1 ; RUN: llc < %s -verify-machineinstrs
4 ; This test case contains a value that is split into two connected components
5 ; by rematerialization during coalescing. It also contains a DBG_VALUE
6 ; instruction which must be updated during
7 ; ConnectedVNInfoEqClasses::Distribute().
9 target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
10 target triple = "thumbv7-apple-ios3.0.0"
12 @c = common global i32 0, align 4
13 @b = common global i32 0, align 4
14 @a = common global i64 0, align 8
15 @d = common global i32 0, align 4
17 ; Function Attrs: nounwind ssp
18 define i32 @pr16110() #0 {
20 store i32 0, i32* @c, align 4, !dbg !21
21 br label %for.cond1.outer, !dbg !26
23 for.cond1: ; preds = %for.end9, %for.cond1.outer
24 %storemerge11 = phi i32 [ 0, %for.end9 ], [ %storemerge11.ph, %for.cond1.outer ]
25 %cmp = icmp slt i32 %storemerge11, 1, !dbg !26
26 br i1 %cmp, label %for.body2, label %for.end9, !dbg !26
28 for.body2: ; preds = %for.cond1
29 store i32 %storemerge11, i32* @b, align 4, !dbg !26
30 tail call void @llvm.dbg.value(metadata i32* null, i64 0, metadata !11, metadata !DIExpression()), !dbg !28
31 %0 = load i64, i64* @a, align 8, !dbg !29
32 %xor = xor i64 %0, %e.1.ph, !dbg !29
33 %conv3 = trunc i64 %xor to i32, !dbg !29
34 tail call void @llvm.dbg.value(metadata i32 %conv3, i64 0, metadata !10, metadata !DIExpression()), !dbg !29
35 %tobool4 = icmp eq i32 %conv3, 0, !dbg !29
36 br i1 %tobool4, label %land.end, label %land.rhs, !dbg !29
38 land.rhs: ; preds = %for.body2
39 %call = tail call i32 bitcast (i32 (...)* @fn3 to i32 ()*)() #3, !dbg !29
40 %tobool5 = icmp ne i32 %call, 0, !dbg !29
43 land.end: ; preds = %land.rhs, %for.body2
44 %1 = phi i1 [ false, %for.body2 ], [ %tobool5, %land.rhs ]
45 %land.ext = zext i1 %1 to i32
46 %call6 = tail call i32 bitcast (i32 (...)* @fn2 to i32 (i32, i32*)*)(i32 %land.ext, i32* null) #3
47 %2 = load i32, i32* @b, align 4, !dbg !26
48 %inc8 = add nsw i32 %2, 1, !dbg !26
49 %phitmp = and i64 %xor, 4294967295, !dbg !26
50 br label %for.cond1.outer, !dbg !26
52 for.cond1.outer: ; preds = %land.end, %for.cond1.preheader
53 %storemerge11.ph = phi i32 [ %inc8, %land.end ], [ 0, %for.cond1.preheader ]
54 %e.1.ph = phi i64 [ %phitmp, %land.end ], [ 0, %for.cond1.preheader ]
55 %3 = load i32, i32* @d, align 4, !dbg !31
56 %tobool10 = icmp eq i32 %3, 0, !dbg !31
59 for.end9: ; preds = %for.cond1
60 br i1 %tobool10, label %if.end, label %for.cond1, !dbg !31
62 if.end: ; preds = %for.end9
63 store i32 %storemerge11, i32* @b, align 4, !dbg !26
67 declare i32 @fn2(...) #1
69 declare i32 @fn3(...) #1
71 ; Function Attrs: nounwind readnone
72 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
74 attributes #0 = { nounwind ssp "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
75 attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
76 attributes #2 = { nounwind readnone }
77 attributes #3 = { nounwind }
80 !llvm.module.flags = !{!33}
82 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 182024) (llvm/trunk 182023)", isOptimized: true, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !15, imports: !2)
83 !1 = !DIFile(filename: "pr16110.c", directory: "/d/b")
86 !4 = distinct !DISubprogram(name: "pr16110", line: 7, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 7, file: !1, scope: !5, type: !6, function: i32 ()* @pr16110, variables: !9)
87 !5 = !DIFile(filename: "pr16110.c", directory: "/d/b")
88 !6 = !DISubroutineType(types: !7)
90 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
92 !10 = !DILocalVariable(name: "e", line: 8, scope: !4, file: !5, type: !8)
93 !11 = !DILocalVariable(name: "f", line: 13, scope: !12, file: !5, type: !14)
94 !12 = distinct !DILexicalBlock(line: 12, column: 0, file: !1, scope: !13)
95 !13 = distinct !DILexicalBlock(line: 12, column: 0, file: !1, scope: !4)
96 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !8)
97 !15 = !{!16, !18, !19, !20}
98 !16 = !DIGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !17, variable: i64* @a)
99 !17 = !DIBasicType(tag: DW_TAG_base_type, name: "long long int", size: 64, align: 32, encoding: DW_ATE_signed)
100 !18 = !DIGlobalVariable(name: "b", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8, variable: i32* @b)
101 !19 = !DIGlobalVariable(name: "c", line: 3, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8, variable: i32* @c)
102 !20 = !DIGlobalVariable(name: "d", line: 4, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8, variable: i32* @d)
103 !21 = !DILocation(line: 10, scope: !22)
104 !22 = distinct !DILexicalBlock(line: 10, column: 0, file: !1, scope: !4)
105 !26 = !DILocation(line: 12, scope: !13)
107 !28 = !DILocation(line: 13, scope: !12)
108 !29 = !DILocation(line: 14, scope: !12)
109 !31 = !DILocation(line: 16, scope: !4)
110 !32 = !DILocation(line: 18, scope: !4)
111 !33 = !{i32 1, !"Debug Info Version", i32 3}