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Prepare support of Itanium ABI on ARM as opposed to EHABI by

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conditionally emitting .fnstart and friends only for EHABI.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207718 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Joerg Sonnenberger 2014-04-30 22:43:13 +00:00
parent e4c1d49b1d
commit 6c0458d2b4
2 changed files with 20 additions and 15 deletions
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2
lib/CodeGen/AsmPrinter/ARMException.cpp
View File

@ -57,6 +57,7 @@ void ARMException::endModule() {
/// beginFunction - Gather pre-function exception information. Assumes it's
/// being emitted immediately after the function entry point.
void ARMException::beginFunction(const MachineFunction *MF) {
if (Asm->MAI->getExceptionHandlingType() == ExceptionHandling::ARM)
getTargetStreamer().emitFnStart();
if (Asm->MF->getFunction()->needsUnwindTableEntry())
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("eh_func_begin",
@ -104,6 +105,7 @@ void ARMException::endFunction(const MachineFunction *) {
}
}
if (Asm->MAI->getExceptionHandlingType() == ExceptionHandling::ARM)
ATS.emitFnEnd();
}

3
lib/Target/ARM/ARMAsmPrinter.cpp
View File

@ -993,6 +993,7 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) {
RegList.push_back(SrcReg);
break;
}
if (MAI->getExceptionHandlingType() == ExceptionHandling::ARM)
ATS.emitRegSave(RegList, Opc == ARM::VSTMDDB_UPD);
} else {
// Changes of stack / frame pointer.
@ -1038,6 +1039,7 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) {
}
}
if (MAI->getExceptionHandlingType() == ExceptionHandling::ARM) {
if (DstReg == FramePtr && FramePtr != ARM::SP)
// Set-up of the frame pointer. Positive values correspond to "add"
// instruction.
@ -1051,6 +1053,7 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) {
// instruction.
ATS.emitMovSP(DstReg, -Offset);
}
}
} else if (DstReg == ARM::SP) {
MI->dump();
llvm_unreachable("Unsupported opcode for unwinding information");