1 ; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
2 ; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
3 ; RUN: llc -amdgpu-scalarize-global-loads=false -march=r600 -mcpu=redwood < %s | FileCheck -check-prefix=R600 -check-prefix=FUNC %s
5 ; FUNC-LABEL: {{^}}v_fsub_f32:
6 ; SI: v_sub_f32_e32 {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}
7 define amdgpu_kernel void @v_fsub_f32(float addrspace(1)* %out, float addrspace(1)* %in) {
8 %b_ptr = getelementptr float, float addrspace(1)* %in, i32 1
9 %a = load float, float addrspace(1)* %in, align 4
10 %b = load float, float addrspace(1)* %b_ptr, align 4
11 %result = fsub float %a, %b
12 store float %result, float addrspace(1)* %out, align 4
16 ; FUNC-LABEL: {{^}}s_fsub_f32:
17 ; R600: ADD {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[2].Z, -KC0[2].W
19 ; SI: v_sub_f32_e32 {{v[0-9]+}}, {{s[0-9]+}}, {{v[0-9]+}}
20 define amdgpu_kernel void @s_fsub_f32(float addrspace(1)* %out, float %a, float %b) {
21 %sub = fsub float %a, %b
22 store float %sub, float addrspace(1)* %out, align 4
26 ; FUNC-LABEL: {{^}}fsub_v2f32:
27 ; R600-DAG: ADD {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[3].X, -KC0[3].Z
28 ; R600-DAG: ADD {{\** *}}T{{[0-9]+\.[XYZW]}}, KC0[2].W, -KC0[3].Y
30 ; SI: v_subrev_f32_e32 {{v[0-9]+}}, {{s[0-9]+}}, {{v[0-9]+}}
31 ; SI: v_subrev_f32_e32 {{v[0-9]+}}, {{s[0-9]+}}, {{v[0-9]+}}
32 define amdgpu_kernel void @fsub_v2f32(<2 x float> addrspace(1)* %out, <2 x float> %a, <2 x float> %b) {
33 %sub = fsub <2 x float> %a, %b
34 store <2 x float> %sub, <2 x float> addrspace(1)* %out, align 8
38 ; FUNC-LABEL: {{^}}v_fsub_v4f32:
39 ; R600: ADD {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW], -T[0-9]+\.[XYZW]}}
40 ; R600: ADD {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW], -T[0-9]+\.[XYZW]}}
41 ; R600: ADD {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW], -T[0-9]+\.[XYZW]}}
42 ; R600: ADD {{\** *}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW], -T[0-9]+\.[XYZW]}}
44 ; SI: v_sub_f32_e32 {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}
45 ; SI: v_sub_f32_e32 {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}
46 ; SI: v_sub_f32_e32 {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}
47 ; SI: v_sub_f32_e32 {{v[0-9]+}}, {{v[0-9]+}}, {{v[0-9]+}}
48 define amdgpu_kernel void @v_fsub_v4f32(<4 x float> addrspace(1)* %out, <4 x float> addrspace(1)* %in) {
49 %b_ptr = getelementptr <4 x float>, <4 x float> addrspace(1)* %in, i32 1
50 %a = load <4 x float>, <4 x float> addrspace(1)* %in, align 16
51 %b = load <4 x float>, <4 x float> addrspace(1)* %b_ptr, align 16
52 %result = fsub <4 x float> %a, %b
53 store <4 x float> %result, <4 x float> addrspace(1)* %out, align 16
57 ; FUNC-LABEL: {{^}}s_fsub_v4f32:
58 ; SI: v_subrev_f32_e32 {{v[0-9]+}}, {{s[0-9]+}}, {{v[0-9]+}}
59 ; SI: v_subrev_f32_e32 {{v[0-9]+}}, {{s[0-9]+}}, {{v[0-9]+}}
60 ; SI: v_subrev_f32_e32 {{v[0-9]+}}, {{s[0-9]+}}, {{v[0-9]+}}
61 ; SI: v_subrev_f32_e32 {{v[0-9]+}}, {{s[0-9]+}}, {{v[0-9]+}}
63 define amdgpu_kernel void @s_fsub_v4f32(<4 x float> addrspace(1)* %out, <4 x float> %a, <4 x float> %b) {
64 %result = fsub <4 x float> %a, %b
65 store <4 x float> %result, <4 x float> addrspace(1)* %out, align 16
69 ; FUNC-LABEL: {{^}}v_fneg_fsub_f32:
70 ; SI: v_sub_f32_e32 [[SUB:v[0-9]+]], {{v[0-9]+}}, {{v[0-9]+}}
71 ; SI: v_xor_b32_e32 v{{[0-9]+}}, 0x80000000, [[SUB]]
72 define amdgpu_kernel void @v_fneg_fsub_f32(float addrspace(1)* %out, float addrspace(1)* %in) {
73 %b_ptr = getelementptr float, float addrspace(1)* %in, i32 1
74 %a = load float, float addrspace(1)* %in, align 4
75 %b = load float, float addrspace(1)* %b_ptr, align 4
76 %result = fsub float %a, %b
77 %neg.result = fsub float -0.0, %result
78 store float %neg.result, float addrspace(1)* %out, align 4
82 ; FUNC-LABEL: {{^}}v_fneg_fsub_nsz_f32:
83 ; SI: v_sub_f32_e32 [[SUB:v[0-9]+]], {{v[0-9]+}}, {{v[0-9]+}}
85 define amdgpu_kernel void @v_fneg_fsub_nsz_f32(float addrspace(1)* %out, float addrspace(1)* %in) {
86 %b_ptr = getelementptr float, float addrspace(1)* %in, i32 1
87 %a = load float, float addrspace(1)* %in, align 4
88 %b = load float, float addrspace(1)* %b_ptr, align 4
89 %result = fsub nsz float %a, %b
90 %neg.result = fsub float -0.0, %result
91 store float %neg.result, float addrspace(1)* %out, align 4
95 ; FUNC-LABEL: {{^}}v_fneg_fsub_nsz_attribute_f32:
96 ; SI: v_sub_f32_e32 [[SUB:v[0-9]+]], {{v[0-9]+}}, {{v[0-9]+}}
98 define amdgpu_kernel void @v_fneg_fsub_nsz_attribute_f32(float addrspace(1)* %out, float addrspace(1)* %in) #0 {
99 %b_ptr = getelementptr float, float addrspace(1)* %in, i32 1
100 %a = load float, float addrspace(1)* %in, align 4
101 %b = load float, float addrspace(1)* %b_ptr, align 4
102 %result = fsub float %a, %b
103 %neg.result = fsub float -0.0, %result
104 store float %neg.result, float addrspace(1)* %out, align 4
108 ; For some reason the attribute has a string "true" or "false", so
109 ; make sure it is disabled and the fneg is not folded if it is not
111 ; FUNC-LABEL: {{^}}v_fneg_fsub_nsz_false_attribute_f32:
112 ; SI: v_sub_f32_e32 [[SUB:v[0-9]+]], {{v[0-9]+}}, {{v[0-9]+}}
113 ; SI: v_xor_b32_e32 v{{[0-9]+}}, 0x80000000, [[SUB]]
114 define amdgpu_kernel void @v_fneg_fsub_nsz_false_attribute_f32(float addrspace(1)* %out, float addrspace(1)* %in) #1 {
115 %b_ptr = getelementptr float, float addrspace(1)* %in, i32 1
116 %a = load float, float addrspace(1)* %in, align 4
117 %b = load float, float addrspace(1)* %b_ptr, align 4
118 %result = fsub float %a, %b
119 %neg.result = fsub float -0.0, %result
120 store float %neg.result, float addrspace(1)* %out, align 4
124 ; FUNC-LABEL: {{^}}v_fsub_0_nsz_attribute_f32:
126 define amdgpu_kernel void @v_fsub_0_nsz_attribute_f32(float addrspace(1)* %out, float addrspace(1)* %in) #0 {
127 %a = load float, float addrspace(1)* %in, align 4
128 %result = fsub float %a, 0.0
129 store float %result, float addrspace(1)* %out, align 4
133 attributes #0 = { nounwind "no-signed-zeros-fp-math"="true" }
134 attributes #1 = { nounwind "no-signed-zeros-fp-math"="false" }