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Handle the situation in 2008-01-25-EmptyFunction.ll

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correctly when unwind info is being generated.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49366 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen 2008-04-08 00:37:56 +00:00
parent a25e5787bc
commit f2247cfb38
1 changed files with 11 additions and 10 deletions
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21
lib/Target/X86/X86ATTAsmPrinter.cpp
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@ -156,17 +156,8 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
DW.BeginFunction(&MF); DW.BeginFunction(&MF);
} }
if (Subtarget->isTargetDarwin()) {
// If the function is empty, then we need to emit *something*. Otherwise,
// the function's label might be associated with something that it wasn't
// meant to be associated with. We emit a noop in this situation.
MachineFunction::iterator I = MF.begin();
if (++I == MF.end() && MF.front().empty())
O << "\tnop\n";
}
// Print out code for the function. // Print out code for the function.
bool hasAnyRealCode = false;
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end(); for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
I != E; ++I) { I != E; ++I) {
// Print a label for the basic block. // Print a label for the basic block.
@ -177,10 +168,20 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end(); for (MachineBasicBlock::const_iterator II = I->begin(), IE = I->end();
II != IE; ++II) { II != IE; ++II) {
// Print the assembly for the instruction. // Print the assembly for the instruction.
if (II->getOpcode() != X86::LABEL)
hasAnyRealCode = true;
printMachineInstruction(II); printMachineInstruction(II);
} }
} }
if (Subtarget->isTargetDarwin() && !hasAnyRealCode) {
// If the function is empty, then we need to emit *something*. Otherwise,
// the function's label might be associated with something that it wasn't
// meant to be associated with. We emit a noop in this situation.
// We are assuming inline asms are code.
O << "\tnop\n";
}
if (TAI->hasDotTypeDotSizeDirective()) if (TAI->hasDotTypeDotSizeDirective())
O << "\t.size\t" << CurrentFnName << ", .-" << CurrentFnName << "\n"; O << "\t.size\t" << CurrentFnName << ", .-" << CurrentFnName << "\n";