// Widening/narrowing never change sign.
return cannotBeOrderedLessThanZeroImpl(I->getOperand(0), TLI, SignBitOnly,
Depth + 1);
+ case Instruction::ExtractElement:
+ // Look through extract element. At the moment we keep this simple and skip
+ // tracking the specific element. But at least we might find information
+ // valid for all elements of the vector.
+ return cannotBeOrderedLessThanZeroImpl(I->getOperand(0), TLI, SignBitOnly,
+ Depth + 1);
case Instruction::Call:
const auto *CI = cast<CallInst>(I);
Intrinsic::ID IID = getIntrinsicForCallSite(CI, TLI);
%fabs = call float @llvm.fabs.f32(float %sqrt)
ret float %fabs
}
+
+define float @fabs_select_positive_constants_vector_extract(i32 %c) {
+; CHECK-LABEL: @fabs_select_positive_constants_vector_extract(
+; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[C:%.*]], 0
+; CHECK-NEXT: [[SELECT:%.*]] = select i1 [[CMP]], <2 x float> <float 1.000000e+00, float 1.000000e+00>, <2 x float> <float 2.000000e+00, float 2.000000e+00>
+; CHECK-NEXT: [[EXTRACT:%.*]] = extractelement <2 x float> [[SELECT]], i32 0
+; CHECK-NEXT: ret float [[EXTRACT]]
+;
+ %cmp = icmp eq i32 %c, 0
+ %select = select i1 %cmp, <2 x float> <float 1.0, float 1.0>, <2 x float> <float 2.0, float 2.0>
+ %extract = extractelement <2 x float> %select, i32 0
+ %fabs = call float @llvm.fabs.f32(float %extract)
+ ret float %fabs
+}