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Replace the -unwind-tables option with a per function flag. This is more

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LTO friendly as we can now correctly merge files compiled with or without
-fasynchronous-unwind-tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132033 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2011-05-25 03:44:17 +00:00
parent 053546c31e
commit fc2bb8c444
14 changed files with 48 additions and 28 deletions
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4
lib/CodeGen/AsmPrinter/ARMException.cpp
View File

@@ -52,7 +52,7 @@ void ARMException::EndModule() {
/// being emitted immediately after the function entry point.
void ARMException::BeginFunction(const MachineFunction *MF) {
Asm->OutStreamer.EmitFnStart();
if (!Asm->MF->getFunction()->doesNotThrow() || UnwindTablesMandatory)
if (Asm->MF->getFunction()->needsUnwindTableEntry())
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_begin",
Asm->getFunctionNumber()));
}
@@ -60,7 +60,7 @@ void ARMException::BeginFunction(const MachineFunction *MF) {
/// EndFunction - Gather and emit post-function exception information.
///
void ARMException::EndFunction() {
if (Asm->MF->getFunction()->doesNotThrow() && !UnwindTablesMandatory)
if (!Asm->MF->getFunction()->needsUnwindTableEntry())
Asm->OutStreamer.EmitCantUnwind();
else {
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_end",

10
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
View File

@@ -591,13 +591,9 @@ static bool EmitDebugValueComment(const MachineInstr *MI, AsmPrinter &AP) {
}
AsmPrinter::CFIMoveType AsmPrinter::needsCFIMoves() {
if (MAI->getExceptionHandlingType() == ExceptionHandling::DwarfCFI) {
if (UnwindTablesMandatory)
return CFI_M_EH;
if (!MF->getFunction()->doesNotThrow())
return CFI_M_EH;
}
if (MAI->getExceptionHandlingType() == ExceptionHandling::DwarfCFI &&
MF->getFunction()->needsUnwindTableEntry())
return CFI_M_EH;
if (MMI->hasDebugInfo())
return CFI_M_Debug;