mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 11:13:28 +01:00
572717843f
attribute is not present. During my refactor in r251595 I changed the behavior of optimizeSqrt(), skipping the transformation if the function wasn't marked with unsafe-fp-math attribute. This fixed a bug, as confirmed by Sanjay (before the optimization was silently executed anyway), although it wasn't my primary aim. This commit adds a test to ensure the code doesn't break again. Reported by: Marcello Maggioni Discussed with: Sanjay Patel llvm-svn: 251747
26 lines
755 B
LLVM
26 lines
755 B
LLVM
; Check that we skip transformations if the attribute unsafe-fp-math
|
|
; is not set.
|
|
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
define float @mysqrt(float %x, float %y) #0 {
|
|
entry:
|
|
%x.addr = alloca float, align 4
|
|
%y.addr = alloca float, align 4
|
|
store float %x, float* %x.addr, align 4
|
|
store float %y, float* %y.addr, align 4
|
|
%0 = load float, float* %x.addr, align 4
|
|
%1 = load float, float* %x.addr, align 4
|
|
%mul = fmul fast float %0, %1
|
|
%2 = call float @llvm.sqrt.f32(float %mul)
|
|
ret float %2
|
|
}
|
|
|
|
declare float @llvm.sqrt.f32(float) #1
|
|
|
|
; CHECK: define float @mysqrt(float %x, float %y) {
|
|
; CHECK: entry:
|
|
; CHECK: %mul = fmul fast float %x, %x
|
|
; CHECK: %0 = call float @llvm.sqrt.f32(float %mul)
|
|
; CHECK: ret float %0
|
|
; CHECK: }
|