mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-21 03:53:04 +02:00
12 lines
391 B
LLVM
12 lines
391 B
LLVM
; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse41 -o %t -f
|
|
; RUN: grep xorps %t | count 1
|
|
|
|
; Test that when we don't -enable-unsafe-fp-math, we don't do the optimization
|
|
; -0 - (A - B) to (B - A) because A==B, -0 != 0
|
|
|
|
define float @negfp(float %a, float %b) {
|
|
entry:
|
|
%sub = sub float %a, %b ; <float> [#uses=1]
|
|
%neg = sub float -0.000000e+00, %sub ; <float> [#uses=1]
|
|
ret float %neg
|
|
} |