1 ; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=fiji -amdgpu-spill-sgpr-to-smem=0 -verify-machineinstrs < %s | FileCheck -check-prefix=TOSGPR -check-prefix=ALL %s
2 ; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=fiji -amdgpu-spill-sgpr-to-smem=1 -verify-machineinstrs < %s | FileCheck -check-prefix=TOSMEM -check-prefix=ALL %s
4 ; If spilling to smem, additional registers are used for the resource
7 ; ALL-LABEL: {{^}}max_9_sgprs:
10 ; ALL: NumSGPRsForWavesPerEU: 9
11 define amdgpu_kernel void @max_9_sgprs(i32 addrspace(1)* %out1,
13 i32 addrspace(1)* %out2,
14 i32 addrspace(1)* %out3,
15 i32 addrspace(1)* %out4,
16 i32 addrspace(1)* %out5,
17 i32 %one, i32 %two, i32 %three, i32 %four, i32 %five) #0 {
18 store i32 %one, i32 addrspace(1)* %out1
19 store i32 %two, i32 addrspace(1)* %out2
20 store i32 %three, i32 addrspace(1)* %out3
21 store i32 %four, i32 addrspace(1)* %out4
22 store i32 %five, i32 addrspace(1)* %out5
27 ; scratch wave offset: 1
31 ; flat scratch init: 2
32 ; ---------------------
37 ; Because we can't handle re-using the last few input registers as the
38 ; special vcc etc. registers (as well as decide to not use the unused
39 ; features when the number of registers is frozen), this ends up using
42 ; XALL-LABEL: {{^}}max_12_sgprs_14_input_sgprs:
43 ; XTOSGPR: SGPRBlocks: 1
44 ; XTOSGPR: NumSGPRsForWavesPerEU: 16
46 ; XTOSMEM: s_mov_b64 s[10:11], s[2:3]
47 ; XTOSMEM: s_mov_b64 s[8:9], s[0:1]
48 ; XTOSMEM: s_mov_b32 s7, s13
50 ; XTOSMEM: SGPRBlocks: 1
51 ; XTOSMEM: NumSGPRsForWavesPerEU: 16
53 ; This test case is disabled: When calculating the spillslot addresses AMDGPU
54 ; creates an extra vreg to save/restore m0 which in a point of maximum register
55 ; pressure would trigger an endless loop; the compiler aborts earlier with
56 ; "Incomplete scavenging after 2nd pass" in practice.
57 ;define amdgpu_kernel void @max_12_sgprs_14_input_sgprs(i32 addrspace(1)* %out1,
58 ; i32 addrspace(1)* %out2,
59 ; i32 addrspace(1)* %out3,
60 ; i32 addrspace(1)* %out4,
61 ; i32 %one, i32 %two, i32 %three, i32 %four) #2 {
62 ; %x.0 = call i32 @llvm.amdgcn.workgroup.id.x()
63 ; %x.1 = call i32 @llvm.amdgcn.workgroup.id.y()
64 ; %x.2 = call i32 @llvm.amdgcn.workgroup.id.z()
65 ; %x.3 = call i64 @llvm.amdgcn.dispatch.id()
66 ; %x.4 = call i8 addrspace(2)* @llvm.amdgcn.dispatch.ptr()
67 ; %x.5 = call i8 addrspace(2)* @llvm.amdgcn.queue.ptr()
68 ; store volatile i32 0, i32* undef
72 ; store volatile i32 %x.0, i32 addrspace(1)* undef
73 ; store volatile i32 %x.0, i32 addrspace(1)* undef
74 ; store volatile i32 %x.0, i32 addrspace(1)* undef
75 ; store volatile i64 %x.3, i64 addrspace(1)* undef
76 ; store volatile i8 addrspace(2)* %x.4, i8 addrspace(2)* addrspace(1)* undef
77 ; store volatile i8 addrspace(2)* %x.5, i8 addrspace(2)* addrspace(1)* undef
79 ; store i32 %one, i32 addrspace(1)* %out1
80 ; store i32 %two, i32 addrspace(1)* %out2
81 ; store i32 %three, i32 addrspace(1)* %out3
82 ; store i32 %four, i32 addrspace(1)* %out4
86 ; The following test is commented out for now; http://llvm.org/PR31230
87 ; XALL-LABEL: max_12_sgprs_12_input_sgprs{{$}}
88 ; ; Make sure copies for input buffer are not clobbered. This requires
89 ; ; swapping the order the registers are copied from what normally
92 ; XTOSMEM: s_mov_b32 s5, s11
93 ; XTOSMEM: s_add_u32 m0, s5,
94 ; XTOSMEM: s_buffer_store_dword vcc_lo, s[0:3], m0
97 ; XALL: NumSGPRsForWavesPerEU: 18
98 ;define amdgpu_kernel void @max_12_sgprs_12_input_sgprs(i32 addrspace(1)* %out1,
99 ; i32 addrspace(1)* %out2,
100 ; i32 addrspace(1)* %out3,
101 ; i32 addrspace(1)* %out4,
102 ; i32 %one, i32 %two, i32 %three, i32 %four) #2 {
103 ; store volatile i32 0, i32* undef
104 ; %x.0 = call i32 @llvm.amdgcn.workgroup.id.x()
105 ; store volatile i32 %x.0, i32 addrspace(1)* undef
106 ; %x.1 = call i32 @llvm.amdgcn.workgroup.id.y()
107 ; store volatile i32 %x.0, i32 addrspace(1)* undef
108 ; %x.2 = call i32 @llvm.amdgcn.workgroup.id.z()
109 ; store volatile i32 %x.0, i32 addrspace(1)* undef
110 ; %x.3 = call i64 @llvm.amdgcn.dispatch.id()
111 ; store volatile i64 %x.3, i64 addrspace(1)* undef
112 ; %x.4 = call i8 addrspace(2)* @llvm.amdgcn.dispatch.ptr()
113 ; store volatile i8 addrspace(2)* %x.4, i8 addrspace(2)* addrspace(1)* undef
115 ; store i32 %one, i32 addrspace(1)* %out1
116 ; store i32 %two, i32 addrspace(1)* %out2
117 ; store i32 %three, i32 addrspace(1)* %out3
118 ; store i32 %four, i32 addrspace(1)* %out4
122 declare i32 @llvm.amdgcn.workgroup.id.x() #1
123 declare i32 @llvm.amdgcn.workgroup.id.y() #1
124 declare i32 @llvm.amdgcn.workgroup.id.z() #1
125 declare i64 @llvm.amdgcn.dispatch.id() #1
126 declare i8 addrspace(2)* @llvm.amdgcn.dispatch.ptr() #1
127 declare i8 addrspace(2)* @llvm.amdgcn.queue.ptr() #1
129 attributes #0 = { nounwind "amdgpu-num-sgpr"="14" }
130 attributes #1 = { nounwind readnone }
131 attributes #2 = { nounwind "amdgpu-num-sgpr"="12" }
132 attributes #3 = { nounwind "amdgpu-num-sgpr"="11" }