From c8df2d1bdeb9f78c2efcdff0ffe55f7d21c227c6 Mon Sep 17 00:00:00 2001 From: Valery N Dmitriev Date: Tue, 26 Jan 2021 10:59:27 -0800 Subject: [PATCH] [NFC] Show instcombine powi simplifications drop FMF Differential Revision: https://reviews.llvm.org/D95454 --- llvm/test/Transforms/InstCombine/intrinsics.ll | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/llvm/test/Transforms/InstCombine/intrinsics.ll b/llvm/test/Transforms/InstCombine/intrinsics.ll index 157c14b..102aa54 100644 --- a/llvm/test/Transforms/InstCombine/intrinsics.ll +++ b/llvm/test/Transforms/InstCombine/intrinsics.ll @@ -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) { -- 2.7.4