1 ; RUN: llc -mtriple=x86_64-apple-macosx10.9.0 %s -stop-after=livedebugvars \
2 ; RUN: -o - | FileCheck %s
10 ; return x; // check that x is not a constant here.
12 ; CHECK: ![[X:.*]] = !DILocalVariable(name: "x",
14 ; CHECK: DBG_VALUE 23, $noreg, ![[X]],
15 ; CHECK: DBG_VALUE $rsp, $noreg, ![[X]], !DIExpression(DW_OP_plus_uconst, 4, DW_OP_deref),
16 ; CHECK: bb.1.if.then:
17 ; CHECK: DBG_VALUE 43, $noreg, ![[X]],
19 ; CHECK-NOT: DBG_VALUE 23, $noreg, ![[X]],
22 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
23 target triple = "x86_64-apple-macosx10.11.0"
25 ; Function Attrs: nounwind ssp uwtable
26 define i32 @f() #0 !dbg !4 {
28 %x = alloca i32, align 4
29 %0 = bitcast i32* %x to i8*, !dbg !14
30 call void @llvm.lifetime.start(i64 4, i8* %0) #4, !dbg !14
31 tail call void @llvm.dbg.value(metadata i32 23, metadata !9, metadata !15), !dbg !16
32 store i32 23, i32* %x, align 4, !dbg !16, !tbaa !17
33 tail call void @llvm.dbg.value(metadata i32* %x, metadata !9, metadata !DIExpression(DW_OP_deref)), !dbg !16
34 call void @g(i32* nonnull %x) #4, !dbg !21
35 call void @llvm.dbg.value(metadata i32* %x, metadata !9, metadata !DIExpression(DW_OP_deref)), !dbg !16
36 %1 = load i32, i32* %x, align 4, !dbg !22, !tbaa !17
37 %cmp = icmp eq i32 %1, 42, !dbg !24
38 br i1 %cmp, label %if.then, label %if.end, !dbg !25
40 if.then: ; preds = %entry
41 call void @llvm.dbg.value(metadata i32 43, metadata !9, metadata !15), !dbg !16
42 store i32 43, i32* %x, align 4, !dbg !26, !tbaa !17
43 br label %if.end, !dbg !26
45 if.end: ; preds = %if.then, %entry
46 %2 = phi i32 [ 43, %if.then ], [ %1, %entry ], !dbg !27
47 call void @llvm.dbg.value(metadata i32* %x, metadata !9, metadata !DIExpression(DW_OP_deref)), !dbg !16
48 call void @llvm.lifetime.end(i64 4, i8* %0) #4, !dbg !28
52 ; Function Attrs: argmemonly nounwind
53 declare void @llvm.lifetime.start(i64, i8* nocapture) #1
55 declare void @g(i32*) #4
57 ; Function Attrs: argmemonly nounwind
58 declare void @llvm.lifetime.end(i64, i8* nocapture) #1
60 ; Function Attrs: nounwind readnone
61 declare void @llvm.dbg.value(metadata, metadata, metadata) #3
63 attributes #0 = { nounwind ssp uwtable }
64 attributes #1 = { argmemonly nounwind }
65 attributes #3 = { nounwind readnone }
66 attributes #4 = { nounwind }
69 !llvm.module.flags = !{!10, !11, !12}
72 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 255890) (llvm/trunk 255919)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
73 !1 = !DIFile(filename: "constant.c", directory: "")
75 !4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: true, unit: !0, retainedNodes: !8)
76 !5 = !DISubroutineType(types: !6)
78 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
80 !9 = !DILocalVariable(name: "x", scope: !4, file: !1, line: 3, type: !7)
81 !10 = !{i32 2, !"Dwarf Version", i32 2}
82 !11 = !{i32 2, !"Debug Info Version", i32 3}
83 !12 = !{i32 1, !"PIC Level", i32 2}
84 !13 = !{!"clang version 3.8.0 (trunk 255890) (llvm/trunk 255919)"}
85 !14 = !DILocation(line: 3, column: 3, scope: !4)
87 !16 = !DILocation(line: 3, column: 7, scope: !4)
88 !17 = !{!18, !18, i64 0}
89 !18 = !{!"int", !19, i64 0}
90 !19 = !{!"omnipotent char", !20, i64 0}
91 !20 = !{!"Simple C/C++ TBAA"}
92 !21 = !DILocation(line: 4, column: 3, scope: !4)
93 !22 = !DILocation(line: 5, column: 7, scope: !23)
94 !23 = distinct !DILexicalBlock(scope: !4, file: !1, line: 5, column: 7)
95 !24 = !DILocation(line: 5, column: 9, scope: !23)
96 !25 = !DILocation(line: 5, column: 7, scope: !4)
97 !26 = !DILocation(line: 6, column: 5, scope: !23)
98 !27 = !DILocation(line: 7, column: 10, scope: !4)
99 !28 = !DILocation(line: 8, column: 1, scope: !4)
100 !29 = !DILocation(line: 7, column: 3, scope: !4)