1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; FIXME: Fix machine verifier issues and remove -verify-machineinstrs=0. PR39440.
3 ; RUN: llc %s -O2 -mtriple=i386-unknown-linux-gnu -o - -verify-machineinstrs=0 | FileCheck %s
4 @.str = external dso_local unnamed_addr constant [6 x i8], align 1
5 @a = external dso_local local_unnamed_addr global i32, align 4
6 @h = external dso_local local_unnamed_addr global i32, align 4
7 @g = external dso_local local_unnamed_addr global i8, align 1
9 define dso_local void @fn() {
11 ; CHECK: # %bb.0: # %entry
12 ; CHECK-NEXT: pushl %ebp
13 ; CHECK-NEXT: .cfi_def_cfa_offset 8
14 ; CHECK-NEXT: pushl %ebx
15 ; CHECK-NEXT: .cfi_def_cfa_offset 12
16 ; CHECK-NEXT: pushl %edi
17 ; CHECK-NEXT: .cfi_def_cfa_offset 16
18 ; CHECK-NEXT: pushl %esi
19 ; CHECK-NEXT: .cfi_def_cfa_offset 20
20 ; CHECK-NEXT: subl $28, %esp
21 ; CHECK-NEXT: .cfi_def_cfa_offset 48
22 ; CHECK-NEXT: .cfi_offset %esi, -20
23 ; CHECK-NEXT: .cfi_offset %edi, -16
24 ; CHECK-NEXT: .cfi_offset %ebx, -12
25 ; CHECK-NEXT: .cfi_offset %ebp, -8
26 ; CHECK-NEXT: xorl %ebx, %ebx
27 ; CHECK-NEXT: # implicit-def: $ecx
28 ; CHECK-NEXT: # implicit-def: $edi
29 ; CHECK-NEXT: # implicit-def: $al
30 ; CHECK-NEXT: # kill: killed $al
31 ; CHECK-NEXT: # implicit-def: $dl
32 ; CHECK-NEXT: # implicit-def: $ebp
33 ; CHECK-NEXT: jmp .LBB0_1
34 ; CHECK-NEXT: .p2align 4, 0x90
35 ; CHECK-NEXT: .LBB0_16: # %for.inc
36 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
37 ; CHECK-NEXT: movb %dl, {{[-0-9]+}}(%e{{[sb]}}p) # 1-byte Spill
38 ; CHECK-NEXT: movb %dh, %dl
39 ; CHECK-NEXT: .LBB0_1: # %for.cond
40 ; CHECK-NEXT: # =>This Loop Header: Depth=1
41 ; CHECK-NEXT: # Child Loop BB0_20 Depth 2
42 ; CHECK-NEXT: cmpb $8, %dl
43 ; CHECK-NEXT: movb %dl, {{[-0-9]+}}(%e{{[sb]}}p) # 1-byte Spill
44 ; CHECK-NEXT: ja .LBB0_3
45 ; CHECK-NEXT: # %bb.2: # %for.cond
46 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
47 ; CHECK-NEXT: testb %bl, %bl
48 ; CHECK-NEXT: je .LBB0_3
49 ; CHECK-NEXT: # %bb.4: # %if.end
50 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
51 ; CHECK-NEXT: movl %ecx, %eax
54 ; CHECK-NEXT: movb {{[-0-9]+}}(%e{{[sb]}}p), %dl # 1-byte Reload
55 ; CHECK-NEXT: movb %cl, %dh
56 ; CHECK-NEXT: movl $0, h
57 ; CHECK-NEXT: cmpb $8, %dl
58 ; CHECK-NEXT: jg .LBB0_8
59 ; CHECK-NEXT: # %bb.5: # %if.then13
60 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
61 ; CHECK-NEXT: movl %eax, %esi
62 ; CHECK-NEXT: movl $.str, (%esp)
63 ; CHECK-NEXT: movb %dh, {{[-0-9]+}}(%e{{[sb]}}p) # 1-byte Spill
64 ; CHECK-NEXT: calll printf
65 ; CHECK-NEXT: movb {{[-0-9]+}}(%e{{[sb]}}p), %dh # 1-byte Reload
66 ; CHECK-NEXT: testb %bl, %bl
67 ; CHECK-NEXT: movl %esi, %ecx
68 ; CHECK-NEXT: # implicit-def: $eax
69 ; CHECK-NEXT: movb {{[-0-9]+}}(%e{{[sb]}}p), %dl # 1-byte Reload
70 ; CHECK-NEXT: movb %dl, {{[-0-9]+}}(%e{{[sb]}}p) # 1-byte Spill
71 ; CHECK-NEXT: movb %dh, %dl
72 ; CHECK-NEXT: jne .LBB0_16
73 ; CHECK-NEXT: jmp .LBB0_6
74 ; CHECK-NEXT: .p2align 4, 0x90
75 ; CHECK-NEXT: .LBB0_3: # %if.then
76 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
77 ; CHECK-NEXT: movl $.str, (%esp)
78 ; CHECK-NEXT: calll printf
79 ; CHECK-NEXT: movb {{[-0-9]+}}(%e{{[sb]}}p), %dl # 1-byte Reload
80 ; CHECK-NEXT: # implicit-def: $eax
81 ; CHECK-NEXT: .LBB0_6: # %for.cond35
82 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
83 ; CHECK-NEXT: testl %edi, %edi
84 ; CHECK-NEXT: je .LBB0_7
85 ; CHECK-NEXT: .LBB0_11: # %af
86 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
87 ; CHECK-NEXT: testb %bl, %bl
88 ; CHECK-NEXT: jne .LBB0_12
89 ; CHECK-NEXT: .LBB0_17: # %if.end39
90 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
91 ; CHECK-NEXT: testl %eax, %eax
92 ; CHECK-NEXT: je .LBB0_19
93 ; CHECK-NEXT: # %bb.18: # %if.then41
94 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
95 ; CHECK-NEXT: movl $0, {{[0-9]+}}(%esp)
96 ; CHECK-NEXT: movl $fn, {{[0-9]+}}(%esp)
97 ; CHECK-NEXT: movl $.str, (%esp)
98 ; CHECK-NEXT: calll printf
99 ; CHECK-NEXT: .LBB0_19: # %for.end46
100 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
101 ; CHECK-NEXT: # implicit-def: $dl
102 ; CHECK-NEXT: # implicit-def: $dh
103 ; CHECK-NEXT: # implicit-def: $ebp
104 ; CHECK-NEXT: jmp .LBB0_20
105 ; CHECK-NEXT: .p2align 4, 0x90
106 ; CHECK-NEXT: .LBB0_8: # %if.end21
107 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
108 ; CHECK-NEXT: # implicit-def: $ebp
109 ; CHECK-NEXT: jmp .LBB0_9
110 ; CHECK-NEXT: .p2align 4, 0x90
111 ; CHECK-NEXT: .LBB0_7: # in Loop: Header=BB0_1 Depth=1
112 ; CHECK-NEXT: xorl %edi, %edi
113 ; CHECK-NEXT: movb %dl, %dh
114 ; CHECK-NEXT: movb {{[-0-9]+}}(%e{{[sb]}}p), %dl # 1-byte Reload
115 ; CHECK-NEXT: .p2align 4, 0x90
116 ; CHECK-NEXT: .LBB0_20: # %for.cond47
117 ; CHECK-NEXT: # Parent Loop BB0_1 Depth=1
118 ; CHECK-NEXT: # => This Inner Loop Header: Depth=2
119 ; CHECK-NEXT: testb %bl, %bl
120 ; CHECK-NEXT: jne .LBB0_20
121 ; CHECK-NEXT: # %bb.21: # %for.cond47
122 ; CHECK-NEXT: # in Loop: Header=BB0_20 Depth=2
123 ; CHECK-NEXT: testb %bl, %bl
124 ; CHECK-NEXT: jne .LBB0_20
125 ; CHECK-NEXT: .LBB0_9: # %ae
126 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
127 ; CHECK-NEXT: testb %bl, %bl
128 ; CHECK-NEXT: jne .LBB0_10
129 ; CHECK-NEXT: # %bb.13: # %if.end26
130 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
131 ; CHECK-NEXT: xorl %ecx, %ecx
132 ; CHECK-NEXT: testb %dl, %dl
133 ; CHECK-NEXT: je .LBB0_16
134 ; CHECK-NEXT: # %bb.14: # %if.end26
135 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
136 ; CHECK-NEXT: testl %ebp, %ebp
137 ; CHECK-NEXT: jne .LBB0_16
138 ; CHECK-NEXT: # %bb.15: # %if.then31
139 ; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
140 ; CHECK-NEXT: xorl %ecx, %ecx
141 ; CHECK-NEXT: xorl %ebp, %ebp
142 ; CHECK-NEXT: jmp .LBB0_16
143 ; CHECK-NEXT: .p2align 4, 0x90
144 ; CHECK-NEXT: .LBB0_10: # in Loop: Header=BB0_1 Depth=1
145 ; CHECK-NEXT: # implicit-def: $eax
146 ; CHECK-NEXT: testb %bl, %bl
147 ; CHECK-NEXT: je .LBB0_17
148 ; CHECK-NEXT: .LBB0_12: # in Loop: Header=BB0_1 Depth=1
149 ; CHECK-NEXT: # implicit-def: $edi
150 ; CHECK-NEXT: # implicit-def: $cl
151 ; CHECK-NEXT: # kill: killed $cl
152 ; CHECK-NEXT: # implicit-def: $dl
153 ; CHECK-NEXT: # implicit-def: $ebp
154 ; CHECK-NEXT: testl %edi, %edi
155 ; CHECK-NEXT: jne .LBB0_11
156 ; CHECK-NEXT: jmp .LBB0_7
160 for.cond: ; preds = %for.inc, %entry
161 %l.0 = phi i16 [ undef, %entry ], [ 0, %for.inc ]
162 %m.0 = phi i32 [ undef, %entry ], [ %m.2, %for.inc ]
163 %i.0 = phi i32 [ undef, %entry ], [ %i.2, %for.inc ]
164 %p.0 = phi i8 [ undef, %entry ], [ %p.2, %for.inc ]
165 %k.0 = phi i8 [ undef, %entry ], [ %k.2, %for.inc ]
166 %q.0 = phi i32 [ undef, %entry ], [ %q.2, %for.inc ]
167 %cmp = icmp ugt i8 %k.0, 8
168 %or.cond61 = or i1 %cmp, undef
169 br i1 %or.cond61, label %if.then, label %if.end
171 if.then: ; preds = %for.cond
172 tail call void (i8*, ...) @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i32 0, i32 0), i64 undef)
175 if.end: ; preds = %for.cond
176 %0 = load i32, i32* @a, align 4
177 %div = sdiv i32 %m.0, %0
180 ac: ; preds = %ac, %if.end
181 br i1 undef, label %if.end9, label %ac
183 if.end9: ; preds = %ac
184 %conv3 = trunc i32 %m.0 to i8
185 %conv5 = sext i16 %l.0 to i32
186 store i32 %conv5, i32* @h, align 4
187 %cmp11 = icmp slt i8 %k.0, 9
188 br i1 %cmp11, label %if.then13, label %if.end21
190 if.then13: ; preds = %if.end9
191 tail call void (i8*, ...) @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i32 0, i32 0), i64 undef)
192 br i1 undef, label %for.inc, label %for.cond35
194 if.end21: ; preds = %if.end9
195 %1 = load i8, i8* @g, align 1
198 ae: ; preds = %for.cond47, %if.end21
199 %l.2 = phi i16 [ undef, %if.end21 ], [ 0, %for.cond47 ]
200 %i.1 = phi i32 [ %i.0, %if.end21 ], [ %i.5, %for.cond47 ]
201 %p.1 = phi i8 [ %k.0, %if.end21 ], [ %p.6, %for.cond47 ]
202 %k.1 = phi i8 [ %conv3, %if.end21 ], [ %k.6, %for.cond47 ]
203 %q.1 = phi i32 [ undef, %if.end21 ], [ %q.5, %for.cond47 ]
204 br i1 undef, label %if.end26, label %af
206 if.end26: ; preds = %ae
207 %tobool27 = icmp eq i32 %q.1, 0
208 %tobool30 = icmp ne i8 %p.1, 0
209 %or.cond = and i1 %tobool30, %tobool27
210 br i1 %or.cond, label %if.then31, label %for.inc
212 if.then31: ; preds = %if.end26
215 for.inc: ; preds = %if.then31, %if.end26, %if.then13
216 %m.2 = phi i32 [ 0, %if.then31 ], [ 0, %if.end26 ], [ %div, %if.then13 ]
217 %i.2 = phi i32 [ %i.1, %if.then31 ], [ %i.1, %if.end26 ], [ %i.0, %if.then13 ]
218 %p.2 = phi i8 [ %p.1, %if.then31 ], [ %p.1, %if.end26 ], [ undef, %if.then13 ]
219 %k.2 = phi i8 [ %k.1, %if.then31 ], [ %k.1, %if.end26 ], [ %conv3, %if.then13 ]
220 %q.2 = phi i32 [ 0, %if.then31 ], [ %q.1, %if.end26 ], [ %q.0, %if.then13 ]
221 %2 = load i32, i32* @h, align 4
224 for.cond35: ; preds = %for.inc44, %if.then13, %if.then
225 %i.3 = phi i32 [ undef, %for.inc44 ], [ %i.0, %if.then ], [ %i.0, %if.then13 ]
226 %o.2 = phi i32 [ %o.3, %for.inc44 ], [ undef, %if.then ], [ undef, %if.then13 ]
227 %p.4 = phi i8 [ undef, %for.inc44 ], [ %p.0, %if.then ], [ %k.0, %if.then13 ]
228 %k.4 = phi i8 [ undef, %for.inc44 ], [ %k.0, %if.then ], [ %conv3, %if.then13 ]
229 %q.3 = phi i32 [ undef, %for.inc44 ], [ %q.0, %if.then ], [ %q.0, %if.then13 ]
230 %tobool36 = icmp eq i32 %i.3, 0
231 br i1 %tobool36, label %for.end46, label %af
233 af: ; preds = %for.cond35, %ae
234 %i.4 = phi i32 [ %i.3, %for.cond35 ], [ %i.1, %ae ]
235 %o.3 = phi i32 [ %o.2, %for.cond35 ], [ undef, %ae ]
236 br i1 undef, label %if.end39, label %for.inc44
238 if.end39: ; preds = %af
239 %tobool40 = icmp eq i32 %o.3, 0
240 br i1 %tobool40, label %for.end46, label %if.then41
242 if.then41: ; preds = %if.end39
243 tail call void (i8*, ...) @printf(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i32 0, i32 0), i64 ptrtoint (void ()* @fn to i64))
246 for.inc44: ; preds = %af
249 for.end46: ; preds = %if.then41, %if.end39, %for.cond35
250 %i.5 = phi i32 [ %i.4, %if.then41 ], [ %i.4, %if.end39 ], [ 0, %for.cond35 ]
251 %p.6 = phi i8 [ undef, %if.then41 ], [ undef, %if.end39 ], [ %p.4, %for.cond35 ]
252 %k.6 = phi i8 [ undef, %if.then41 ], [ undef, %if.end39 ], [ %k.4, %for.cond35 ]
253 %q.5 = phi i32 [ undef, %if.then41 ], [ undef, %if.end39 ], [ %q.3, %for.cond35 ]
256 for.cond47: ; preds = %for.cond47, %for.end46
257 %brmerge = or i1 false, undef
258 br i1 %brmerge, label %for.cond47, label %ae
261 declare dso_local void @printf(i8* nocapture readonly, ...) local_unnamed_addr