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-rw-r--r--llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp24
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))
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