1 ; RUN: llc -march=amdgcn -mcpu=hawaii -verify-machineinstrs < %s | FileCheck -check-prefix=CI -check-prefix=GCN %s
2 ; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=GCN %s
3 ; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -check-prefix=CI -check-prefix=GCN %s
6 ; GCN-LABEL: {{^}}fdiv_f64:
7 ; GCN-DAG: buffer_load_dwordx2 [[NUM:v\[[0-9]+:[0-9]+\]]], off, {{s\[[0-9]+:[0-9]+\]}}, 0
8 ; GCN-DAG: buffer_load_dwordx2 [[DEN:v\[[0-9]+:[0-9]+\]]], off, {{s\[[0-9]+:[0-9]+\]}}, 0 offset:8
9 ; CI-DAG: v_div_scale_f64 [[SCALE0:v\[[0-9]+:[0-9]+\]]], {{s\[[0-9]+:[0-9]+\]}}, [[DEN]], [[DEN]], [[NUM]]
10 ; CI-DAG: v_div_scale_f64 [[SCALE1:v\[[0-9]+:[0-9]+\]]], vcc, [[NUM]], [[DEN]], [[NUM]]
12 ; Check for div_scale bug workaround on SI
13 ; SI-DAG: v_div_scale_f64 [[SCALE0:v\[[0-9]+:[0-9]+\]]], {{s\[[0-9]+:[0-9]+\]}}, [[DEN]], [[DEN]], [[NUM]]
14 ; SI-DAG: v_div_scale_f64 [[SCALE1:v\[[0-9]+:[0-9]+\]]], {{s\[[0-9]+:[0-9]+\]}}, [[NUM]], [[DEN]], [[NUM]]
16 ; GCN-DAG: v_rcp_f64_e32 [[RCP_SCALE0:v\[[0-9]+:[0-9]+\]]], [[SCALE0]]
18 ; SI-DAG: v_cmp_eq_u32_e32 vcc, {{v[0-9]+}}, {{v[0-9]+}}
19 ; SI-DAG: v_cmp_eq_u32_e64 [[CMP0:s\[[0-9]+:[0-9]+\]]], {{v[0-9]+}}, {{v[0-9]+}}
20 ; SI-DAG: s_xor_b64 vcc, [[CMP0]], vcc
22 ; GCN-DAG: v_fma_f64 [[FMA0:v\[[0-9]+:[0-9]+\]]], -[[SCALE0]], [[RCP_SCALE0]], 1.0
23 ; GCN-DAG: v_fma_f64 [[FMA1:v\[[0-9]+:[0-9]+\]]], [[RCP_SCALE0]], [[FMA0]], [[RCP_SCALE0]]
24 ; GCN-DAG: v_fma_f64 [[FMA2:v\[[0-9]+:[0-9]+\]]], -[[SCALE0]], [[FMA1]], 1.0
25 ; GCN-DAG: v_fma_f64 [[FMA3:v\[[0-9]+:[0-9]+\]]], [[FMA1]], [[FMA2]], [[FMA1]]
26 ; GCN-DAG: v_mul_f64 [[MUL:v\[[0-9]+:[0-9]+\]]], [[SCALE1]], [[FMA3]]
27 ; GCN-DAG: v_fma_f64 [[FMA4:v\[[0-9]+:[0-9]+\]]], -[[SCALE0]], [[MUL]], [[SCALE1]]
28 ; GCN: v_div_fmas_f64 [[FMAS:v\[[0-9]+:[0-9]+\]]], [[FMA4]], [[FMA3]], [[MUL]]
29 ; GCN: v_div_fixup_f64 [[RESULT:v\[[0-9]+:[0-9]+\]]], [[FMAS]], [[DEN]], [[NUM]]
30 ; GCN: buffer_store_dwordx2 [[RESULT]]
32 define amdgpu_kernel void @fdiv_f64(double addrspace(1)* %out, double addrspace(1)* %in) #0 {
33 %gep.1 = getelementptr double, double addrspace(1)* %in, i32 1
34 %num = load volatile double, double addrspace(1)* %in
35 %den = load volatile double, double addrspace(1)* %gep.1
36 %result = fdiv double %num, %den
37 store double %result, double addrspace(1)* %out
41 ; GCN-LABEL: {{^}}fdiv_f64_s_v:
42 define amdgpu_kernel void @fdiv_f64_s_v(double addrspace(1)* %out, double addrspace(1)* %in, double %num) #0 {
43 %den = load double, double addrspace(1)* %in
44 %result = fdiv double %num, %den
45 store double %result, double addrspace(1)* %out
49 ; GCN-LABEL: {{^}}fdiv_f64_v_s:
50 define amdgpu_kernel void @fdiv_f64_v_s(double addrspace(1)* %out, double addrspace(1)* %in, double %den) #0 {
51 %num = load double, double addrspace(1)* %in
52 %result = fdiv double %num, %den
53 store double %result, double addrspace(1)* %out
57 ; GCN-LABEL: {{^}}fdiv_f64_s_s:
58 define amdgpu_kernel void @fdiv_f64_s_s(double addrspace(1)* %out, double %num, double %den) #0 {
59 %result = fdiv double %num, %den
60 store double %result, double addrspace(1)* %out
64 ; GCN-LABEL: {{^}}v_fdiv_v2f64:
65 define amdgpu_kernel void @v_fdiv_v2f64(<2 x double> addrspace(1)* %out, <2 x double> addrspace(1)* %in) #0 {
66 %gep.1 = getelementptr <2 x double>, <2 x double> addrspace(1)* %in, i32 1
67 %num = load <2 x double>, <2 x double> addrspace(1)* %in
68 %den = load <2 x double>, <2 x double> addrspace(1)* %gep.1
69 %result = fdiv <2 x double> %num, %den
70 store <2 x double> %result, <2 x double> addrspace(1)* %out
74 ; GCN-LABEL: {{^}}s_fdiv_v2f64:
75 define amdgpu_kernel void @s_fdiv_v2f64(<2 x double> addrspace(1)* %out, <2 x double> %num, <2 x double> %den) {
76 %result = fdiv <2 x double> %num, %den
77 store <2 x double> %result, <2 x double> addrspace(1)* %out
81 ; GCN-LABEL: {{^}}v_fdiv_v4f64:
82 define amdgpu_kernel void @v_fdiv_v4f64(<4 x double> addrspace(1)* %out, <4 x double> addrspace(1)* %in) #0 {
83 %gep.1 = getelementptr <4 x double>, <4 x double> addrspace(1)* %in, i32 1
84 %num = load <4 x double>, <4 x double> addrspace(1)* %in
85 %den = load <4 x double>, <4 x double> addrspace(1)* %gep.1
86 %result = fdiv <4 x double> %num, %den
87 store <4 x double> %result, <4 x double> addrspace(1)* %out
91 ; GCN-LABEL: {{^}}s_fdiv_v4f64:
92 define amdgpu_kernel void @s_fdiv_v4f64(<4 x double> addrspace(1)* %out, <4 x double> %num, <4 x double> %den) #0 {
93 %result = fdiv <4 x double> %num, %den
94 store <4 x double> %result, <4 x double> addrspace(1)* %out
98 ; GCN-LABEL: {{^}}div_fast_2_x_pat_f64:
99 ; GCN: v_mul_f64 [[MUL:v\[[0-9]+:[0-9]+\]]], v{{\[[0-9]+:[0-9]+\]}}, 0.5
100 ; GCN: buffer_store_dwordx2 [[MUL]]
101 define amdgpu_kernel void @div_fast_2_x_pat_f64(double addrspace(1)* %out) #1 {
102 %x = load double, double addrspace(1)* undef
103 %rcp = fdiv fast double %x, 2.0
104 store double %rcp, double addrspace(1)* %out, align 4
108 ; GCN-LABEL: {{^}}div_fast_k_x_pat_f64:
109 ; GCN-DAG: s_mov_b32 s[[K_LO:[0-9]+]], 0x9999999a
110 ; GCN-DAG: s_mov_b32 s[[K_HI:[0-9]+]], 0x3fb99999
111 ; GCN: v_mul_f64 [[MUL:v\[[0-9]+:[0-9]+\]]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[}}[[K_LO]]:[[K_HI]]{{\]}}
112 ; GCN: buffer_store_dwordx2 [[MUL]]
113 define amdgpu_kernel void @div_fast_k_x_pat_f64(double addrspace(1)* %out) #1 {
114 %x = load double, double addrspace(1)* undef
115 %rcp = fdiv fast double %x, 10.0
116 store double %rcp, double addrspace(1)* %out, align 4
120 ; GCN-LABEL: {{^}}div_fast_neg_k_x_pat_f64:
121 ; GCN-DAG: s_mov_b32 s[[K_LO:[0-9]+]], 0x9999999a
122 ; GCN-DAG: s_mov_b32 s[[K_HI:[0-9]+]], 0xbfb99999
123 ; GCN: v_mul_f64 [[MUL:v\[[0-9]+:[0-9]+\]]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[}}[[K_LO]]:[[K_HI]]{{\]}}
124 ; GCN: buffer_store_dwordx2 [[MUL]]
125 define amdgpu_kernel void @div_fast_neg_k_x_pat_f64(double addrspace(1)* %out) #1 {
126 %x = load double, double addrspace(1)* undef
127 %rcp = fdiv fast double %x, -10.0
128 store double %rcp, double addrspace(1)* %out, align 4
132 attributes #0 = { nounwind }
133 attributes #1 = { nounwind "unsafe-fp-math"="true" }