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make this 64 bit clean, fixed test30 of /Regression/Transforms/InstCombine/add.ll

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24158 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth 2005-11-02 18:35:40 +00:00
parent e8148bc291
commit 7bbff04f7f
1 changed files with 1 additions and 1 deletions
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2
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -710,7 +710,7 @@ Instruction *InstCombiner::visitAdd(BinaryOperator &I) {
// X + (signbit) --> X ^ signbit
if (ConstantInt *CI = dyn_cast<ConstantInt>(RHSC)) {
unsigned NumBits = CI->getType()->getPrimitiveSizeInBits();
uint64_t Val = CI->getRawValue() & (1ULL << NumBits)-1;
uint64_t Val = CI->getRawValue() & (~0ULL >> (64- NumBits));
if (Val == (1ULL << (NumBits-1)))
return BinaryOperator::createXor(LHS, RHS);
}