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
|
; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
; FIXME(ndesaulniers): get this test to pass with -verify-machineinstrs
; enabled. https://github.com/llvm/llvm-project/issues/60827
; RUN: llc -mtriple=x86_64-linux-gnu %s -o - -stop-after=finalize-isel \
; RUN: -verify-machineinstrs=0 -start-before=x86-isel | FileCheck %s
; One virtual register, w/o phi
define i32 @test0() {
; CHECK-LABEL: name: test0
; CHECK: bb.0 (%ir-block.0):
; CHECK-NEXT: successors: %bb.1(0x80000000), %bb.2(0x00000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: INLINEASM_BR &"", 0 /* attdialect */, 2686986 /* regdef:GR32_NOREX2 */, def %1, 13 /* imm */, %bb.2
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY %1
; CHECK-NEXT: JMP_1 %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.cleanup:
; CHECK-NEXT: [[MOV32ri:%[0-9]+]]:gr32 = MOV32ri 42
; CHECK-NEXT: $eax = COPY [[MOV32ri]]
; CHECK-NEXT: RET 0, $eax
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.z.split (inlineasm-br-indirect-target):
; CHECK-NEXT: $eax = COPY %1
; CHECK-NEXT: RET 0, $eax
%direct = callbr i32 asm "", "=r,!i"()
to label %cleanup [label %z.split]
cleanup:
ret i32 42
z.split:
%indirect = call i32 @llvm.callbr.landingpad.i32(i32 %direct)
ret i32 %indirect
}
; One virtual register, w/ phi
define i32 @test1() {
; CHECK-LABEL: name: test1
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.2(0x80000000), %bb.1(0x00000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[MOV32ri:%[0-9]+]]:gr32 = MOV32ri 42
; CHECK-NEXT: INLINEASM_BR &"", 0 /* attdialect */, 2686986 /* regdef:GR32_NOREX2 */, def %4, 13 /* imm */, %bb.1
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY %4
; CHECK-NEXT: JMP_1 %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.z.split (inlineasm-br-indirect-target):
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY %4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.cleanup:
; CHECK-NEXT: [[PHI:%[0-9]+]]:gr32 = PHI [[MOV32ri]], %bb.0, [[COPY1]], %bb.1
; CHECK-NEXT: $eax = COPY [[PHI]]
; CHECK-NEXT: RET 0, $eax
entry:
%direct = callbr i32 asm "", "=r,!i"()
to label %cleanup [label %z.split]
z.split:
%indirect = call i32 @llvm.callbr.landingpad.i32(i32 %direct)
br label %cleanup
cleanup:
%retval.0 = phi i32 [ %indirect, %z.split ], [ 42, %entry ]
ret i32 %retval.0
}
; Two virtual registers
define i32 @test2() {
; CHECK-LABEL: name: test2
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.2(0x80000000), %bb.1(0x00000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[MOV32ri:%[0-9]+]]:gr32 = MOV32ri 42
; CHECK-NEXT: INLINEASM_BR &"", 0 /* attdialect */, 2686986 /* regdef:GR32_NOREX2 */, def %5, 2686986 /* regdef:GR32_NOREX2 */, def %6, 13 /* imm */, %bb.1
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY %6
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY %5
; CHECK-NEXT: JMP_1 %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.z.split (inlineasm-br-indirect-target):
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr32 = COPY %5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.cleanup:
; CHECK-NEXT: [[PHI:%[0-9]+]]:gr32 = PHI [[MOV32ri]], %bb.0, [[COPY2]], %bb.1
; CHECK-NEXT: $eax = COPY [[PHI]]
; CHECK-NEXT: RET 0, $eax
entry:
%direct = callbr { i32, i32 } asm "", "=r,=r,!i"()
to label %cleanup [label %z.split]
z.split:
%indirect = call { i32, i32 } @llvm.callbr.landingpad.sl_i32i32s({ i32, i32 } %direct)
%asmresult2 = extractvalue { i32, i32 } %indirect, 0
br label %cleanup
cleanup:
%retval.0 = phi i32 [ %asmresult2, %z.split ], [ 42, %entry ]
ret i32 %retval.0
}
; One physical register
define i32 @test3() {
; CHECK-LABEL: name: test3
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.2(0x80000000), %bb.1(0x00000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[MOV32ri:%[0-9]+]]:gr32 = MOV32ri 42
; CHECK-NEXT: INLINEASM_BR &"", 0 /* attdialect */, 10 /* regdef */, implicit-def $ebx, 13 /* imm */, %bb.1
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY $ebx
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY [[COPY]]
; CHECK-NEXT: JMP_1 %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.z.split (inlineasm-br-indirect-target):
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: liveins: $ebx
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr32 = COPY $ebx
; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr32 = COPY [[COPY2]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.cleanup:
; CHECK-NEXT: [[PHI:%[0-9]+]]:gr32 = PHI [[MOV32ri]], %bb.0, [[COPY3]], %bb.1
; CHECK-NEXT: $eax = COPY [[PHI]]
; CHECK-NEXT: RET 0, $eax
entry:
%direct = callbr i32 asm "", "={bx},!i"()
to label %cleanup [label %z.split]
z.split:
%indirect = call i32 @llvm.callbr.landingpad.i32(i32 %direct)
br label %cleanup
cleanup:
%retval.0 = phi i32 [ %indirect, %z.split ], [ 42, %entry ]
ret i32 %retval.0
}
; Two physical registers
define i32 @test4() {
; CHECK-LABEL: name: test4
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.2(0x80000000), %bb.1(0x00000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[MOV32ri:%[0-9]+]]:gr32 = MOV32ri 42
; CHECK-NEXT: INLINEASM_BR &"", 0 /* attdialect */, 10 /* regdef */, implicit-def $ebx, 10 /* regdef */, implicit-def $edx, 13 /* imm */, %bb.1
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY $ebx
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY $edx
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr32 = COPY [[COPY1]]
; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr32 = COPY [[COPY]]
; CHECK-NEXT: JMP_1 %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.z.split (inlineasm-br-indirect-target):
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: liveins: $ebx, $edx
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY4:%[0-9]+]]:gr32 = COPY $ebx
; CHECK-NEXT: [[COPY5:%[0-9]+]]:gr32 = COPY [[COPY4]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.cleanup:
; CHECK-NEXT: [[PHI:%[0-9]+]]:gr32 = PHI [[MOV32ri]], %bb.0, [[COPY5]], %bb.1
; CHECK-NEXT: $eax = COPY [[PHI]]
; CHECK-NEXT: RET 0, $eax
entry:
%direct = callbr { i32, i32 } asm "", "={bx},={dx},!i"()
to label %cleanup [label %z.split]
z.split:
%indirect = call { i32, i32 } @llvm.callbr.landingpad.sl_i32i32s({ i32, i32 } %direct)
%asmresult2 = extractvalue { i32, i32 } %indirect, 0
br label %cleanup
cleanup:
%retval.0 = phi i32 [ %asmresult2, %z.split ], [ 42, %entry ]
ret i32 %retval.0
}
; Test the same destination appearing in the direct/fallthrough branch as the
; indirect branch. Physreg.
define i32 @test5() {
; CHECK-LABEL: name: test5
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: INLINEASM_BR &"# $0", 0 /* attdialect */, 10 /* regdef */, implicit-def $ebx, 13 /* imm */, %bb.1
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY $ebx
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY [[COPY]]
; CHECK-NEXT: JMP_1 %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.cleanup (inlineasm-br-indirect-target):
; CHECK-NEXT: liveins: $ebx
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr32 = COPY $ebx
; CHECK-NEXT: $eax = COPY [[COPY2]]
; CHECK-NEXT: RET 0, $eax
entry:
%direct = callbr i32 asm "# $0", "={bx},!i"()
to label %cleanup [label %cleanup]
cleanup:
%indirect = call i32 @llvm.callbr.landingpad.i32(i32 %direct)
ret i32 %indirect
}
; "The Devil's cross" (i.e. two asm goto with conflicting physreg constraints
; going to the same destination) as expressed by clang.
define i64 @test6() {
; CHECK-LABEL: name: test6
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.1(0x80000000), %bb.3(0x00000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: INLINEASM_BR &"", 0 /* attdialect */, 10 /* regdef */, implicit-def $rdx, 13 /* imm */, %bb.3
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64 = COPY $rdx
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64 = COPY [[COPY]]
; CHECK-NEXT: JMP_1 %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.asm.fallthrough:
; CHECK-NEXT: successors: %bb.2(0x80000000), %bb.4(0x00000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: INLINEASM_BR &"", 0 /* attdialect */, 10 /* regdef */, implicit-def $rbx, 13 /* imm */, %bb.4
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr64 = COPY $rbx
; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr64 = COPY [[COPY2]]
; CHECK-NEXT: JMP_1 %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.foo:
; CHECK-NEXT: [[PHI:%[0-9]+]]:gr64 = PHI %3, %bb.3, [[COPY3]], %bb.1, %4, %bb.4
; CHECK-NEXT: $rax = COPY [[PHI]]
; CHECK-NEXT: RET 0, $rax
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3.foo.split (inlineasm-br-indirect-target):
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: liveins: $rdx
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY4:%[0-9]+]]:gr64 = COPY $rdx
; CHECK-NEXT: [[COPY5:%[0-9]+]]:gr64 = COPY [[COPY4]]
; CHECK-NEXT: JMP_1 %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4.foo.split2 (inlineasm-br-indirect-target):
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: liveins: $rbx
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY6:%[0-9]+]]:gr64 = COPY $rbx
; CHECK-NEXT: [[COPY7:%[0-9]+]]:gr64 = COPY [[COPY6]]
; CHECK-NEXT: JMP_1 %bb.2
entry:
%0 = callbr i64 asm "", "={dx},!i"()
to label %asm.fallthrough [label %foo.split]
asm.fallthrough:
%1 = callbr i64 asm "", "={bx},!i"()
to label %foo [label %foo.split2]
foo:
%x.0 = phi i64 [ %3, %foo.split2 ], [ %2, %foo.split ], [ %1, %asm.fallthrough ]
ret i64 %x.0
foo.split:
%2 = call i64 @llvm.callbr.landingpad.i64(i64 %0)
br label %foo
foo.split2:
%3 = call i64 @llvm.callbr.landingpad.i64(i64 %1)
br label %foo
}
; Test a callbr looping back on itself.
define i32 @test7() {
; CHECK-LABEL: name: test7
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:gr32 = IMPLICIT_DEF
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.retry:
; CHECK-NEXT: successors: %bb.2(0x80000000), %bb.3(0x00000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[PHI:%[0-9]+]]:gr32 = PHI [[DEF]], %bb.0, %2, %bb.3
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY [[PHI]]
; CHECK-NEXT: INLINEASM_BR &"", 0 /* attdialect */, 10 /* regdef */, implicit-def $edx, 2147483657 /* reguse tiedto:$0 */, [[COPY]](tied-def 3), 13 /* imm */, %bb.3
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY $edx
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr32 = COPY [[COPY1]]
; CHECK-NEXT: JMP_1 %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.asm.fallthrough:
; CHECK-NEXT: $eax = COPY [[COPY2]]
; CHECK-NEXT: RET 0, $eax
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3.retry.split (inlineasm-br-indirect-target):
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: liveins: $edx
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr32 = COPY $edx
; CHECK-NEXT: [[COPY4:%[0-9]+]]:gr32 = COPY [[COPY3]]
; CHECK-NEXT: JMP_1 %bb.1
entry:
br label %retry
retry:
%x.0 = phi i32 [ undef, %entry ], [ %1, %retry.split ]
%0 = callbr i32 asm "", "={dx},0,!i"(i32 %x.0)
to label %asm.fallthrough [label %retry.split]
asm.fallthrough:
ret i32 %0
retry.split:
%1 = call i32 @llvm.callbr.landingpad.i32(i32 %0)
br label %retry
}
; Test the same destination appearing in the direct/fallthrough branch as the
; indirect branch. Same as test5 but with a virtreg rather than a physreg
; constraint.
define i32 @test8() {
; CHECK-LABEL: name: test8
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: INLINEASM_BR &"# $0", 0 /* attdialect */, 2686986 /* regdef:GR32_NOREX2 */, def %1, 13 /* imm */, %bb.1
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY %1
; CHECK-NEXT: JMP_1 %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.cleanup (inlineasm-br-indirect-target):
; CHECK-NEXT: $eax = COPY %1
; CHECK-NEXT: RET 0, $eax
entry:
%direct = callbr i32 asm "# $0", "=r,!i"()
to label %cleanup [label %cleanup]
cleanup:
%indirect = call i32 @llvm.callbr.landingpad.i32(i32 %direct)
ret i32 %indirect
}
define i64 @condition_code() {
; CHECK-LABEL: name: condition_code
; CHECK: bb.0 (%ir-block.0):
; CHECK-NEXT: successors: %bb.1(0x80000000), %bb.2(0x00000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: INLINEASM_BR &"", 16 /* maystore attdialect */, 2359306 /* regdef:GR32 */, def %1, 13 /* imm */, %bb.2
; CHECK-NEXT: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 4, implicit $eflags
; CHECK-NEXT: [[MOVZX32rr8_:%[0-9]+]]:gr32 = MOVZX32rr8 killed [[SETCCr]]
; CHECK-NEXT: [[SUBREG_TO_REG:%[0-9]+]]:gr64 = SUBREG_TO_REG 0, killed [[MOVZX32rr8_]], %subreg.sub_32bit
; CHECK-NEXT: JMP_1 %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.b:
; CHECK-NEXT: $rax = COPY [[SUBREG_TO_REG]]
; CHECK-NEXT: RET 0, $rax
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.c (inlineasm-br-indirect-target):
; CHECK-NEXT: [[SETCCr1:%[0-9]+]]:gr8 = SETCCr 4, implicit $eflags
; CHECK-NEXT: [[MOVZX32rr8_1:%[0-9]+]]:gr32 = MOVZX32rr8 killed [[SETCCr1]]
; CHECK-NEXT: [[SUBREG_TO_REG1:%[0-9]+]]:gr64 = SUBREG_TO_REG 0, killed [[MOVZX32rr8_1]], %subreg.sub_32bit
; CHECK-NEXT: $rax = COPY [[SUBREG_TO_REG1]]
; CHECK-NEXT: RET 0, $rax
%a = callbr i64 asm "", "={@ccz},!i"()
to label %b [label %c]
b:
ret i64 %a
c:
%1 = call i64 @llvm.callbr.landingpad.i64(i64 %a)
ret i64 %1
}
declare i64 @llvm.callbr.landingpad.i64(i64)
declare i32 @llvm.callbr.landingpad.i32(i32)
declare { i32, i32 } @llvm.callbr.landingpad.sl_i32i32s({ i32, i32 })
|
