1; RUN: llc < %s -mtriple=x86_64-apple-macosx -regalloc=greedy | FileCheck %s
2
3; This testing case is reduced from 197.parser prune_match function.
4; We make sure register copies are not generated on isupper.exit blocks.
5
6; CHECK: isupper.exit
7; CHECK-NEXT: in Loop
8; CHECK-NEXT: testl
9; CHECK-NEXT: jne
10; CHECK: isupper.exit
11; CHECK-NEXT: in Loop
12; CHECK-NEXT: testl
13; CHECK-NEXT: je
14; CHECK: maskrune
15; CHECK: maskrune
16
17%struct.List_o_links_struct = type { i32, i32, i32, %struct.List_o_links_struct* }
18%struct.Connector_struct = type { i16, i16, i8, i8, %struct.Connector_struct*, i8* }
19%struct._RuneLocale = type { [8 x i8], [32 x i8], i32 (i8*, i64, i8**)*, i32 (i32, i8*, i64, i8**)*, i32, [256 x i32], [256 x i32], [256 x i32], %struct._RuneRange, %struct._RuneRange, %struct._RuneRange, i8*, i32, i32, %struct._RuneCharClass* }
20%struct._RuneRange = type { i32, %struct._RuneEntry* }
21%struct._RuneEntry = type { i32, i32, i32, i32* }
22%struct._RuneCharClass = type { [14 x i8], i32 }
23%struct.Exp_struct = type { i8, i8, i8, i8, %union.anon }
24%union.anon = type { %struct.E_list_struct* }
25%struct.E_list_struct = type { %struct.E_list_struct*, %struct.Exp_struct* }
26%struct.domain_struct = type { i8*, i32, %struct.List_o_links_struct*, i32, i32, %struct.d_tree_leaf_struct*, %struct.domain_struct* }
27%struct.d_tree_leaf_struct = type { %struct.domain_struct*, i32, %struct.d_tree_leaf_struct* }
28@_DefaultRuneLocale = external global %struct._RuneLocale
29declare i32 @__maskrune(i32, i64) #7
30define fastcc i32 @prune_match(%struct.Connector_struct* nocapture readonly %a, %struct.Connector_struct* nocapture readonly %b) #9 {
31entry:
32  %label56 = bitcast %struct.Connector_struct* %a to i16*
33  %0 = load i16, i16* %label56, align 2
34  %label157 = bitcast %struct.Connector_struct* %b to i16*
35  %1 = load i16, i16* %label157, align 2
36  %cmp = icmp eq i16 %0, %1
37  br i1 %cmp, label %if.end, label %return, !prof !988
38if.end:
39  %priority = getelementptr inbounds %struct.Connector_struct, %struct.Connector_struct* %a, i64 0, i32 2
40  %2 = load i8, i8* %priority, align 1
41  %priority5 = getelementptr inbounds %struct.Connector_struct, %struct.Connector_struct* %b, i64 0, i32 2
42  %3 = load i8, i8* %priority5, align 1
43  %string = getelementptr inbounds %struct.Connector_struct, %struct.Connector_struct* %a, i64 0, i32 5
44  %4 = load i8*, i8** %string, align 8
45  %string7 = getelementptr inbounds %struct.Connector_struct, %struct.Connector_struct* %b, i64 0, i32 5
46  %5 = load i8*, i8** %string7, align 8
47  br label %while.cond
48while.cond:
49  %lsr.iv27 = phi i64 [ %lsr.iv.next28, %if.end17 ], [ 0, %if.end ]
50  %scevgep55 = getelementptr i8, i8* %4, i64 %lsr.iv27
51  %6 = load i8, i8* %scevgep55, align 1
52  %idxprom.i.i = sext i8 %6 to i64
53  %isascii.i.i224 = icmp sgt i8 %6, -1
54  br i1 %isascii.i.i224, label %cond.true.i.i, label %cond.false.i.i, !prof !181
55cond.true.i.i:
56  %arrayidx.i.i = getelementptr inbounds %struct._RuneLocale, %struct._RuneLocale* @_DefaultRuneLocale, i64 0, i32 5, i64 %idxprom.i.i
57  %7 = load i32, i32* %arrayidx.i.i, align 4
58  %and.i.i = and i32 %7, 32768
59  br label %isupper.exit
60cond.false.i.i:
61  %8 = trunc i64 %idxprom.i.i to i8
62  %conv8 = sext i8 %8 to i32
63  %call3.i.i = tail call i32 @__maskrune(i32 %conv8, i64 32768) #3
64  br label %isupper.exit
65isupper.exit:
66  %tobool1.sink.i.in.i = phi i32 [ %and.i.i, %cond.true.i.i ], [ %call3.i.i, %cond.false.i.i ]
67  %tobool1.sink.i.i = icmp eq i32 %tobool1.sink.i.in.i, 0
68  br i1 %tobool1.sink.i.i, label %lor.rhs, label %while.body, !prof !989
69lor.rhs:
70  %sunkaddr = ptrtoint i8* %5 to i64
71  %sunkaddr58 = add i64 %sunkaddr, %lsr.iv27
72  %sunkaddr59 = inttoptr i64 %sunkaddr58 to i8*
73  %9 = load i8, i8* %sunkaddr59, align 1
74  %idxprom.i.i214 = sext i8 %9 to i64
75  %isascii.i.i213225 = icmp sgt i8 %9, -1
76  br i1 %isascii.i.i213225, label %cond.true.i.i217, label %cond.false.i.i219, !prof !181
77cond.true.i.i217:
78  %arrayidx.i.i215 = getelementptr inbounds %struct._RuneLocale, %struct._RuneLocale* @_DefaultRuneLocale, i64 0, i32 5, i64 %idxprom.i.i214
79  %10 = load i32, i32* %arrayidx.i.i215, align 4
80  %and.i.i216 = and i32 %10, 32768
81  br label %isupper.exit223
82cond.false.i.i219:
83  %11 = trunc i64 %idxprom.i.i214 to i8
84  %conv9 = sext i8 %11 to i32
85  %call3.i.i218 = tail call i32 @__maskrune(i32 %conv9, i64 32768) #3
86  br label %isupper.exit223
87isupper.exit223:
88  %tobool1.sink.i.in.i220 = phi i32 [ %and.i.i216, %cond.true.i.i217 ], [ %call3.i.i218, %cond.false.i.i219 ]
89  %tobool1.sink.i.i221 = icmp eq i32 %tobool1.sink.i.in.i220, 0
90  br i1 %tobool1.sink.i.i221, label %while.end, label %while.body, !prof !990
91while.body:
92  %sunkaddr60 = ptrtoint i8* %4 to i64
93  %sunkaddr61 = add i64 %sunkaddr60, %lsr.iv27
94  %sunkaddr62 = inttoptr i64 %sunkaddr61 to i8*
95  %12 = load i8, i8* %sunkaddr62, align 1
96  %sunkaddr63 = ptrtoint i8* %5 to i64
97  %sunkaddr64 = add i64 %sunkaddr63, %lsr.iv27
98  %sunkaddr65 = inttoptr i64 %sunkaddr64 to i8*
99  %13 = load i8, i8* %sunkaddr65, align 1
100  %cmp14 = icmp eq i8 %12, %13
101  br i1 %cmp14, label %if.end17, label %return, !prof !991
102if.end17:
103  %lsr.iv.next28 = add i64 %lsr.iv27, 1
104  br label %while.cond
105while.end:
106  %14 = or i8 %3, %2
107  %15 = icmp eq i8 %14, 0
108  br i1 %15, label %if.then23, label %if.else88, !prof !992
109if.then23:
110  %sunkaddr66 = ptrtoint %struct.Connector_struct* %a to i64
111  %sunkaddr67 = add i64 %sunkaddr66, 16
112  %sunkaddr68 = inttoptr i64 %sunkaddr67 to i8**
113  %16 = load i8*, i8** %sunkaddr68, align 8
114  %17 = load i8, i8* %16, align 1
115  %cmp26 = icmp eq i8 %17, 83
116  %sunkaddr69 = ptrtoint i8* %4 to i64
117  %sunkaddr70 = add i64 %sunkaddr69, %lsr.iv27
118  %sunkaddr71 = inttoptr i64 %sunkaddr70 to i8*
119  %18 = load i8, i8* %sunkaddr71, align 1
120  br i1 %cmp26, label %land.lhs.true28, label %while.cond59.preheader, !prof !993
121land.lhs.true28:
122  switch i8 %18, label %land.rhs.preheader [
123    i8 112, label %land.lhs.true35
124    i8 0, label %return
125  ], !prof !994
126land.lhs.true35:
127  %sunkaddr72 = ptrtoint i8* %5 to i64
128  %sunkaddr73 = add i64 %sunkaddr72, %lsr.iv27
129  %sunkaddr74 = inttoptr i64 %sunkaddr73 to i8*
130  %19 = load i8, i8* %sunkaddr74, align 1
131  switch i8 %19, label %land.rhs.preheader [
132    i8 112, label %land.lhs.true43
133  ], !prof !995
134land.lhs.true43:
135  %20 = ptrtoint i8* %16 to i64
136  %21 = sub i64 0, %20
137  %scevgep52 = getelementptr i8, i8* %4, i64 %21
138  %scevgep53 = getelementptr i8, i8* %scevgep52, i64 %lsr.iv27
139  %scevgep54 = getelementptr i8, i8* %scevgep53, i64 -1
140  %cmp45 = icmp eq i8* %scevgep54, null
141  br i1 %cmp45, label %return, label %lor.lhs.false47, !prof !996
142lor.lhs.false47:
143  %22 = ptrtoint i8* %16 to i64
144  %23 = sub i64 0, %22
145  %scevgep47 = getelementptr i8, i8* %4, i64 %23
146  %scevgep48 = getelementptr i8, i8* %scevgep47, i64 %lsr.iv27
147  %scevgep49 = getelementptr i8, i8* %scevgep48, i64 -2
148  %cmp50 = icmp eq i8* %scevgep49, null
149  br i1 %cmp50, label %land.lhs.true52, label %while.cond59.preheader, !prof !997
150land.lhs.true52:
151  %sunkaddr75 = ptrtoint i8* %4 to i64
152  %sunkaddr76 = add i64 %sunkaddr75, %lsr.iv27
153  %sunkaddr77 = add i64 %sunkaddr76, -1
154  %sunkaddr78 = inttoptr i64 %sunkaddr77 to i8*
155  %24 = load i8, i8* %sunkaddr78, align 1
156  %cmp55 = icmp eq i8 %24, 73
157  %cmp61233 = icmp eq i8 %18, 0
158  %or.cond265 = or i1 %cmp55, %cmp61233
159  br i1 %or.cond265, label %return, label %land.rhs.preheader, !prof !998
160while.cond59.preheader:
161  %cmp61233.old = icmp eq i8 %18, 0
162  br i1 %cmp61233.old, label %return, label %land.rhs.preheader, !prof !999
163land.rhs.preheader:
164  %scevgep33 = getelementptr i8, i8* %5, i64 %lsr.iv27
165  %scevgep43 = getelementptr i8, i8* %4, i64 %lsr.iv27
166  br label %land.rhs
167land.rhs:
168  %lsr.iv = phi i64 [ 0, %land.rhs.preheader ], [ %lsr.iv.next, %if.then83 ]
169  %25 = phi i8 [ %27, %if.then83 ], [ %18, %land.rhs.preheader ]
170  %scevgep34 = getelementptr i8, i8* %scevgep33, i64 %lsr.iv
171  %26 = load i8, i8* %scevgep34, align 1
172  %cmp64 = icmp eq i8 %26, 0
173  br i1 %cmp64, label %return, label %while.body66, !prof !1000
174while.body66:
175  %cmp68 = icmp eq i8 %25, 42
176  %cmp72 = icmp eq i8 %26, 42
177  %or.cond = or i1 %cmp68, %cmp72
178  br i1 %or.cond, label %if.then83, label %lor.lhs.false74, !prof !1001
179lor.lhs.false74:
180  %cmp77 = icmp ne i8 %25, %26
181  %cmp81 = icmp eq i8 %25, 94
182  %or.cond208 = or i1 %cmp77, %cmp81
183  br i1 %or.cond208, label %return, label %if.then83, !prof !1002
184if.then83:
185  %scevgep44 = getelementptr i8, i8* %scevgep43, i64 %lsr.iv
186  %scevgep45 = getelementptr i8, i8* %scevgep44, i64 1
187  %27 = load i8, i8* %scevgep45, align 1
188  %cmp61 = icmp eq i8 %27, 0
189  %lsr.iv.next = add i64 %lsr.iv, 1
190  br i1 %cmp61, label %return, label %land.rhs, !prof !999
191if.else88:
192  %cmp89 = icmp eq i8 %2, 1
193  %cmp92 = icmp eq i8 %3, 2
194  %or.cond159 = and i1 %cmp89, %cmp92
195  br i1 %or.cond159, label %while.cond95.preheader, label %if.else123, !prof !1003
196while.cond95.preheader:
197  %sunkaddr79 = ptrtoint i8* %4 to i64
198  %sunkaddr80 = add i64 %sunkaddr79, %lsr.iv27
199  %sunkaddr81 = inttoptr i64 %sunkaddr80 to i8*
200  %28 = load i8, i8* %sunkaddr81, align 1
201  %cmp97238 = icmp eq i8 %28, 0
202  br i1 %cmp97238, label %return, label %land.rhs99.preheader, !prof !1004
203land.rhs99.preheader:
204  %scevgep31 = getelementptr i8, i8* %5, i64 %lsr.iv27
205  %scevgep40 = getelementptr i8, i8* %4, i64 %lsr.iv27
206  br label %land.rhs99
207land.rhs99:
208  %lsr.iv17 = phi i64 [ 0, %land.rhs99.preheader ], [ %lsr.iv.next18, %if.then117 ]
209  %29 = phi i8 [ %31, %if.then117 ], [ %28, %land.rhs99.preheader ]
210  %scevgep32 = getelementptr i8, i8* %scevgep31, i64 %lsr.iv17
211  %30 = load i8, i8* %scevgep32, align 1
212  %cmp101 = icmp eq i8 %30, 0
213  br i1 %cmp101, label %return, label %while.body104, !prof !1005
214while.body104:
215  %cmp107 = icmp eq i8 %29, %30
216  %cmp111 = icmp eq i8 %29, 42
217  %or.cond209 = or i1 %cmp107, %cmp111
218  %cmp115 = icmp eq i8 %30, 94
219  %or.cond210 = or i1 %or.cond209, %cmp115
220  br i1 %or.cond210, label %if.then117, label %return, !prof !1006
221if.then117:
222  %scevgep41 = getelementptr i8, i8* %scevgep40, i64 %lsr.iv17
223  %scevgep42 = getelementptr i8, i8* %scevgep41, i64 1
224  %31 = load i8, i8* %scevgep42, align 1
225  %cmp97 = icmp eq i8 %31, 0
226  %lsr.iv.next18 = add i64 %lsr.iv17, 1
227  br i1 %cmp97, label %return, label %land.rhs99, !prof !1004
228if.else123:
229  %cmp124 = icmp eq i8 %3, 1
230  %cmp127 = icmp eq i8 %2, 2
231  %or.cond160 = and i1 %cmp124, %cmp127
232  br i1 %or.cond160, label %while.cond130.preheader, label %return, !prof !1007
233while.cond130.preheader:
234  %sunkaddr82 = ptrtoint i8* %4 to i64
235  %sunkaddr83 = add i64 %sunkaddr82, %lsr.iv27
236  %sunkaddr84 = inttoptr i64 %sunkaddr83 to i8*
237  %32 = load i8, i8* %sunkaddr84, align 1
238  %cmp132244 = icmp eq i8 %32, 0
239  br i1 %cmp132244, label %return, label %land.rhs134.preheader, !prof !1008
240land.rhs134.preheader:
241  %scevgep29 = getelementptr i8, i8* %5, i64 %lsr.iv27
242  %scevgep37 = getelementptr i8, i8* %4, i64 %lsr.iv27
243  br label %land.rhs134
244land.rhs134:
245  %lsr.iv22 = phi i64 [ 0, %land.rhs134.preheader ], [ %lsr.iv.next23, %if.then152 ]
246  %33 = phi i8 [ %35, %if.then152 ], [ %32, %land.rhs134.preheader ]
247  %scevgep30 = getelementptr i8, i8* %scevgep29, i64 %lsr.iv22
248  %34 = load i8, i8* %scevgep30, align 1
249  %cmp136 = icmp eq i8 %34, 0
250  br i1 %cmp136, label %return, label %while.body139, !prof !1009
251while.body139:
252  %cmp142 = icmp eq i8 %33, %34
253  %cmp146 = icmp eq i8 %34, 42
254  %or.cond211 = or i1 %cmp142, %cmp146
255  %cmp150 = icmp eq i8 %33, 94
256  %or.cond212 = or i1 %or.cond211, %cmp150
257  br i1 %or.cond212, label %if.then152, label %return, !prof !1010
258if.then152:
259  %scevgep38 = getelementptr i8, i8* %scevgep37, i64 %lsr.iv22
260  %scevgep39 = getelementptr i8, i8* %scevgep38, i64 1
261  %35 = load i8, i8* %scevgep39, align 1
262  %cmp132 = icmp eq i8 %35, 0
263  %lsr.iv.next23 = add i64 %lsr.iv22, 1
264  br i1 %cmp132, label %return, label %land.rhs134, !prof !1008
265return:
266  %retval.0 = phi i32 [ 0, %entry ], [ 1, %land.lhs.true52 ], [ 1, %land.lhs.true43 ], [ 0, %if.else123 ], [ 1, %while.cond59.preheader ], [ 1, %while.cond95.preheader ], [ 1, %while.cond130.preheader ], [ 1, %land.lhs.true28 ], [ 1, %if.then83 ], [ 0, %lor.lhs.false74 ], [ 1, %land.rhs ], [ 1, %if.then117 ], [ 0, %while.body104 ], [ 1, %land.rhs99 ], [ 1, %if.then152 ], [ 0, %while.body139 ], [ 1, %land.rhs134 ], [ 0, %while.body ]
267  ret i32 %retval.0
268}
269!181 = !{!"branch_weights", i32 662038, i32 1}
270!988 = !{!"branch_weights", i32 12091450, i32 1916}
271!989 = !{!"branch_weights", i32 7564670, i32 4526781}
272!990 = !{!"branch_weights", i32 7484958, i32 13283499}
273!991 = !{!"branch_weights", i32 8677007, i32 4606493}
274!992 = !{!"branch_weights", i32 -1172426948, i32 145094705}
275!993 = !{!"branch_weights", i32 1468914, i32 5683688}
276!994 = !{!"branch_weights", i32 114025221, i32 -1217548794, i32 -1199521551, i32 87712616}
277!995 = !{!"branch_weights", i32 1853716452, i32 -444717951, i32 932776759}
278!996 = !{!"branch_weights", i32 1004870, i32 20259}
279!997 = !{!"branch_weights", i32 20071, i32 189}
280!998 = !{!"branch_weights", i32 -1020255939, i32 572177766}
281!999 = !{!"branch_weights", i32 2666513, i32 3466431}
282!1000 = !{!"branch_weights", i32 5117635, i32 1859780}
283!1001 = !{!"branch_weights", i32 354902465, i32 -1444604407}
284!1002 = !{!"branch_weights", i32 -1762419279, i32 1592770684}
285!1003 = !{!"branch_weights", i32 1435905930, i32 -1951930624}
286!1004 = !{!"branch_weights", i32 1, i32 504888}
287!1005 = !{!"branch_weights", i32 94662, i32 504888}
288!1006 = !{!"branch_weights", i32 -1897793104, i32 160196332}
289!1007 = !{!"branch_weights", i32 2074643678, i32 -29579071}
290!1008 = !{!"branch_weights", i32 1, i32 226163}
291!1009 = !{!"branch_weights", i32 58357, i32 226163}
292!1010 = !{!"branch_weights", i32 -2072848646, i32 92907517}
293