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Print out an informative comment for KILL instructions.

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The KILL pseudo-instruction may survive to the asm printer pass, just like the IMPLICIT_DEF. Print the KILL as a comment instead of just leaving a blank line in the output.

With -asm-verbose=0, a blank line is printed, like IMPLICIT?DEF.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86041 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2009-11-04 19:24:37 +00:00
parent 0fb7e18edd
commit ad68264f59
5 changed files with 18 additions and 2 deletions
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2
include/llvm/CodeGen/AsmPrinter.h
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@ -375,6 +375,8 @@ namespace llvm {
/// that is an implicit def.
virtual void printImplicitDef(const MachineInstr *MI) const;
/// printKill - This method prints the specified kill machine instruction.
virtual void printKill(const MachineInstr *MI) const;
/// printPICJumpTableSetLabel - This method prints a set label for the
/// specified MachineBasicBlock for a jumptable entry.

11
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
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@ -1590,6 +1590,17 @@ void AsmPrinter::printImplicitDef(const MachineInstr *MI) const {
<< TRI->getName(MI->getOperand(0).getReg());
}
void AsmPrinter::printKill(const MachineInstr *MI) const {
if (!VerboseAsm) return;
O.PadToColumn(MAI->getCommentColumn());
O << MAI->getCommentString() << " kill:";
for (unsigned n = 0, e = MI->getNumOperands(); n != e; ++n) {
const MachineOperand &op = MI->getOperand(n);
assert(op.isReg() && "KILL instruction must have only register operands");
O << ' ' << TRI->getName(op.getReg()) << (op.isDef() ? "<def>" : "<kill>");
}
}
/// printLabel - This method prints a local label used by debug and
/// exception handling tables.
void AsmPrinter::printLabel(const MachineInstr *MI) const {

1
lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
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@ -1346,6 +1346,7 @@ void ARMAsmPrinter::printInstructionThroughMCStreamer(const MachineInstr *MI) {
printLabel(MI);
return;
case TargetInstrInfo::KILL:
printKill(MI);
return;
case TargetInstrInfo::INLINEASM:
O << '\t';

1
lib/Target/MSP430/AsmPrinter/MSP430AsmPrinter.cpp
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@ -306,6 +306,7 @@ void MSP430AsmPrinter::printInstructionThroughMCStreamer(const MachineInstr *MI)
printLabel(MI);
return;
case TargetInstrInfo::KILL:
printKill(MI);
return;
case TargetInstrInfo::INLINEASM:
O << '\t';

1
lib/Target/X86/AsmPrinter/X86MCInstLower.cpp
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@ -412,6 +412,7 @@ void X86AsmPrinter::printInstructionThroughMCStreamer(const MachineInstr *MI) {
printImplicitDef(MI);
return;
case TargetInstrInfo::KILL:
printKill(MI);
return;
case X86::MOVPC32r: {
MCInst TmpInst;