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Relax the requirement that the exception object must be an instruction. During

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bugpoint-ing, it may turn into something else.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156998 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2012-05-17 17:59:51 +00:00
parent 68ef0382e4
commit 29424e8133
1 changed files with 6 additions and 6 deletions
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12
lib/CodeGen/DwarfEHPrepare.cpp
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@ -39,7 +39,7 @@ namespace {
Constant *RewindFunction;
bool InsertUnwindResumeCalls(Function &Fn);
Instruction *GetExceptionObject(ResumeInst *RI);
Value *GetExceptionObject(ResumeInst *RI);
public:
static char ID; // Pass identification, replacement for typeid.
@ -68,9 +68,9 @@ FunctionPass *llvm::createDwarfEHPass(const TargetMachine *tm) {
/// GetExceptionObject - Return the exception object from the value passed into
/// the 'resume' instruction (typically an aggregate). Clean up any dead
/// instructions, including the 'resume' instruction.
Instruction *DwarfEHPrepare::GetExceptionObject(ResumeInst *RI) {
Value *DwarfEHPrepare::GetExceptionObject(ResumeInst *RI) {
Value *V = RI->getOperand(0);
Instruction *ExnObj = 0;
Value *ExnObj = 0;
InsertValueInst *SelIVI = dyn_cast<InsertValueInst>(V);
LoadInst *SelLoad = 0;
InsertValueInst *ExcIVI = 0;
@ -81,7 +81,7 @@ Instruction *DwarfEHPrepare::GetExceptionObject(ResumeInst *RI) {
ExcIVI = dyn_cast<InsertValueInst>(SelIVI->getOperand(0));
if (ExcIVI && isa<UndefValue>(ExcIVI->getOperand(0)) &&
ExcIVI->getNumIndices() == 1 && *ExcIVI->idx_begin() == 0) {
ExnObj = cast<Instruction>(ExcIVI->getOperand(1));
ExnObj = ExcIVI->getOperand(1);
SelLoad = dyn_cast<LoadInst>(SelIVI->getOperand(1));
EraseIVIs = true;
}
@ -139,7 +139,7 @@ bool DwarfEHPrepare::InsertUnwindResumeCalls(Function &Fn) {
// _Unwind_Resume to the end of the single resume block.
ResumeInst *RI = Resumes.front();
BasicBlock *UnwindBB = RI->getParent();
Instruction *ExnObj = GetExceptionObject(RI);
Value *ExnObj = GetExceptionObject(RI);
// Call the _Unwind_Resume function.
CallInst *CI = CallInst::Create(RewindFunction, ExnObj, "", UnwindBB);
@ -162,7 +162,7 @@ bool DwarfEHPrepare::InsertUnwindResumeCalls(Function &Fn) {
BasicBlock *Parent = RI->getParent();
BranchInst::Create(UnwindBB, Parent);
Instruction *ExnObj = GetExceptionObject(RI);
Value *ExnObj = GetExceptionObject(RI);
PN->addIncoming(ExnObj, Parent);
++NumResumesLowered;