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author | Benjamin Kramer <benny.kra@googlemail.com> | 2014-06-24 10:47:52 +0000 |
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committer | Benjamin Kramer <benny.kra@googlemail.com> | 2014-06-24 10:47:52 +0000 |
commit | 0e6156a1a2579fdb1dfc139bf09caf5a930a4052 (patch) | |
tree | 7202c9be8ad4459b0311fca08923b16d1363d114 /lib/Transforms | |
parent | 9c8840362525b89774c10378317fc18e5d222ba8 (diff) | |
download | llvm-0e6156a1a2579fdb1dfc139bf09caf5a930a4052.tar.gz llvm-0e6156a1a2579fdb1dfc139bf09caf5a930a4052.tar.bz2 llvm-0e6156a1a2579fdb1dfc139bf09caf5a930a4052.tar.xz |
InstCombine: Disable umul.with.overflow recognition for vectors.
It doesn't make a lot on most targets and the code isn't ready for it. PR20113.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211583 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
-rw-r--r-- | lib/Transforms/InstCombine/InstCombineCompares.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineCompares.cpp b/lib/Transforms/InstCombine/InstCombineCompares.cpp index 639d8319e0..f204eeb548 100644 --- a/lib/Transforms/InstCombine/InstCombineCompares.cpp +++ b/lib/Transforms/InstCombine/InstCombineCompares.cpp @@ -2042,9 +2042,13 @@ static Instruction *ProcessUAddIdiom(Instruction &I, Value *OrigAddV, /// replacement required. static Instruction *ProcessUMulZExtIdiom(ICmpInst &I, Value *MulVal, Value *OtherVal, InstCombiner &IC) { + // Don't bother doing this transformation for pointers, don't do it for + // vectors. + if (!isa<IntegerType>(MulVal->getType())) + return nullptr; + assert(I.getOperand(0) == MulVal || I.getOperand(1) == MulVal); assert(I.getOperand(0) == OtherVal || I.getOperand(1) == OtherVal); - assert(isa<IntegerType>(MulVal->getType())); Instruction *MulInstr = cast<Instruction>(MulVal); assert(MulInstr->getOpcode() == Instruction::Mul); |