndexReg);
+ if (ScaleVal != 1)
+ O << "," << ScaleVal;
+ O << ")";
+ }
+ return;
+ }
+
+ if (DispSpec.isGlobalAddress()) {
+ printOp(DispSpec, true);
+ } else {
+ int DispVal = DispSpec.getImmedValue();
+ if (DispVal || (!IndexReg.getReg() && !BaseReg.getReg()))
+ O << DispVal;
+ }
+
+ if (IndexReg.getReg() || BaseReg.getReg()) {
+ O << "(";
+ if (BaseReg.getReg())
+ printOp(BaseReg);
+
+ if (IndexReg.getReg()) {
+ O << ",";
+ printOp(IndexReg);
+ if (ScaleVal != 1)
+ O << "," << ScaleVal;
+ }
+
+ O << ")";
+ }
+}
+
+/// printMachineInstruction -- Print out a single X86 LLVM instruction
+/// MI in Intel syntax to the current output stream.
+///
+void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
+ ++EmittedInsts;
+ // Call the autogenerated instruction printer routines.
+ printInstruction(MI);
+}
+
+// Include the auto-generated portion of the assembly writer.
+#include "X86GenAsmWriter.inc"
+