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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py2; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s3 4; Make sure that vectors get the same benefits as scalars when using unsafe-fp-math.5 6; Subtracting zero is free.7define <4 x float> @vec_fsub_zero(<4 x float> %x) {8; CHECK-LABEL: vec_fsub_zero:9; CHECK: # %bb.0:10; CHECK-NEXT: retq11 %sub = fsub <4 x float> %x, zeroinitializer12 ret <4 x float> %sub13}14 15; Negating doesn't require subtraction.16define <4 x float> @vec_fneg(<4 x float> %x) {17; CHECK-LABEL: vec_fneg:18; CHECK: # %bb.0:19; CHECK-NEXT: xorps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm020; CHECK-NEXT: retq21 %sub = fsub nsz <4 x float> zeroinitializer, %x22 ret <4 x float> %sub23}24 25