diff options
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp | 6 | ||||
| -rw-r--r-- | llvm/test/Transforms/InstCombine/vector-casts.ll | 5 |
2 files changed, 2 insertions, 9 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp b/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp index 636c04f9cd5..4b5e53cab10 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp @@ -991,12 +991,6 @@ bool InstCombiner::shouldOptimizeCast(CastInst *CI) { if (isEliminableCastPair(PrecedingCI, CI)) return false; - // If this is a vector sext from a compare, then we don't want to break the - // idiom where each element of the extended vector is either zero or all ones. - if (CI->getOpcode() == Instruction::SExt && - isa<CmpInst>(CastSrc) && CI->getDestTy()->isVectorTy()) - return false; - return true; } diff --git a/llvm/test/Transforms/InstCombine/vector-casts.ll b/llvm/test/Transforms/InstCombine/vector-casts.ll index 4541b307365..3575ffc0c40 100644 --- a/llvm/test/Transforms/InstCombine/vector-casts.ll +++ b/llvm/test/Transforms/InstCombine/vector-casts.ll @@ -96,10 +96,9 @@ define <2 x i64> @test6(<4 x float> %a, <4 x float> %b) { define <2 x i64> @test7(<4 x float> %a, <4 x float> %b) { ; CHECK-LABEL: @test7( ; CHECK-NEXT: [[CMP:%.*]] = fcmp ult <4 x float> [[A:%.*]], zeroinitializer -; CHECK-NEXT: [[SEXT:%.*]] = sext <4 x i1> [[CMP]] to <4 x i32> ; CHECK-NEXT: [[CMP4:%.*]] = fcmp ult <4 x float> [[B:%.*]], zeroinitializer -; CHECK-NEXT: [[SEXT5:%.*]] = sext <4 x i1> [[CMP4]] to <4 x i32> -; CHECK-NEXT: [[AND:%.*]] = xor <4 x i32> [[SEXT]], [[SEXT5]] +; CHECK-NEXT: [[AND1:%.*]] = xor <4 x i1> [[CMP]], [[CMP4]] +; CHECK-NEXT: [[AND:%.*]] = sext <4 x i1> [[AND1]] to <4 x i32> ; CHECK-NEXT: [[CONV:%.*]] = bitcast <4 x i32> [[AND]] to <2 x i64> ; CHECK-NEXT: ret <2 x i64> [[CONV]] ; |
