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| author | Chris Lattner <sabre@nondot.org> | 2005-03-29 06:37:47 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-03-29 06:37:47 +0000 |
| commit | b1515fe52270506faf1cff3184606cf76ace892b (patch) | |
| tree | 1eeedd9fc6db59fe4d7dff638ce703b1f2814f9e | |
| parent | 0b77be8f0f56cfcd1d6c39760151caf34f96029a (diff) | |
disable this transformation in the one obscure case that really pessimizes
pointer analysis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20916 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index e944672d262..40088ba06be 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -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)) { |