25 lines
802 B
LLVM
25 lines
802 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc < %s -enable-unsafe-fp-math -enable-no-signed-zeros-fp-math -mtriple=x86_64-unknown-unknown | FileCheck %s
|
|
|
|
; Make sure that vectors get the same benefits as scalars when using unsafe-fp-math.
|
|
|
|
; Subtracting zero is free.
|
|
define <4 x float> @vec_fsub_zero(<4 x float> %x) {
|
|
; CHECK-LABEL: vec_fsub_zero:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: retq
|
|
%sub = fsub <4 x float> %x, zeroinitializer
|
|
ret <4 x float> %sub
|
|
}
|
|
|
|
; Negating doesn't require subtraction.
|
|
define <4 x float> @vec_fneg(<4 x float> %x) {
|
|
; CHECK-LABEL: vec_fneg:
|
|
; CHECK: # %bb.0:
|
|
; CHECK-NEXT: xorps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0
|
|
; CHECK-NEXT: retq
|
|
%sub = fsub <4 x float> zeroinitializer, %x
|
|
ret <4 x float> %sub
|
|
}
|
|
|