mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-03 17:31:50 +00:00
7cb1b5f5bf
llc using the host cpu features and *waning* on unknown features is probably not a good thing :-( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189144 91177308-0d34-0410-b5e6-96231b3b80d8
13 lines
382 B
LLVM
13 lines
382 B
LLVM
; RUN: llc < %s -march=x86 -mattr=+sse4.1 -o %t
|
|
; 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 = fsub float %a, %b ; <float> [#uses=1]
|
|
%neg = fsub float -0.000000e+00, %sub ; <float> [#uses=1]
|
|
ret float %neg
|
|
}
|