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Look at only the terminators of the basic block. Also, if we're using the new EH

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scheme, return 'true' so that it doesn't try to run the old EH scheme's fixup on
the new code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138605 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2011-08-25 23:48:11 +00:00
parent c82a61c6c6
commit 09908c4b4a
1 changed files with 9 additions and 5 deletions
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14
lib/CodeGen/DwarfEHPrepare.cpp
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@ -663,14 +663,18 @@ Instruction *DwarfEHPrepare::CreateExceptionValueCall(BasicBlock *BB) {
/// InsertUnwindResumeCalls - Convert the ResumeInsts that are still present
/// into calls to the appropriate _Unwind_Resume function.
bool DwarfEHPrepare::InsertUnwindResumeCalls() {
bool UsesNewEH = false;
SmallVector<ResumeInst*, 16> Resumes;
for (Function::iterator I = F->begin(), E = F->end(); I != E; ++I)
for (BasicBlock::iterator II = I->begin(), IE = I->end(); II != IE; ++II)
if (ResumeInst *RI = dyn_cast<ResumeInst>(II))
Resumes.push_back(RI);
for (Function::iterator I = F->begin(), E = F->end(); I != E; ++I) {
TerminatorInst *TI = I->getTerminator();
if (ResumeInst *RI = dyn_cast<ResumeInst>(TI))
Resumes.push_back(RI);
else if (InvokeInst *II = dyn_cast<InvokeInst>(TI))
UsesNewEH = II->getUnwindDest()->isLandingPad();
}
if (Resumes.empty())
return false;
return UsesNewEH;
// Find the rewind function if we didn't already.
if (!RewindFunction) {