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
4 ; FUNC-LABEL: {{^}}fneg_f64:
6 define void @fneg_f64(double addrspace(1)* %out, double %in) {
7 %fneg = fsub double -0.000000e+00, %in
8 store double %fneg, double addrspace(1)* %out
12 ; FUNC-LABEL: {{^}}fneg_v2f64:
15 define void @fneg_v2f64(<2 x double> addrspace(1)* nocapture %out, <2 x double> %in) {
16 %fneg = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %in
17 store <2 x double> %fneg, <2 x double> addrspace(1)* %out
21 ; FUNC-LABEL: {{^}}fneg_v4f64:
31 define void @fneg_v4f64(<4 x double> addrspace(1)* nocapture %out, <4 x double> %in) {
32 %fneg = fsub <4 x double> <double -0.000000e+00, double -0.000000e+00, double -0.000000e+00, double -0.000000e+00>, %in
33 store <4 x double> %fneg, <4 x double> addrspace(1)* %out
37 ; DAGCombiner will transform:
38 ; (fneg (f64 bitcast (i64 a))) => (f64 bitcast (xor (i64 a), 0x80000000))
39 ; unless the target returns true for isNegFree()
41 ; FUNC-LABEL: {{^}}fneg_free_f64:
42 ; FIXME: Unnecessary copy to VGPRs
43 ; GCN: v_add_f64 {{v\[[0-9]+:[0-9]+\]}}, {{v\[[0-9]+:[0-9]+\]}}, -{{v\[[0-9]+:[0-9]+\]$}}
44 define void @fneg_free_f64(double addrspace(1)* %out, i64 %in) {
45 %bc = bitcast i64 %in to double
46 %fsub = fsub double 0.0, %bc
47 store double %fsub, double addrspace(1)* %out
51 ; GCN-LABEL: {{^}}fneg_fold_f64:
52 ; SI: s_load_dwordx2 [[NEG_VALUE:s\[[0-9]+:[0-9]+\]]], {{s\[[0-9]+:[0-9]+\]}}, 0xb
53 ; VI: s_load_dwordx2 [[NEG_VALUE:s\[[0-9]+:[0-9]+\]]], {{s\[[0-9]+:[0-9]+\]}}, 0x2c
55 ; GCN: v_mul_f64 {{v\[[0-9]+:[0-9]+\]}}, -[[NEG_VALUE]], [[NEG_VALUE]]
56 define void @fneg_fold_f64(double addrspace(1)* %out, double %in) {
57 %fsub = fsub double -0.0, %in
58 %fmul = fmul double %fsub, %in
59 store double %fmul, double addrspace(1)* %out