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disable this transformation in the one obscure case that really pessimizes

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pointer analysis.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20916 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-03-29 06:37:47 +00:00
parent 0b77be8f0f
commit b1515fe522
1 changed files with 3 additions and 0 deletions
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3
lib/Transforms/Scalar/InstructionCombining.cpp
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@ -4646,6 +4646,9 @@ static Instruction *InstCombineLoadCast(InstCombiner &IC, LoadInst &LI) {
}
if ((SrcPTy->isInteger() || isa<PointerType>(SrcPTy)) &&
// Do not allow turning this into a load of an integer, which is then
// casted to a pointer, this pessimizes pointer analysis a lot.
(isa<PointerType>(SrcPTy) == isa<PointerType>(LI.getType())) &&
IC.getTargetData().getTypeSize(SrcPTy) ==
IC.getTargetData().getTypeSize(DestPTy)) {