1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=memcpyopt,dse -S -verify-memoryssa | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i686-apple-darwin9"
%0 = type { x86_fp80, x86_fp80 }
%1 = type { i32, i32 }
@C = external constant [0 x i8]
declare void @llvm.memcpy.p1.p0.i64(ptr addrspace(1) nocapture, ptr nocapture, i64, i1) nounwind
declare void @llvm.memcpy.p0.p1.i64(ptr nocapture, ptr addrspace(1) nocapture, i64, i1) nounwind
declare void @llvm.memcpy.p1.p1.i64(ptr addrspace(1) nocapture, ptr addrspace(1) nocapture, i64, i1) nounwind
declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture, i32, i1) nounwind
declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind
declare void @llvm.memcpy.inline.p0.p0.i32(ptr nocapture, ptr nocapture, i32, i1) nounwind
declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) nounwind
; Check that one of the memcpy's are removed.
;; FIXME: PR 8643 We should be able to eliminate the last memcpy here.
define void @test1(ptr sret(%0) %agg.result, x86_fp80 %z.0, x86_fp80 %z.1) nounwind {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP2:%.*]] = alloca [[TMP0:%.*]], align 16
; CHECK-NEXT: [[MEMTMP:%.*]] = alloca [[TMP0]], align 16
; CHECK-NEXT: [[TMP5:%.*]] = fsub x86_fp80 0xK80000000000000000000, [[Z_1:%.*]]
; CHECK-NEXT: call void @ccoshl(ptr sret([[TMP0]]) [[TMP2]], x86_fp80 [[TMP5]], x86_fp80 [[Z_0:%.*]]) #[[ATTR2:[0-9]+]]
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 16 [[AGG_RESULT:%.*]], ptr align 16 [[TMP2]], i32 32, i1 false)
; CHECK-NEXT: ret void
;
entry:
%tmp2 = alloca %0
%memtmp = alloca %0, align 16
%tmp5 = fsub x86_fp80 0xK80000000000000000000, %z.1
call void @ccoshl(ptr sret(%0) %memtmp, x86_fp80 %tmp5, x86_fp80 %z.0) nounwind
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %tmp2, ptr align 16 %memtmp, i32 32, i1 false)
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %agg.result, ptr align 16 %tmp2, i32 32, i1 false)
ret void
}
declare void @ccoshl(ptr nocapture sret(%0), x86_fp80, x86_fp80) nounwind
; The intermediate alloca and one of the memcpy's should be eliminated, the
; other should be related with a memmove.
define void @test2(ptr %P, ptr %Q) nounwind {
; CHECK-LABEL: @test2(
; CHECK-NEXT: call void @llvm.memmove.p0.p0.i32(ptr align 16 [[Q:%.*]], ptr align 16 [[P:%.*]], i32 32, i1 false)
; CHECK-NEXT: ret void
;
%memtmp = alloca %0, align 16
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %memtmp, ptr align 16 %P, i32 32, i1 false)
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %Q, ptr align 16 %memtmp, i32 32, i1 false)
ret void
}
; The intermediate alloca and one of the memcpy's should be eliminated, the
; other should be related with a memcpy.
define void @test2_constant(ptr %Q) nounwind {
; CHECK-LABEL: @test2_constant(
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 16 [[Q:%.*]], ptr align 16 @C, i32 32, i1 false)
; CHECK-NEXT: ret void
;
%memtmp = alloca %0, align 16
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %memtmp, ptr align 16 @C, i32 32, i1 false)
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %Q, ptr align 16 %memtmp, i32 32, i1 false)
ret void
}
; The intermediate alloca and one of the memcpy's should be eliminated, the
; other should be related with a memcpy.
define void @test2_memcpy(ptr noalias %P, ptr noalias %Q) nounwind {
; CHECK-LABEL: @test2_memcpy(
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 16 [[Q:%.*]], ptr align 16 [[P:%.*]], i32 32, i1 false)
; CHECK-NEXT: ret void
;
%memtmp = alloca %0, align 16
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %memtmp, ptr align 16 %P, i32 32, i1 false)
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %Q, ptr align 16 %memtmp, i32 32, i1 false)
ret void
}
; Same as @test2_memcpy, but the remaining memcpy should remain non-inline even
; if the one eliminated was inline.
define void @test3_memcpy(ptr noalias %P, ptr noalias %Q) nounwind {
; CHECK-LABEL: @test3_memcpy(
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 16 [[Q:%.*]], ptr align 16 [[P:%.*]], i32 32, i1 false)
; CHECK-NEXT: ret void
;
%memtmp = alloca %0, align 16
call void @llvm.memcpy.inline.p0.p0.i32(ptr align 16 %memtmp, ptr align 16 %P, i32 32, i1 false)
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %Q, ptr align 16 %memtmp, i32 32, i1 false)
ret void
}
; Same as @test2_memcpy, but the remaining memcpy should remain inline even
; if the one eliminated was not inline.
define void @test4_memcpy(ptr noalias %P, ptr noalias %Q) nounwind {
; CHECK-LABEL: @test4_memcpy(
; CHECK-NEXT: call void @llvm.memcpy.inline.p0.p0.i32(ptr align 16 [[Q:%.*]], ptr align 16 [[P:%.*]], i32 32, i1 false)
; CHECK-NEXT: ret void
;
%memtmp = alloca %0, align 16
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %memtmp, ptr align 16 %P, i32 32, i1 false)
call void @llvm.memcpy.inline.p0.p0.i32(ptr align 16 %Q, ptr align 16 %memtmp, i32 32, i1 false)
ret void
}
; Same as @test2_memcpy, and the inline-ness should be preserved.
define void @test5_memcpy(ptr noalias %P, ptr noalias %Q) nounwind {
; CHECK-LABEL: @test5_memcpy(
; CHECK-NEXT: call void @llvm.memcpy.inline.p0.p0.i32(ptr align 16 [[Q:%.*]], ptr align 16 [[P:%.*]], i32 32, i1 false)
; CHECK-NEXT: ret void
;
%memtmp = alloca %0, align 16
call void @llvm.memcpy.inline.p0.p0.i32(ptr align 16 %memtmp, ptr align 16 %P, i32 32, i1 false)
call void @llvm.memcpy.inline.p0.p0.i32(ptr align 16 %Q, ptr align 16 %memtmp, i32 32, i1 false)
ret void
}
@x = external global %0
define void @test3(ptr noalias sret(%0) %agg.result) nounwind {
; CHECK-LABEL: @test3(
; CHECK-NEXT: [[X_0:%.*]] = alloca [[TMP0:%.*]], align 16
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 16 [[AGG_RESULT:%.*]], ptr align 16 @x, i32 32, i1 false)
; CHECK-NEXT: ret void
;
%x.0 = alloca %0
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %x.0, ptr align 16 @x, i32 32, i1 false)
call void @llvm.memcpy.p0.p0.i32(ptr align 16 %agg.result, ptr align 16 %x.0, i32 32, i1 false)
ret void
}
; PR8644
define void @test4(ptr %P) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: call void @test4a(ptr byval(i8) align 1 [[P:%.*]])
; CHECK-NEXT: ret void
;
%A = alloca %1
call void @llvm.memcpy.p0.p0.i64(ptr align 4 %A, ptr align 4 %P, i64 8, i1 false)
call void @test4a(ptr align 1 byval(i8) %A)
ret void
}
; Make sure we don't remove the memcpy if the source address space doesn't match the byval argument
define void @test4_addrspace(ptr addrspace(1) %P) {
; CHECK-LABEL: @test4_addrspace(
; CHECK-NEXT: [[A1:%.*]] = alloca [[TMP1:%.*]], align 8
; CHECK-NEXT: call void @llvm.memcpy.p0.p1.i64(ptr align 4 [[A1]], ptr addrspace(1) align 4 [[P:%.*]], i64 8, i1 false)
; CHECK-NEXT: call void @test4a(ptr byval(i8) align 1 [[A1]])
; CHECK-NEXT: ret void
;
%a1 = alloca %1
call void @llvm.memcpy.p0.p1.i64(ptr align 4 %a1, ptr addrspace(1) align 4 %P, i64 8, i1 false)
call void @test4a(ptr align 1 byval(i8) %a1)
ret void
}
define void @test4_write_between(ptr %P) {
; CHECK-LABEL: @test4_write_between(
; CHECK-NEXT: [[A1:%.*]] = alloca [[TMP1:%.*]], align 8
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 [[A1]], ptr align 4 [[P:%.*]], i64 8, i1 false)
; CHECK-NEXT: store i8 0, ptr [[A1]], align 1
; CHECK-NEXT: call void @test4a(ptr byval(i8) align 1 [[A1]])
; CHECK-NEXT: ret void
;
%a1 = alloca %1
call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a1, ptr align 4 %P, i64 8, i1 false)
store i8 0, ptr %a1
call void @test4a(ptr align 1 byval(i8) %a1)
ret void
}
define i8 @test4_read_between(ptr %P) {
; CHECK-LABEL: @test4_read_between(
; CHECK-NEXT: [[A1:%.*]] = alloca [[TMP1:%.*]], align 8
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 [[A1]], ptr align 4 [[P:%.*]], i64 8, i1 false)
; CHECK-NEXT: [[X:%.*]] = load i8, ptr [[A1]], align 1
; CHECK-NEXT: call void @test4a(ptr byval(i8) align 1 [[P]])
; CHECK-NEXT: ret i8 [[X]]
;
%a1 = alloca %1
call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a1, ptr align 4 %P, i64 8, i1 false)
%x = load i8, ptr %a1
call void @test4a(ptr align 1 byval(i8) %a1)
ret i8 %x
}
define void @test4_non_local(ptr %P, i1 %c) {
; CHECK-LABEL: @test4_non_local(
; CHECK-NEXT: br i1 [[C:%.*]], label [[CALL:%.*]], label [[EXIT:%.*]]
; CHECK: call:
; CHECK-NEXT: call void @test4a(ptr byval(i8) align 1 [[P:%.*]])
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
%a1 = alloca %1
call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a1, ptr align 4 %P, i64 8, i1 false)
br i1 %c, label %call, label %exit
call:
call void @test4a(ptr align 1 byval(i8) %a1)
br label %exit
exit:
ret void
}
declare void @test4a(ptr align 1 byval(i8))
%struct.S = type { i128, [4 x i8]}
@sS = external global %struct.S, align 16
declare void @test5a(ptr align 16 byval(%struct.S)) nounwind ssp
; rdar://8713376 - This memcpy can't be eliminated.
define i32 @test5(i32 %x) nounwind ssp {
; CHECK-LABEL: @test5(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[Y:%.*]] = alloca [[STRUCT_S:%.*]], align 16
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 16 [[Y]], ptr align 16 @sS, i64 32, i1 false)
; CHECK-NEXT: [[A:%.*]] = getelementptr [[STRUCT_S]], ptr [[Y]], i64 0, i32 1, i64 0
; CHECK-NEXT: store i8 4, ptr [[A]], align 1
; CHECK-NEXT: call void @test5a(ptr byval([[STRUCT_S]]) align 16 [[Y]])
; CHECK-NEXT: ret i32 0
;
entry:
%y = alloca %struct.S, align 16
call void @llvm.memcpy.p0.p0.i64(ptr align 16 %y, ptr align 16 @sS, i64 32, i1 false)
%a = getelementptr %struct.S, ptr %y, i64 0, i32 1, i64 0
store i8 4, ptr %a
call void @test5a(ptr align 16 byval(%struct.S) %y)
ret i32 0
}
;; Noop memcpy should be zapped.
define void @test6(ptr %P) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0.p0.i64(ptr align 4 %P, ptr align 4 %P, i64 8, i1 false)
ret void
}
; PR9794 - Should forward memcpy into byval argument even though the memcpy
; isn't itself 8 byte aligned.
%struct.p = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
define i32 @test7(ptr nocapture align 8 byval(%struct.p) %q) nounwind ssp {
; CHECK-LABEL: @test7(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CALL:%.*]] = call i32 @g(ptr byval([[STRUCT_P:%.*]]) align 8 [[Q:%.*]]) #[[ATTR2]]
; CHECK-NEXT: ret i32 [[CALL]]
;
entry:
%agg.tmp = alloca %struct.p, align 4
call void @llvm.memcpy.p0.p0.i64(ptr align 4 %agg.tmp, ptr align 4 %q, i64 48, i1 false)
%call = call i32 @g(ptr align 8 byval(%struct.p) %agg.tmp) nounwind
ret i32 %call
}
declare i32 @g(ptr align 8 byval(%struct.p))
; PR11142 - When looking for a memcpy-memcpy dependency, don't get stuck on
; instructions between the memcpy's that only affect the destination pointer.
@test8.str = internal constant [7 x i8] c"ABCDEF\00"
define void @test8() {
; CHECK-LABEL: @test8(
; CHECK-NEXT: ret void
;
%A = tail call ptr @malloc(i32 10)
%B = getelementptr inbounds i8, ptr %A, i64 2
tail call void @llvm.memcpy.p0.p0.i32(ptr %B, ptr @test8.str, i32 7, i1 false)
%C = tail call ptr @malloc(i32 10)
%D = getelementptr inbounds i8, ptr %C, i64 2
tail call void @llvm.memcpy.p0.p0.i32(ptr %D, ptr %B, i32 7, i1 false)
ret void
}
declare noalias ptr @malloc(i32) willreturn allockind("alloc,uninitialized") allocsize(0)
; rdar://11341081
%struct.big = type { [50 x i32] }
define void @test9_addrspacecast() nounwind ssp uwtable {
; CHECK-LABEL: @test9_addrspacecast(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[B:%.*]] = alloca [[STRUCT_BIG:%.*]], align 4
; CHECK-NEXT: [[TMP:%.*]] = alloca [[STRUCT_BIG]], align 4
; CHECK-NEXT: call void @f1(ptr sret([[STRUCT_BIG]]) [[B]])
; CHECK-NEXT: [[TMP0:%.*]] = addrspacecast ptr [[B]] to ptr addrspace(1)
; CHECK-NEXT: [[TMP1:%.*]] = addrspacecast ptr [[TMP]] to ptr addrspace(1)
; CHECK-NEXT: call void @f2(ptr [[B]])
; CHECK-NEXT: ret void
;
entry:
%b = alloca %struct.big, align 4
%tmp = alloca %struct.big, align 4
call void @f1(ptr sret(%struct.big) %tmp)
%0 = addrspacecast ptr %b to ptr addrspace(1)
%1 = addrspacecast ptr %tmp to ptr addrspace(1)
call void @llvm.memcpy.p1.p1.i64(ptr addrspace(1) align 4 %0, ptr addrspace(1) align 4 %1, i64 200, i1 false)
call void @f2(ptr %b)
ret void
}
define void @test9() nounwind ssp uwtable {
; CHECK-LABEL: @test9(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[B:%.*]] = alloca [[STRUCT_BIG:%.*]], align 4
; CHECK-NEXT: [[TMP:%.*]] = alloca [[STRUCT_BIG]], align 4
; CHECK-NEXT: call void @f1(ptr sret([[STRUCT_BIG]]) [[B]])
; CHECK-NEXT: call void @f2(ptr [[B]])
; CHECK-NEXT: ret void
;
entry:
%b = alloca %struct.big, align 4
%tmp = alloca %struct.big, align 4
call void @f1(ptr sret(%struct.big) %tmp)
call void @llvm.memcpy.p0.p0.i64(ptr align 4 %b, ptr align 4 %tmp, i64 200, i1 false)
call void @f2(ptr %b)
ret void
}
; rdar://14073661.
; Test10 triggered assertion when the compiler try to get the size of the
; opaque type of *x, where the x is the formal argument with attribute 'sret'.
%opaque = type opaque
declare void @foo(ptr noalias nocapture)
define void @test10(ptr noalias nocapture sret(%opaque) %x, i32 %y) {
; CHECK-LABEL: @test10(
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 [[Y:%.*]], ptr [[A]], align 4
; CHECK-NEXT: call void @foo(ptr noalias nocapture [[A]])
; CHECK-NEXT: [[C:%.*]] = load i32, ptr [[A]], align 4
; CHECK-NEXT: store i32 [[C]], ptr [[X:%.*]], align 4
; CHECK-NEXT: ret void
;
%a = alloca i32, align 4
store i32 %y, ptr %a
call void @foo(ptr noalias nocapture %a)
%c = load i32, ptr %a
store i32 %c, ptr %x
ret void
}
; don't create new addressspacecasts when we don't know they're safe for the target
define void @test11(ptr addrspace(1) nocapture dereferenceable(80) %P) {
; CHECK-LABEL: @test11(
; CHECK-NEXT: call void @llvm.memset.p1.i64(ptr addrspace(1) align 4 [[P:%.*]], i8 0, i64 80, i1 false)
; CHECK-NEXT: ret void
;
%A = alloca [20 x i32], align 4
call void @llvm.memset.p0.i64(ptr align 4 %A, i8 0, i64 80, i1 false)
call void @llvm.memcpy.p1.p0.i64(ptr addrspace(1) align 4 %P, ptr align 4 %A, i64 80, i1 false)
ret void
}
declare void @f1(ptr nocapture sret(%struct.big))
declare void @f2(ptr)
|
