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[CodeGenPrepare] Use APInt to check the value of the immediate in a and

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while checking candidate for bit field extract.
Otherwise the value may not fit in uint64_t and this will trigger an
assertion.

This fixes PR19503.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206834 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Quentin Colombet
2014-04-22 01:20:34 +00:00
parent bb67355af8
commit 8959c39450
2 changed files with 25 additions and 2 deletions
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4
lib/CodeGen/CodeGenPrepare.cpp
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@@ -639,9 +639,9 @@ bool isExtractBitsCandidateUse(Instruction *User) {
!isa<ConstantInt>(User->getOperand(1)))
return false;
unsigned Cimm = dyn_cast<ConstantInt>(User->getOperand(1))->getZExtValue();
const APInt &Cimm = cast<ConstantInt>(User->getOperand(1))->getValue();
if (Cimm & (Cimm + 1))
if ((Cimm & (Cimm + 1)).getBoolValue())
return false;
}
return true;