1 ; RUN: llc -march=amdgcn -mcpu=hawaii -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN -check-prefix=CI %s
2 ; RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN -check-prefix=GFX9 %s
4 ; GCN-LABEL: {{^}}callee_no_stack:
7 ; GCN-NEXT: s_setpc_b64
8 define void @callee_no_stack() #0 {
12 ; GCN-LABEL: {{^}}callee_no_stack_no_fp_elim:
15 ; GCN-NEXT: s_setpc_b64
16 define void @callee_no_stack_no_fp_elim() #1 {
20 ; Requires frame pointer for access to local regular object.
22 ; GCN-LABEL: {{^}}callee_with_stack:
25 ; GCN-NEXT: s_mov_b32 s5, s32
26 ; GCN-NEXT: v_mov_b32_e32 v0, 0{{$}}
27 ; GCN-NEXT: buffer_store_dword v0, off, s[0:3], s5 offset:4{{$}}
29 ; GCN-NEXT: s_setpc_b64
30 define void @callee_with_stack() #0 {
31 %alloca = alloca i32, addrspace(5)
32 store volatile i32 0, i32 addrspace(5)* %alloca
36 ; GCN-LABEL: {{^}}callee_with_stack_and_call:
39 ; GCN: s_mov_b32 s5, s32
40 ; GCN: buffer_store_dword v32, off, s[0:3], s5 offset:8
42 ; GCN-DAG: v_writelane_b32 v32, s33,
43 ; GCN-DAG: v_writelane_b32 v32, s34,
44 ; GCN-DAG: v_writelane_b32 v32, s35,
45 ; GCN-DAG: s_add_u32 s32, s32, 0x400{{$}}
46 ; GCN-DAG: v_mov_b32_e32 v0, 0{{$}}
47 ; GCN-DAG: buffer_store_dword v0, off, s[0:3], s5 offset:4{{$}}
48 ; GCN-DAG: s_mov_b32 s33, s5
52 ; GCN: s_mov_b32 s5, s33
53 ; GCN-DAG: v_readlane_b32 s35,
54 ; GCN-DAG: v_readlane_b32 s34,
55 ; GCN-DAG: v_readlane_b32 s33,
56 ; GCN: buffer_load_dword v32, off, s[0:3], s5 offset:8
58 ; GCN-NEXT: s_setpc_b64
59 define void @callee_with_stack_and_call() #0 {
60 %alloca = alloca i32, addrspace(5)
61 store volatile i32 0, i32 addrspace(5)* %alloca
62 call void @external_void_func_void()
66 ; Should be able to copy incoming stack pointer directly to inner
67 ; call's stack pointer argument.
69 ; There is stack usage only because of the need to evict a VGPR for
72 ; GCN-LABEL: {{^}}callee_no_stack_with_call:
74 ; GCN: s_mov_b32 s5, s32
75 ; GCN: buffer_store_dword v32, off, s[0:3], s5 offset:4
76 ; GCN-DAG: v_writelane_b32 v32, s33, 0
77 ; GCN-DAG: v_writelane_b32 v32, s34, 1
78 ; GCN: s_mov_b32 s33, s5
80 ; GCN: s_mov_b32 s5, s33
82 ; GCN-DAG: v_readlane_b32 s34, v32, 1
83 ; GCN-DAG: v_readlane_b32 s33, v32, 0
84 ; GCN: buffer_load_dword v32, off, s[0:3], s5 offset:4
85 ; GCN: s_sub_u32 s32, s32, 0x400
88 define void @callee_no_stack_with_call() #0 {
89 call void @external_void_func_void()
93 declare void @external_void_func_void() #0
95 ; Make sure if a CSR vgpr is used for SGPR spilling, it is saved and restored
96 ; GCN-LABEL: {{^}}callee_func_sgpr_spill_no_calls:
97 ; GCN: buffer_store_dword v32, off, s[0:3], s5 offset:4 ; 4-byte Folded Spill
98 ; GCN: v_writelane_b32 v32
100 ; GCN: v_readlane_b32 s{{[0-9]+}}, v32
101 ; GCN: buffer_load_dword v32, off, s[0:3], s5 offset:4 ; 4-byte Folded Reload
102 ; GCN-NEXT: s_waitcnt
103 ; GCN-NEXT: s_setpc_b64
104 define void @callee_func_sgpr_spill_no_calls(i32 %in) #0 {
105 call void asm sideeffect "", "~{v0},~{v1},~{v2},~{v3},~{v4},~{v5},~{v6},~{v7}"() #0
106 call void asm sideeffect "", "~{v8},~{v9},~{v10},~{v11},~{v12},~{v13},~{v14},~{v15}"() #0
107 call void asm sideeffect "", "~{v16},~{v17},~{v18},~{v19},~{v20},~{v21},~{v22},~{v23}"() #0
108 call void asm sideeffect "", "~{v24},~{v25},~{v26},~{v27},~{v28},~{v29},~{v30},~{v31}"() #0
110 %wide.sgpr0 = call <16 x i32> asm sideeffect "; def $0", "=s" () #0
111 %wide.sgpr1 = call <16 x i32> asm sideeffect "; def $0", "=s" () #0
112 %wide.sgpr2 = call <16 x i32> asm sideeffect "; def $0", "=s" () #0
113 %wide.sgpr5 = call <16 x i32> asm sideeffect "; def $0", "=s" () #0
114 %wide.sgpr3 = call <8 x i32> asm sideeffect "; def $0", "=s" () #0
115 %wide.sgpr4 = call <2 x i32> asm sideeffect "; def $0", "=s" () #0
117 call void asm sideeffect "; use $0", "s"(<16 x i32> %wide.sgpr0) #0
118 call void asm sideeffect "; use $0", "s"(<16 x i32> %wide.sgpr1) #0
119 call void asm sideeffect "; use $0", "s"(<16 x i32> %wide.sgpr2) #0
120 call void asm sideeffect "; use $0", "s"(<8 x i32> %wide.sgpr3) #0
121 call void asm sideeffect "; use $0", "s"(<2 x i32> %wide.sgpr4) #0
122 call void asm sideeffect "; use $0", "s"(<16 x i32> %wide.sgpr5) #0
126 attributes #0 = { nounwind }
127 attributes #1 = { nounwind "no-frame-pointer-elim"="true" }