1*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -enable-unsafe-fp-math -mtriple=x86_64-unknown-unknown -mcpu=corei7 | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker; Make sure that vectors get the same benefits as scalars when using unsafe-fp-math. 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker; Subtracting zero is free. 6*9880d681SAndroid Build Coastguard Workerdefine <4 x float> @vec_fsub_zero(<4 x float> %x) { 7*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: vec_fsub_zero: 8*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: subps 9*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: xorps 10*9880d681SAndroid Build Coastguard Worker; CHECK: retq 11*9880d681SAndroid Build Coastguard Worker %sub = fsub <4 x float> %x, zeroinitializer 12*9880d681SAndroid Build Coastguard Worker ret <4 x float> %sub 13*9880d681SAndroid Build Coastguard Worker} 14*9880d681SAndroid Build Coastguard Worker 15*9880d681SAndroid Build Coastguard Worker; Negating doesn't require subtraction. 16*9880d681SAndroid Build Coastguard Workerdefine <4 x float> @vec_fneg(<4 x float> %x) { 17*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: vec_fneg: 18*9880d681SAndroid Build Coastguard Worker; CHECK: xorps {{.*}}LCP{{.*}}, %xmm0 19*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: subps 20*9880d681SAndroid Build Coastguard Worker; CHECK-NEXT: retq 21*9880d681SAndroid Build Coastguard Worker %sub = fsub <4 x float> zeroinitializer, %x 22*9880d681SAndroid Build Coastguard Worker ret <4 x float> %sub 23*9880d681SAndroid Build Coastguard Worker} 24