1 ; RUN: llc -mtriple=amdgcn-amd-amdhsa-amdgiz -mcpu=fiji -mattr=-flat-for-global -enable-ipra=0 -amdgpu-sroa=0 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,VI,CIVI,MESA %s
2 ; RUN: llc -mtriple=amdgcn-amd-amdhsa-amdgiz -mcpu=hawaii -enable-ipra=0 -amdgpu-sroa=0 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,CI,CIVI,MESA %s
3 ; RUN: llc -mtriple=amdgcn-amd-amdhsa-amdgiz -mcpu=gfx900 -mattr=-flat-for-global -enable-ipra=0 -amdgpu-sroa=0 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefixes=GCN,GFX9,MESA %s
4 target datalayout = "A5"
6 ; FIXME: Why is this commuted only sometimes?
7 ; GCN-LABEL: {{^}}i32_fastcc_i32_i32:
8 ; GCN: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
9 ; CIVI-NEXT: v_add_{{i|u}}32_e32 v0, vcc, v1, v0
10 ; GFX9-NEXT: v_add_u32_e32 v0, v0, v1
11 ; GCN-NEXT: s_setpc_b64
12 define fastcc i32 @i32_fastcc_i32_i32(i32 %arg0, i32 %arg1) #1 {
13 %add0 = add i32 %arg0, %arg1
17 ; GCN-LABEL: {{^}}i32_fastcc_i32_i32_stack_object:
18 ; GCN: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
19 ; CIVI-NEXT: v_add_{{i|u}}32_e32 v0, vcc, v1, v0
20 ; GFX9-NEXT: v_add_u32_e32 v0, v0, v1
21 ; GCN: s_mov_b32 s5, s32
22 ; GCN: buffer_store_dword v{{[0-9]+}}, off, s[0:3], s5 offset:24
23 ; GCN: s_waitcnt vmcnt(0)
25 ; GCN: ; ScratchSize: 68
26 define fastcc i32 @i32_fastcc_i32_i32_stack_object(i32 %arg0, i32 %arg1) #1 {
27 %alloca = alloca [16 x i32], align 4, addrspace(5)
28 %gep = getelementptr inbounds [16 x i32], [16 x i32] addrspace(5)* %alloca, i32 0, i32 5
29 store volatile i32 9, i32 addrspace(5)* %gep
30 %add0 = add i32 %arg0, %arg1
34 ; GCN-LABEL: {{^}}sibling_call_i32_fastcc_i32_i32:
35 define fastcc i32 @sibling_call_i32_fastcc_i32_i32(i32 %a, i32 %b, i32 %c) #1 {
37 %ret = tail call fastcc i32 @i32_fastcc_i32_i32(i32 %a, i32 %b)
41 ; GCN-LABEL: {{^}}sibling_call_i32_fastcc_i32_i32_stack_object:
42 ; GCN: v_mov_b32_e32 [[NINE:v[0-9]+]], 9
43 ; GCN: buffer_store_dword [[NINE]], off, s[0:3], s5 offset:24
45 ; GCN: ; ScratchSize: 68
46 define fastcc i32 @sibling_call_i32_fastcc_i32_i32_stack_object(i32 %a, i32 %b, i32 %c) #1 {
48 %alloca = alloca [16 x i32], align 4, addrspace(5)
49 %gep = getelementptr inbounds [16 x i32], [16 x i32] addrspace(5)* %alloca, i32 0, i32 5
50 store volatile i32 9, i32 addrspace(5)* %gep
51 %ret = tail call fastcc i32 @i32_fastcc_i32_i32(i32 %a, i32 %b)
55 ; GCN-LABEL: {{^}}sibling_call_i32_fastcc_i32_i32_callee_stack_object:
56 ; GCN: v_mov_b32_e32 [[NINE:v[0-9]+]], 9
57 ; GCN: buffer_store_dword [[NINE]], off, s[0:3], s5 offset:24
59 ; GCN: ; ScratchSize: 136
60 define fastcc i32 @sibling_call_i32_fastcc_i32_i32_callee_stack_object(i32 %a, i32 %b, i32 %c) #1 {
62 %alloca = alloca [16 x i32], align 4, addrspace(5)
63 %gep = getelementptr inbounds [16 x i32], [16 x i32] addrspace(5)* %alloca, i32 0, i32 5
64 store volatile i32 9, i32 addrspace(5)* %gep
65 %ret = tail call fastcc i32 @i32_fastcc_i32_i32_stack_object(i32 %a, i32 %b)
69 ; GCN-LABEL: {{^}}sibling_call_i32_fastcc_i32_i32_unused_result:
70 define fastcc void @sibling_call_i32_fastcc_i32_i32_unused_result(i32 %a, i32 %b, i32 %c) #1 {
72 %ret = tail call fastcc i32 @i32_fastcc_i32_i32(i32 %a, i32 %b)
76 ; It doesn't make sense to do a tail from a kernel
77 ; GCN-LABEL: {{^}}kernel_call_i32_fastcc_i32_i32_unused_result:
78 ;define amdgpu_kernel void @kernel_call_i32_fastcc_i32_i32_unused_result(i32 %a, i32 %b, i32 %c) #1 {
79 define amdgpu_kernel void @kernel_call_i32_fastcc_i32_i32_unused_result(i32 %a, i32 %b, i32 %c) #1 {
81 %ret = tail call fastcc i32 @i32_fastcc_i32_i32(i32 %a, i32 %b)
85 ; GCN-LABEL: {{^}}i32_fastcc_i32_byval_i32:
87 ; GCN-NEXT: s_mov_b32 s5, s32
88 ; GCN-NEXT: buffer_load_dword v1, off, s[0:3], s5 offset:4
89 ; GCN-NEXT: s_waitcnt vmcnt(0)
91 ; CIVI-NEXT: v_add_{{i|u}}32_e32 v0, vcc, v1, v0
92 ; GFX9-NEXT: v_add_u32_e32 v0, v0, v1
94 ; GCN-NEXT: s_setpc_b64 s[30:31]
95 define fastcc i32 @i32_fastcc_i32_byval_i32(i32 %arg0, i32 addrspace(5)* byval align 4 %arg1) #1 {
96 %arg1.load = load i32, i32 addrspace(5)* %arg1, align 4
97 %add0 = add i32 %arg0, %arg1.load
101 ; Tail call disallowed with byval in parent.
102 ; GCN-LABEL: {{^}}sibling_call_i32_fastcc_i32_byval_i32_byval_parent:
103 ; GCN-NOT: v_writelane_b32 v{{[0-9]+}}, s32
104 ; GCN: buffer_store_dword v{{[0-9]+}}, off, s[0:3], s32 offset:4
106 ; GCN-NOT: v_readlane_b32 s32
108 define fastcc i32 @sibling_call_i32_fastcc_i32_byval_i32_byval_parent(i32 %a, i32 addrspace(5)* byval %b.byval, i32 %c) #1 {
110 %ret = tail call fastcc i32 @i32_fastcc_i32_byval_i32(i32 %a, i32 addrspace(5)* %b.byval)
114 ; Tail call disallowed with byval in parent, not callee.
115 ; GCN-LABEL: {{^}}sibling_call_i32_fastcc_i32_byval_i32:
118 ; GCN: buffer_load_dword v1, off, s[0:3], s4 offset:16
119 ; GCN: s_mov_b32 s5, s32
120 ; GCN: buffer_store_dword v1, off, s[0:3], s5 offset:4
121 ; GCN-NEXT: s_setpc_b64
122 define fastcc i32 @sibling_call_i32_fastcc_i32_byval_i32(i32 %a, [16 x i32] %large) #1 {
124 %ret = tail call fastcc i32 @i32_fastcc_i32_byval_i32(i32 %a, i32 addrspace(5)* inttoptr (i32 16 to i32 addrspace(5)*))
128 ; GCN-LABEL: {{^}}i32_fastcc_i32_i32_a32i32:
129 ; GCN: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
130 ; GCN-DAG: buffer_load_dword [[LOAD_0:v[0-9]+]], off, s[0:3], s5 offset:4
131 ; GCN-DAG: buffer_load_dword [[LOAD_1:v[0-9]+]], off, s[0:3], s5 offset:8
133 ; CIVI-NEXT: v_add_{{i|u}}32_e32 v0, vcc, v1, v0
134 ; CIVI: v_add_{{i|u}}32_e32 v0, vcc, [[LOAD_0]], v0
135 ; CIVI: v_add_{{i|u}}32_e32 v0, vcc, [[LOAD_1]], v0
138 ; GFX9-NEXT: v_add_u32_e32 v0, v0, v1
139 ; GFX9: v_add_u32_e32 v0, v0, [[LOAD_0]]
140 ; GFX9: v_add_u32_e32 v0, v0, [[LOAD_1]]
142 ; GCN-NEXT: s_setpc_b64
143 define fastcc i32 @i32_fastcc_i32_i32_a32i32(i32 %arg0, i32 %arg1, [32 x i32] %large) #1 {
144 %val_firststack = extractvalue [32 x i32] %large, 30
145 %val_laststack = extractvalue [32 x i32] %large, 31
146 %add0 = add i32 %arg0, %arg1
147 %add1 = add i32 %add0, %val_firststack
148 %add2 = add i32 %add1, %val_laststack
152 ; FIXME: Why load and store same location for stack args?
153 ; GCN-LABEL: {{^}}sibling_call_i32_fastcc_i32_i32_a32i32:
154 ; GCN: s_mov_b32 s5, s32
156 ; GCN-DAG: buffer_store_dword v32, off, s[0:3], s5 offset:16 ; 4-byte Folded Spill
157 ; GCN-DAG: buffer_store_dword v33, off, s[0:3], s5 offset:12 ; 4-byte Folded Spill
159 ; GCN-DAG: buffer_load_dword [[LOAD_0:v[0-9]+]], off, s[0:3], s5 offset:4
160 ; GCN-DAG: buffer_load_dword [[LOAD_1:v[0-9]+]], off, s[0:3], s5 offset:8
164 ; GCN-DAG: buffer_store_dword [[LOAD_0]], off, s[0:3], s5 offset:4
165 ; GCN-DAG: buffer_store_dword [[LOAD_1]], off, s[0:3], s5 offset:8
167 ; GCN-DAG: buffer_load_dword v32, off, s[0:3], s5 offset:16 ; 4-byte Folded Reload
168 ; GCN-DAG: buffer_load_dword v33, off, s[0:3], s5 offset:12 ; 4-byte Folded Reload
172 define fastcc i32 @sibling_call_i32_fastcc_i32_i32_a32i32(i32 %a, i32 %b, [32 x i32] %c) #1 {
174 %ret = tail call fastcc i32 @i32_fastcc_i32_i32_a32i32(i32 %a, i32 %b, [32 x i32] %c)
178 ; GCN-LABEL: {{^}}sibling_call_i32_fastcc_i32_i32_a32i32_stack_object:
179 ; GCN-DAG: s_mov_b32 s5, s32
181 ; GCN-DAG: v_mov_b32_e32 [[NINE:v[0-9]+]], 9
182 ; GCN: buffer_store_dword [[NINE]], off, s[0:3], s5 offset:44
186 define fastcc i32 @sibling_call_i32_fastcc_i32_i32_a32i32_stack_object(i32 %a, i32 %b, [32 x i32] %c) #1 {
188 %alloca = alloca [16 x i32], align 4, addrspace(5)
189 %gep = getelementptr inbounds [16 x i32], [16 x i32] addrspace(5)* %alloca, i32 0, i32 5
190 store volatile i32 9, i32 addrspace(5)* %gep
191 %ret = tail call fastcc i32 @i32_fastcc_i32_i32_a32i32(i32 %a, i32 %b, [32 x i32] %c)
195 ; If the callee requires more stack argument space than the caller,
196 ; don't do a tail call.
197 ; TODO: Do we really need this restriction?
199 ; GCN-LABEL: {{^}}no_sibling_call_callee_more_stack_space:
202 define fastcc i32 @no_sibling_call_callee_more_stack_space(i32 %a, i32 %b) #1 {
204 %ret = tail call fastcc i32 @i32_fastcc_i32_i32_a32i32(i32 %a, i32 %b, [32 x i32] zeroinitializer)
208 ; Have another non-tail in the function
209 ; GCN-LABEL: {{^}}sibling_call_i32_fastcc_i32_i32_other_call:
210 ; GCN: s_mov_b32 s5, s32
211 ; GCN: buffer_store_dword v34, off, s[0:3], s5 offset:12
212 ; GCN: buffer_store_dword v32, off, s[0:3], s5 offset:8 ; 4-byte Folded Spill
213 ; GCN: buffer_store_dword v33, off, s[0:3], s5 offset:4 ; 4-byte Folded Spill
214 ; GCN-DAG: v_writelane_b32 v34, s33, 0
215 ; GCN-DAG: v_writelane_b32 v34, s34, 1
216 ; GCN-DAG: v_writelane_b32 v34, s35, 2
217 ; GCN-DAG: s_add_u32 s32, s32, 0x400
219 ; GCN-DAG: s_getpc_b64
222 ; GCN: s_getpc_b64 s[6:7]
223 ; GCN: s_add_u32 s6, s6, sibling_call_i32_fastcc_i32_i32@rel32@lo+4
224 ; GCN: s_addc_u32 s7, s7, sibling_call_i32_fastcc_i32_i32@rel32@hi+4
226 ; GCN-DAG: v_readlane_b32 s33, v34, 0
227 ; GCN-DAG: v_readlane_b32 s34, v34, 1
228 ; GCN-DAG: v_readlane_b32 s35, v34, 2
230 ; GCN: buffer_load_dword v33, off, s[0:3], s5 offset:4
231 ; GCN: buffer_load_dword v32, off, s[0:3], s5 offset:8
232 ; GCN: buffer_load_dword v34, off, s[0:3], s5 offset:12
233 ; GCN: s_sub_u32 s32, s32, 0x400
234 ; GCN: s_setpc_b64 s[6:7]
235 define fastcc i32 @sibling_call_i32_fastcc_i32_i32_other_call(i32 %a, i32 %b, i32 %c) #1 {
237 %other.call = tail call fastcc i32 @i32_fastcc_i32_i32(i32 %a, i32 %b)
238 %ret = tail call fastcc i32 @sibling_call_i32_fastcc_i32_i32(i32 %a, i32 %b, i32 %other.call)
242 ; Have stack object in caller and stack passed arguments. SP should be
243 ; in same place at function exit.
245 ; GCN-LABEL: {{^}}sibling_call_stack_objecti32_fastcc_i32_i32_a32i32:
246 ; GCN: s_mov_b32 s5, s32
248 ; GCN: s_setpc_b64 s[6:7]
249 define fastcc i32 @sibling_call_stack_objecti32_fastcc_i32_i32_a32i32(i32 %a, i32 %b, [32 x i32] %c) #1 {
251 %alloca = alloca [16 x i32], align 4, addrspace(5)
252 %gep = getelementptr inbounds [16 x i32], [16 x i32] addrspace(5)* %alloca, i32 0, i32 5
253 store volatile i32 9, i32 addrspace(5)* %gep
254 %ret = tail call fastcc i32 @i32_fastcc_i32_i32_a32i32(i32 %a, i32 %b, [32 x i32] %c)
258 ; GCN-LABEL: {{^}}sibling_call_stack_objecti32_fastcc_i32_i32_a32i32_larger_arg_area:
259 ; GCN: s_mov_b32 s5, s32
261 ; GCN: s_setpc_b64 s[6:7]
262 define fastcc i32 @sibling_call_stack_objecti32_fastcc_i32_i32_a32i32_larger_arg_area(i32 %a, i32 %b, [36 x i32] %c) #1 {
264 %alloca = alloca [16 x i32], align 4, addrspace(5)
265 %gep = getelementptr inbounds [16 x i32], [16 x i32] addrspace(5)* %alloca, i32 0, i32 5
266 store volatile i32 9, i32 addrspace(5)* %gep
267 %ret = tail call fastcc i32 @i32_fastcc_i32_i32_a32i32(i32 %a, i32 %b, [32 x i32] zeroinitializer)
271 attributes #0 = { nounwind }
272 attributes #1 = { nounwind noinline }