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[NFC] Show instcombine powi simplifications drop FMF 

Differential Revision: https://reviews.llvm.org/D95454
This commit is contained in:
Valery N Dmitriev 2021-01-26 10:59:27 -08:00
parent 74784a5aa4
commit c8df2d1bde
1 changed files with 10 additions and 8 deletions
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18
llvm/test/Transforms/InstCombine/intrinsics.ll
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@ -1,4 +1,4 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function powi
; RUN: opt -instcombine -S < %s | FileCheck %s
declare double @llvm.powi.f64(double, i32) nounwind readonly
@ -21,17 +21,19 @@ declare double @llvm.rint.f64(double %Val) nounwind readonly
declare double @llvm.nearbyint.f64(double %Val) nounwind readonly
define void @powi(double %V, double *%P) {
%A = tail call double @llvm.powi.f64(double %V, i32 -1) nounwind
; CHECK-LABEL: @powi(
; CHECK-NEXT: [[A:%.*]] = fdiv double 1.000000e+00, [[V:%.*]]
; CHECK-NEXT: store volatile double [[A]], double* [[P:%.*]], align 8
; CHECK-NEXT: [[D:%.*]] = fmul double [[V]], [[V]]
; CHECK-NEXT: store volatile double [[D]], double* [[P]], align 8
; CHECK-NEXT: ret void
;
%A = tail call fast double @llvm.powi.f64(double %V, i32 -1) nounwind
store volatile double %A, double* %P
%D = tail call double @llvm.powi.f64(double %V, i32 2) nounwind
%D = tail call nnan double @llvm.powi.f64(double %V, i32 2) nounwind
store volatile double %D, double* %P
ret void
; CHECK-LABEL: @powi(
; CHECK: %A = fdiv double 1.0{{.*}}, %V
; CHECK: store volatile double %A,
; CHECK: %D = fmul double %V, %V
; CHECK: store volatile double %D
}
define i32 @cttz(i32 %a) {