1 ; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=GCN -check-prefix=FUNC %s
2 ; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=VI -check-prefix=GCN -check-prefix=FUNC %s
3 ; RUN: llc -march=r600 -mcpu=redwood < %s | FileCheck -check-prefix=R600 -check-prefix=FUNC %s
5 ; FUNC-LABEL: {{^}}fneg_f32:
9 define void @fneg_f32(float addrspace(1)* %out, float %in) {
10 %fneg = fsub float -0.000000e+00, %in
11 store float %fneg, float addrspace(1)* %out
15 ; FUNC-LABEL: {{^}}fneg_v2f32:
21 define void @fneg_v2f32(<2 x float> addrspace(1)* nocapture %out, <2 x float> %in) {
22 %fneg = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, %in
23 store <2 x float> %fneg, <2 x float> addrspace(1)* %out
27 ; FUNC-LABEL: {{^}}fneg_v4f32:
37 define void @fneg_v4f32(<4 x float> addrspace(1)* nocapture %out, <4 x float> %in) {
38 %fneg = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %in
39 store <4 x float> %fneg, <4 x float> addrspace(1)* %out
43 ; DAGCombiner will transform:
44 ; (fneg (f32 bitcast (i32 a))) => (f32 bitcast (xor (i32 a), 0x80000000))
45 ; unless the target returns true for isNegFree()
47 ; FUNC-LABEL: {{^}}fneg_free_f32:
51 ; XXX: We could use v_add_f32_e64 with the negate bit here instead.
52 ; GCN: v_sub_f32_e64 v{{[0-9]}}, 0, s{{[0-9]+$}}
53 define void @fneg_free_f32(float addrspace(1)* %out, i32 %in) {
54 %bc = bitcast i32 %in to float
55 %fsub = fsub float 0.0, %bc
56 store float %fsub, float addrspace(1)* %out
60 ; FUNC-LABEL: {{^}}fneg_fold_f32:
61 ; SI: s_load_dword [[NEG_VALUE:s[0-9]+]], s[{{[0-9]+:[0-9]+}}], 0xb
62 ; VI: s_load_dword [[NEG_VALUE:s[0-9]+]], s[{{[0-9]+:[0-9]+}}], 0x2c
64 ; GCN: v_mul_f32_e64 v{{[0-9]+}}, -[[NEG_VALUE]], [[NEG_VALUE]]
65 define void @fneg_fold_f32(float addrspace(1)* %out, float %in) {
66 %fsub = fsub float -0.0, %in
67 %fmul = fmul float %fsub, %in
68 store float %fmul, float addrspace(1)* %out