1 ; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,SI %s
2 ; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,VI %s
3 ; RUN: llc -march=amdgcn -mcpu=gfx900 -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX9 %s
5 ; GCN-LABEL: {{^}}test_fmin3_olt_0_f32:
6 ; GCN: buffer_load_dword [[REGC:v[0-9]+]]
7 ; GCN: buffer_load_dword [[REGB:v[0-9]+]]
8 ; GCN: buffer_load_dword [[REGA:v[0-9]+]]
9 ; GCN: v_min3_f32 [[RESULT:v[0-9]+]], [[REGC]], [[REGB]], [[REGA]]
10 ; GCN: buffer_store_dword [[RESULT]],
11 define amdgpu_kernel void @test_fmin3_olt_0_f32(float addrspace(1)* %out, float addrspace(1)* %aptr, float addrspace(1)* %bptr, float addrspace(1)* %cptr) #0 {
12 %a = load volatile float, float addrspace(1)* %aptr, align 4
13 %b = load volatile float, float addrspace(1)* %bptr, align 4
14 %c = load volatile float, float addrspace(1)* %cptr, align 4
15 %f0 = call float @llvm.minnum.f32(float %a, float %b)
16 %f1 = call float @llvm.minnum.f32(float %f0, float %c)
17 store float %f1, float addrspace(1)* %out, align 4
21 ; Commute operand of second fmin
22 ; GCN-LABEL: {{^}}test_fmin3_olt_1_f32:
23 ; GCN: buffer_load_dword [[REGB:v[0-9]+]]
24 ; GCN: buffer_load_dword [[REGA:v[0-9]+]]
25 ; GCN: buffer_load_dword [[REGC:v[0-9]+]]
26 ; GCN: v_min3_f32 [[RESULT:v[0-9]+]], [[REGC]], [[REGB]], [[REGA]]
27 ; GCN: buffer_store_dword [[RESULT]],
28 define amdgpu_kernel void @test_fmin3_olt_1_f32(float addrspace(1)* %out, float addrspace(1)* %aptr, float addrspace(1)* %bptr, float addrspace(1)* %cptr) #0 {
29 %a = load volatile float, float addrspace(1)* %aptr, align 4
30 %b = load volatile float, float addrspace(1)* %bptr, align 4
31 %c = load volatile float, float addrspace(1)* %cptr, align 4
32 %f0 = call float @llvm.minnum.f32(float %a, float %b)
33 %f1 = call float @llvm.minnum.f32(float %c, float %f0)
34 store float %f1, float addrspace(1)* %out, align 4
38 ; GCN-LABEL: {{^}}test_fmin3_olt_0_f16:
39 ; GCN: buffer_load_ushort [[REGC:v[0-9]+]]
40 ; GCN: buffer_load_ushort [[REGB:v[0-9]+]]
41 ; GCN: buffer_load_ushort [[REGA:v[0-9]+]]
43 ; SI: v_min3_f32 [[RESULT_F32:v[0-9]+]],
44 ; SI: v_cvt_f16_f32_e32 [[RESULT:v[0-9]+]], [[RESULT]]
47 ; VI: v_min_f16_e32 [[RESULT:v[0-9]+]],
49 ; GFX9: v_min3_f16 [[RESULT:v[0-9]+]], [[REGC]], [[REGB]], [[REGA]]
50 ; GCN: buffer_store_short [[RESULT]],
51 define amdgpu_kernel void @test_fmin3_olt_0_f16(half addrspace(1)* %out, half addrspace(1)* %aptr, half addrspace(1)* %bptr, half addrspace(1)* %cptr) #0 {
52 %a = load volatile half, half addrspace(1)* %aptr, align 2
53 %b = load volatile half, half addrspace(1)* %bptr, align 2
54 %c = load volatile half, half addrspace(1)* %cptr, align 2
55 %f0 = call half @llvm.minnum.f16(half %a, half %b)
56 %f1 = call half @llvm.minnum.f16(half %f0, half %c)
57 store half %f1, half addrspace(1)* %out, align 2
61 ; Commute operand of second fmin
62 ; GCN-LABEL: {{^}}test_fmin3_olt_1_f16:
63 ; GCN: buffer_load_ushort [[REGA:v[0-9]+]]
64 ; GCN: buffer_load_ushort [[REGB:v[0-9]+]]
65 ; GCN: buffer_load_ushort [[REGC:v[0-9]+]]
67 ; SI-DAG: v_cvt_f32_f16_e32 [[CVT_A:v[0-9]+]], [[REGA]]
68 ; SI-DAG: v_cvt_f32_f16_e32 [[CVT_B:v[0-9]+]], [[REGB]]
69 ; SI-DAG: v_cvt_f32_f16_e32 [[CVT_C:v[0-9]+]], [[REGC]]
70 ; SI: v_min3_f32 [[RESULT_F32:v[0-9]+]], [[CVT_C]], [[CVT_A]], [[CVT_B]]
71 ; SI: v_cvt_f16_f32_e32 [[RESULT:v[0-9]+]], [[RESULT_F32]]
74 ; VI: v_min_f16_e32 [[RESULT:v[0-9]+]],
76 ; GFX9: v_min3_f16 [[RESULT:v[0-9]+]], [[REGC]], [[REGA]], [[REGB]]
77 ; GCN: buffer_store_short [[RESULT]],
78 define amdgpu_kernel void @test_fmin3_olt_1_f16(half addrspace(1)* %out, half addrspace(1)* %aptr, half addrspace(1)* %bptr, half addrspace(1)* %cptr) #0 {
79 %a = load volatile half, half addrspace(1)* %aptr, align 2
80 %b = load volatile half, half addrspace(1)* %bptr, align 2
81 %c = load volatile half, half addrspace(1)* %cptr, align 2
82 %f0 = call half @llvm.minnum.f16(half %a, half %b)
83 %f1 = call half @llvm.minnum.f16(half %c, half %f0)
84 store half %f1, half addrspace(1)* %out, align 2
88 ; Checks whether the test passes; performMinMaxCombine() should not optimize vector patterns of min3
89 ; since there are no pack instructions for fmin3.
90 ; GCN-LABEL: {{^}}no_fmin3_v2f16:
92 ; SI: v_cvt_f16_f32_e32
94 ; SI-NEXT: v_min_f32_e32
99 ; VI-NEXT: v_min_f16_sdwa v4, v0, v1 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:WORD_1
100 ; VI-NEXT: v_min_f16_e32 v0, v0, v1
101 ; VI-NEXT: v_min_f16_sdwa v1, v2, v4 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_1 src1_sel:DWORD
102 ; VI-NEXT: v_min_f16_e32 v0, v2, v0
103 ; VI-NEXT: v_min_f16_sdwa v1, v1, v3 dst_sel:WORD_1 dst_unused:UNUSED_PAD src0_sel:DWORD src1_sel:WORD_1
104 ; VI-NEXT: v_min_f16_e32 v0, v0, v3
105 ; VI-NEXT: v_or_b32_sdwa v0, v0, v1 dst_sel:DWORD dst_unused:UNUSED_PAD src0_sel:WORD_0 src1_sel:DWORD
106 ; VI-NEXT: s_setpc_b64
109 ; GFX9-NEXT: v_pk_min_f16 v0, v0, v1
110 ; GFX9-NEXT: v_pk_min_f16 v0, v2, v0
111 ; GFX9-NEXT: v_pk_min_f16 v0, v0, v3
112 ; GFX9-NEXT: s_setpc_b64
113 define <2 x half> @no_fmin3_v2f16(<2 x half> %a, <2 x half> %b, <2 x half> %c, <2 x half> %d) #2 {
115 %min = call <2 x half> @llvm.minnum.v2f16(<2 x half> %a, <2 x half> %b)
116 %min1 = call <2 x half> @llvm.minnum.v2f16(<2 x half> %c, <2 x half> %min)
117 %res = call <2 x half> @llvm.minnum.v2f16(<2 x half> %min1, <2 x half> %d)
121 ; GCN-LABEL: {{^}}test_fmin3_olt_0_f64:
123 define amdgpu_kernel void @test_fmin3_olt_0_f64(double addrspace(1)* %out, double addrspace(1)* %aptr, double addrspace(1)* %bptr, double addrspace(1)* %cptr) #0 {
124 %a = load volatile double, double addrspace(1)* %aptr, align 4
125 %b = load volatile double, double addrspace(1)* %bptr, align 4
126 %c = load volatile double, double addrspace(1)* %cptr, align 4
127 %f0 = call double @llvm.minnum.f64(double %a, double %b)
128 %f1 = call double @llvm.minnum.f64(double %f0, double %c)
129 store double %f1, double addrspace(1)* %out, align 4
133 ; Commute operand of second fmin
134 ; GCN-LABEL: {{^}}test_fmin3_olt_1_f64:
136 define amdgpu_kernel void @test_fmin3_olt_1_f64(double addrspace(1)* %out, double addrspace(1)* %aptr, double addrspace(1)* %bptr, double addrspace(1)* %cptr) #0 {
137 %a = load volatile double, double addrspace(1)* %aptr, align 4
138 %b = load volatile double, double addrspace(1)* %bptr, align 4
139 %c = load volatile double, double addrspace(1)* %cptr, align 4
140 %f0 = call double @llvm.minnum.f64(double %a, double %b)
141 %f1 = call double @llvm.minnum.f64(double %c, double %f0)
142 store double %f1, double addrspace(1)* %out, align 4
146 declare i32 @llvm.amdgcn.workitem.id.x() #1
147 declare double @llvm.minnum.f64(double, double) #1
148 declare float @llvm.minnum.f32(float, float) #1
149 declare half @llvm.minnum.f16(half, half) #1
150 declare <2 x half> @llvm.minnum.v2f16(<2 x half>, <2 x half>)
152 attributes #0 = { nounwind }
153 attributes #1 = { nounwind readnone speculatable }
154 attributes #2 = { nounwind "no-nans-fp-math"="true" }