diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp')
-rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp | 24 |
1 files changed, 6 insertions, 18 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp index d2fbcdd3991..b13d3edb9ad 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp @@ -1154,30 +1154,18 @@ Instruction *InstCombiner::visitSelectInst(SelectInst &SI) { } // See if we can fold the select into one of our operands. - if (SI.getType()->isIntOrIntVectorTy()) { + if (SI.getType()->isIntegerTy()) { if (Instruction *FoldI = FoldSelectIntoOp(SI, TrueVal, FalseVal)) return FoldI; Value *LHS, *RHS, *LHS2, *RHS2; - Instruction::CastOps CastOp; - SelectPatternFlavor SPF = matchSelectPattern(&SI, LHS, RHS, &CastOp); + SelectPatternFlavor SPF = matchSelectPattern(&SI, LHS, RHS); + // MAX(MAX(a, b), a) -> MAX(a, b) + // MIN(MIN(a, b), a) -> MIN(a, b) + // MAX(MIN(a, b), a) -> a + // MIN(MAX(a, b), a) -> a if (SPF) { - // Canonicalize so that type casts are outside select patterns. - if (LHS->getType()->getPrimitiveSizeInBits() != - SI.getType()->getPrimitiveSizeInBits()) { - CmpInst::Predicate Pred = getICmpPredicateForMinMax(SPF); - Value *Cmp = Builder->CreateICmp(Pred, LHS, RHS); - Value *NewSI = Builder->CreateCast(CastOp, - Builder->CreateSelect(Cmp, LHS, RHS), - SI.getType()); - return ReplaceInstUsesWith(SI, NewSI); - } - - // MAX(MAX(a, b), a) -> MAX(a, b) - // MIN(MIN(a, b), a) -> MIN(a, b) - // MAX(MIN(a, b), a) -> a - // MIN(MAX(a, b), a) -> a if (SelectPatternFlavor SPF2 = matchSelectPattern(LHS, LHS2, RHS2)) if (Instruction *R = FoldSPFofSPF(cast<Instruction>(LHS),SPF2,LHS2,RHS2, SI, SPF, RHS)) |