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[PM] Change LowerExpectIntrinsic to actually return true when it has

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changed the IR. This is particularly easy as we can just look for the
existence of any expect intrinsic at all to know whether we've changed
the IR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226998 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2015-01-24 11:12:57 +00:00
parent c31d4e4a86
commit f6efb2b30b
1 changed files with 4 additions and 1 deletions
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5
lib/Transforms/Scalar/LowerExpectIntrinsic.cpp
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@ -144,6 +144,8 @@ static bool handleBranchExpect(BranchInst &BI) {
}
bool LowerExpectIntrinsic::runOnFunction(Function &F) {
bool Changed = false;
for (BasicBlock &BB : F) {
// Create "block_weights" metadata.
if (BranchInst *BI = dyn_cast<BranchInst>(BB.getTerminator())) {
@ -165,11 +167,12 @@ bool LowerExpectIntrinsic::runOnFunction(Function &F) {
Value *Exp = CI->getArgOperand(0);
CI->replaceAllUsesWith(Exp);
CI->eraseFromParent();
Changed = true;
}
}
}
return false;
return Changed;
}
char LowerExpectIntrinsic::ID = 0;