1
; RUN: llc < %s -mtriple=x86_64-apple-macosx -regalloc=greedy | FileCheck %s
3
; This testing case is reduced from 254.gap SyFgets funciton.
4
; We make sure a spill is not hoisted to a hotter outer loop.
6
%struct.TMP.1 = type { %struct.TMP.2*, %struct.TMP.2*, [1024 x i8] }
7
%struct.TMP.2 = type { i8*, i32, i32, i16, i16, %struct.TMP.3, i32, i8*, i32 (i8*)*, i32 (i8*, i8*, i32)*, i64 (i8*, i64, i32)*, i32 (i8*, i8*, i32)*, %struct.TMP.3, %struct.TMP.4*, i32, [3 x i8], [1 x i8], %struct.TMP.3, i32, i64 }
8
%struct.TMP.4 = type opaque
9
%struct.TMP.3 = type { i8*, i32 }
11
@syBuf = external global [16 x %struct.TMP.1], align 16
12
@syHistory = external global [8192 x i8], align 16
13
@SyFgets.yank = external global [512 x i8], align 16
14
@syCTRO = external global i32, align 4
16
; CHECK-LABEL: SyFgets
17
define i8* @SyFgets(i8* %line, i64 %length, i64 %fid) {
19
%sub.ptr.rhs.cast646 = ptrtoint i8* %line to i64
20
%old = alloca [512 x i8], align 16
21
%0 = getelementptr inbounds [512 x i8], [512 x i8]* %old, i64 0, i64 0
22
switch i64 %fid, label %if.then [
31
switch i64 undef, label %if.end25 [
32
i64 0, label %if.then4
33
i64 1, label %if.end25
37
br i1 undef, label %SyTime.exit, label %if.then.i
43
br i1 undef, label %SyTime.exit2681, label %if.then.i2673
55
br i1 undef, label %SyTime.exit2720, label %if.then.i2712
61
%add.ptr = getelementptr [512 x i8], [512 x i8]* %old, i64 0, i64 512
62
%cmp293427 = icmp ult i8* %0, %add.ptr
63
br i1 %cmp293427, label %for.body.lr.ph, label %while.body.preheader
66
call void @llvm.memset.p0i8.i64(i8* undef, i8 32, i64 512, i32 16, i1 false)
67
br label %while.body.preheader
70
%add.ptr1603 = getelementptr [512 x i8], [512 x i8]* null, i64 0, i64 512
71
%echo.i3101 = getelementptr [16 x %struct.TMP.1], [16 x %struct.TMP.1]* @syBuf, i64 0, i64 %fid, i32 1
72
%1 = xor i64 %sub.ptr.rhs.cast646, -1
76
%ch2.0 = phi i32 [ 0, %while.body.preheader ], [ %ch.12.ch2.12, %do.body ]
77
%rep.0 = phi i32 [ 1, %while.body.preheader ], [ %rep.6, %do.body ]
78
store i32 0, i32* @syCTRO, align 4, !tbaa !1
79
%ch.0.ch2.0 = select i1 undef, i32 14, i32 %ch2.0
80
%ch2.2 = select i1 undef, i32 0, i32 %ch.0.ch2.0
81
%ch.2.ch2.2 = select i1 undef, i32 0, i32 %ch2.2
82
%ch2.4 = select i1 undef, i32 278, i32 %ch.2.ch2.2
83
%ch2.5 = select i1 undef, i32 0, i32 %ch2.4
84
%rep.2 = select i1 undef, i32 undef, i32 %rep.0
85
%ch.5.ch2.5 = select i1 undef, i32 undef, i32 %ch2.5
86
%ch2.7 = select i1 undef, i32 0, i32 %ch.5.ch2.5
87
%rep.3 = select i1 undef, i32 undef, i32 %rep.2
88
%ch.7.ch2.7 = select i1 false, i32 0, i32 %ch2.7
89
%mul98.rep.3 = select i1 false, i32 0, i32 %rep.3
90
%ch2.9 = select i1 undef, i32 undef, i32 %ch.7.ch2.7
91
%rep.5 = select i1 undef, i32 undef, i32 %mul98.rep.3
92
%ch2.10 = select i1 false, i32 undef, i32 %ch2.9
93
%rep.6 = select i1 false, i32 undef, i32 %rep.5
94
%isdigittmp = add i32 %ch2.10, -48
95
%isdigit = icmp ult i32 %isdigittmp, 10
96
%cmp119 = icmp eq i32 undef, 22
97
%or.cond1875 = and i1 %isdigit, %cmp119
98
%ch.10.ch2.10 = select i1 %or.cond1875, i32 undef, i32 %ch2.10
99
%.ch.10 = select i1 %or.cond1875, i32 0, i32 undef
100
%ch2.12 = select i1 undef, i32 %.ch.10, i32 %ch.10.ch2.10
101
%ch.12 = select i1 undef, i32 0, i32 %.ch.10
102
%ch.12.ch2.12 = select i1 false, i32 %ch.12, i32 %ch2.12
103
%.ch.12 = select i1 false, i32 0, i32 %ch.12
104
%cmp147 = icmp eq i32 %.ch.12, 0
105
br i1 %cmp147, label %do.body, label %do.end
108
%cmp164 = icmp eq i32 %ch.12.ch2.12, 21
109
%mul167 = shl i32 %rep.6, 2
110
%rep.8 = select i1 %cmp164, i32 %mul167, i32 %rep.6
111
%..ch.19 = select i1 false, i32 2, i32 0
112
br i1 undef, label %while.body200, label %while.end1465
115
%dec3386.in = phi i32 [ %dec3386, %while.cond197.backedge ], [ %rep.8, %do.end ]
116
%oldc.13384 = phi i32 [ %oldc.1.be, %while.cond197.backedge ], [ 0, %do.end ]
117
%ch.213379 = phi i32 [ %last.1.be, %while.cond197.backedge ], [ %..ch.19, %do.end ]
118
%last.13371 = phi i32 [ %last.1.be, %while.cond197.backedge ], [ 0, %do.end ]
119
%dec3386 = add i32 %dec3386.in, -1
120
switch i32 %ch.213379, label %sw.default [
121
i32 1, label %while.cond201.preheader
122
i32 322, label %sw.bb206
123
i32 354, label %sw.bb206
124
i32 2, label %sw.bb243
125
i32 364, label %sw.bb1077
126
i32 326, label %sw.bb256
127
i32 358, label %sw.bb256
128
i32 341, label %sw.bb979
129
i32 323, label %while.cond1037.preheader
130
i32 373, label %sw.bb979
131
i32 4, label %if.then1477
132
i32 332, label %sw.bb1077
133
i32 11, label %for.cond357
134
i32 355, label %while.cond1037.preheader
135
i32 324, label %sw.bb474
136
i32 356, label %sw.bb474
137
i32 20, label %sw.bb566
138
i32 -1, label %while.cond197.backedge
139
i32 268, label %sw.bb1134
140
i32 16, label %while.cond635.preheader
141
i32 18, label %sw.bb956
142
i32 316, label %while.cond864
145
while.cond1037.preheader:
146
%cmp10393273 = icmp eq i8 undef, 0
147
br i1 %cmp10393273, label %if.end1070, label %land.rhs1041
149
while.cond635.preheader:
150
br i1 undef, label %for.body643.us, label %while.cond661
153
br label %for.body643.us
155
while.cond201.preheader:
156
%umax = select i1 false, i64 undef, i64 %1
157
%2 = xor i64 %umax, -1
158
%3 = inttoptr i64 %2 to i8*
159
br label %while.cond197.backedge
162
br label %while.cond197.backedge
165
br label %while.cond197.backedge
168
br label %while.cond197.backedge
170
while.cond197.backedge:
171
%last.1.be = phi i32 [ %ch.213379, %sw.default ], [ -1, %while.body200 ], [ %ch.213379, %sw.bb1077 ], [ %ch.213379, %sw.bb979 ], [ 18, %sw.bb956 ], [ 20, %sw.bb566 ], [ %ch.213379, %for.end552 ], [ %ch.213379, %sw.bb256 ], [ 2, %sw.bb243 ], [ 1, %while.cond201.preheader ], [ 268, %for.cond1145.preheader ], [ %ch.213379, %sw.bb206 ]
172
%oldc.1.be = phi i32 [ %oldc.13384, %sw.default ], [ %oldc.13384, %while.body200 ], [ %oldc.13384, %sw.bb1077 ], [ %oldc.13384, %sw.bb979 ], [ %oldc.13384, %sw.bb956 ], [ %oldc.13384, %sw.bb566 ], [ %oldc.13384, %for.end552 ], [ %oldc.13384, %sw.bb256 ], [ %oldc.13384, %sw.bb243 ], [ %oldc.13384, %while.cond201.preheader ], [ 0, %for.cond1145.preheader ], [ %oldc.13384, %sw.bb206 ]
173
%cmp198 = icmp sgt i32 %dec3386, 0
174
br i1 %cmp198, label %while.body200, label %while.end1465
177
br label %for.cond357
180
%cmp476 = icmp eq i8 undef, 0
181
br i1 %cmp476, label %if.end517, label %do.body479.preheader
183
do.body479.preheader:
184
%cmp4833314 = icmp eq i8 undef, 0
185
br i1 %cmp4833314, label %if.end517, label %land.rhs485
188
%incdec.ptr4803316 = phi i8* [ %incdec.ptr480, %do.body479.backedge.land.rhs485_crit_edge ], [ undef, %do.body479.preheader ]
189
%isascii.i.i27763151 = icmp sgt i8 undef, -1
190
br i1 %isascii.i.i27763151, label %cond.true.i.i2780, label %cond.false.i.i2782
193
br i1 undef, label %land.lhs.true490, label %lor.rhs500
199
br i1 false, label %lor.rhs500, label %do.body479.backedge
203
; Make sure that we don't hoist the spill to outer loops.
204
; CHECK: movq %r{{.*}}, {{[0-9]+}}(%rsp)
205
; CHECK: callq {{.*}}maskrune
206
%call3.i.i2792 = call i32 @__maskrune(i32 undef, i64 256)
207
br i1 undef, label %land.lhs.true504, label %do.body479.backedge
210
br i1 undef, label %do.body479.backedge, label %if.end517
213
%incdec.ptr480 = getelementptr i8, i8* %incdec.ptr4803316, i64 1
214
%cmp483 = icmp eq i8 undef, 0
215
br i1 %cmp483, label %if.end517, label %do.body479.backedge.land.rhs485_crit_edge
217
do.body479.backedge.land.rhs485_crit_edge:
218
br label %land.rhs485
221
%q.4 = phi i8* [ undef, %sw.bb474 ], [ undef, %do.body479.preheader ], [ %incdec.ptr480, %do.body479.backedge ], [ %incdec.ptr4803316, %land.lhs.true504 ]
222
switch i32 %last.13371, label %if.then532 [
223
i32 383, label %for.cond534
224
i32 356, label %for.cond534
225
i32 324, label %for.cond534
226
i32 24, label %for.cond534
227
i32 11, label %for.cond534
231
store i8 0, i8* getelementptr inbounds ([512 x i8], [512 x i8]* @SyFgets.yank, i64 0, i64 0), align 16, !tbaa !5
232
br label %for.cond534
235
%cmp536 = icmp eq i8 undef, 0
236
br i1 %cmp536, label %for.cond542.preheader, label %for.cond534
238
for.cond542.preheader:
239
br i1 undef, label %for.body545, label %for.end552
242
br i1 undef, label %for.end552, label %for.body545
245
%s.2.lcssa = phi i8* [ undef, %for.cond542.preheader ], [ %q.4, %for.body545 ]
246
%sub.ptr.lhs.cast553 = ptrtoint i8* %s.2.lcssa to i64
247
%sub.ptr.sub555 = sub i64 %sub.ptr.lhs.cast553, 0
248
%arrayidx556 = getelementptr i8, i8* null, i64 %sub.ptr.sub555
249
store i8 0, i8* %arrayidx556, align 1, !tbaa !5
250
br label %while.cond197.backedge
253
br label %while.cond197.backedge
256
br label %while.cond661
259
br label %while.cond864
262
br i1 undef, label %if.then959, label %while.cond197.backedge
265
br label %while.cond962
268
br label %while.cond962
271
br label %while.cond197.backedge
280
br label %while.cond197.backedge
283
br i1 false, label %for.body1139, label %for.cond1145.preheader
285
for.cond1145.preheader:
286
br i1 %cmp293427, label %for.body1150.lr.ph, label %while.cond197.backedge
295
br label %while.cond197.backedge
298
%oldc.1.lcssa = phi i32 [ 0, %do.end ], [ %oldc.1.be, %while.cond197.backedge ]
299
%ch.21.lcssa = phi i32 [ %..ch.19, %do.end ], [ %last.1.be, %while.cond197.backedge ]
300
switch i32 %ch.21.lcssa, label %for.cond1480.preheader [
301
i32 -1, label %if.then1477
302
i32 15, label %if.then1477
303
i32 13, label %if.then1477
304
i32 10, label %if.then1477
307
for.cond1480.preheader:
308
br i1 undef, label %for.body1606.lr.ph, label %for.end1609
311
%p.1.lcssa3539 = phi i8* [ null, %while.end1465 ], [ null, %while.end1465 ], [ null, %while.end1465 ], [ null, %while.end1465 ], [ %line, %while.body200 ]
312
%call1.i3057 = call i64 @"\01_write"(i32 undef, i8* undef, i64 1)
313
%sub.ptr.lhs.cast1717 = ptrtoint i8* %p.1.lcssa3539 to i64
314
%sub.ptr.sub1719 = sub i64 %sub.ptr.lhs.cast1717, %sub.ptr.rhs.cast646
315
%idx.neg1727 = sub i64 0, %sub.ptr.sub1719
316
br label %for.body1723
319
br label %for.end1609
322
br i1 undef, label %for.cond1659.preheader, label %land.lhs.true1614
325
br label %for.cond1659.preheader
327
for.cond1659.preheader:
328
%cmp16623414 = icmp ult i8* undef, %add.ptr1603
329
br i1 %cmp16623414, label %for.body1664.lr.ph, label %while.body1703.lr.ph
332
%cmp16773405 = icmp slt i64 undef, undef
333
br i1 %cmp16773405, label %while.body1679, label %while.cond1683.preheader
335
while.body1703.lr.ph:
338
while.cond1683.preheader:
339
br i1 undef, label %while.body1691, label %while.end1693
342
%oldc.43406 = phi i32 [ %inc, %syEchoch.exit3070 ], [ %oldc.1.lcssa, %for.body1664.lr.ph ]
343
%4 = load %struct.TMP.2*, %struct.TMP.2** %echo.i3101, align 8, !tbaa !6
344
%call.i3062 = call i32 @fileno(%struct.TMP.2* %4)
345
br i1 undef, label %if.then.i3069, label %syEchoch.exit3070
348
br label %syEchoch.exit3070
351
%inc = add i32 %oldc.43406, 1
352
%conv1672 = sext i32 %inc to i64
353
%cmp1677 = icmp slt i64 %conv1672, undef
354
br i1 %cmp1677, label %while.body1679, label %while.cond1683.preheader
363
%q.303203 = phi i8* [ getelementptr inbounds ([8192 x i8], [8192 x i8]* @syHistory, i64 0, i64 8189), %if.then1477 ], [ %incdec.ptr1730, %for.body1723 ]
364
%add.ptr1728 = getelementptr i8, i8* %q.303203, i64 %idx.neg1727
365
%5 = load i8, i8* %add.ptr1728, align 1, !tbaa !5
366
%incdec.ptr1730 = getelementptr i8, i8* %q.303203, i64 -1
367
br label %for.body1723
373
declare i32 @fileno(%struct.TMP.2* nocapture)
374
declare i64 @"\01_write"(i32, i8*, i64)
375
declare i32 @__maskrune(i32, i64)
376
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1)
380
!0 = !{!"clang version 3.5.0 (trunk 204257)"}
381
!1 = !{!2, !2, i64 0}
382
!2 = !{!"int", !3, i64 0}
383
!3 = !{!"omnipotent char", !4, i64 0}
384
!4 = !{!"Simple C/C++ TBAA"}
385
!5 = !{!3, !3, i64 0}
386
!6 = !{!7, !8, i64 8}
387
!7 = !{!"", !8, i64 0, !8, i64 8, !3, i64 16}
388
!8 = !{!"any pointer", !3, i64 0}