1 ; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s -filetype=obj \
2 ; RUN: | llvm-dwarfdump -v -debug-info - \
3 ; RUN: | FileCheck %s -check-prefix=CHECK -check-prefix=DWARF4
4 ; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s -filetype=obj -dwarf-version=3 \
5 ; RUN: | llvm-dwarfdump -v -debug-info - \
6 ; RUN: | FileCheck %s -check-prefix=CHECK -check-prefix=DWARF3
8 ; DWARF4: DW_AT_location [DW_FORM_sec_offset] (0x00000000
9 ; DWARF4-NEXT: {{.*}}: DW_OP_breg1 RDX+0, DW_OP_deref
11 ; DWARF3: DW_AT_location [DW_FORM_data4] (0x00000000
12 ; DWARF3-NEXT: {{.*}}: DW_OP_breg1 RDX+0, DW_OP_deref
15 ; CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000067] = "vla")
17 ; Check the DEBUG_VALUE comments for good measure.
18 ; RUN: llc -O0 -mtriple=x86_64-apple-darwin %s -o - -filetype=asm | FileCheck %s -check-prefix=ASM-CHECK
19 ; vla should have a register-indirect address at one point.
20 ; ASM-CHECK: DEBUG_VALUE: vla <- [DW_OP_deref] [$rdx+0]
21 ; ASM-CHECK: DW_OP_breg1
23 ; RUN: llvm-as %s -o - | llvm-dis - | FileCheck %s --check-prefix=PRETTY-PRINT
24 ; PRETTY-PRINT: DIExpression(DW_OP_deref)
26 define void @testVLAwithSize(i32 %s) nounwind uwtable ssp !dbg !5 {
28 %s.addr = alloca i32, align 4
29 %saved_stack = alloca i8*
30 %i = alloca i32, align 4
31 store i32 %s, i32* %s.addr, align 4
32 call void @llvm.dbg.declare(metadata i32* %s.addr, metadata !10, metadata !DIExpression()), !dbg !11
33 %0 = load i32, i32* %s.addr, align 4, !dbg !12
34 %1 = zext i32 %0 to i64, !dbg !12
35 %2 = call i8* @llvm.stacksave(), !dbg !12
36 store i8* %2, i8** %saved_stack, !dbg !12
37 %vla = alloca i32, i64 %1, align 16, !dbg !12
38 call void @llvm.dbg.declare(metadata i32* %vla, metadata !14, metadata !30), !dbg !18
39 call void @llvm.dbg.declare(metadata i32* %i, metadata !19, metadata !DIExpression()), !dbg !20
40 store i32 0, i32* %i, align 4, !dbg !21
41 br label %for.cond, !dbg !21
43 for.cond: ; preds = %for.inc, %entry
44 %3 = load i32, i32* %i, align 4, !dbg !21
45 %4 = load i32, i32* %s.addr, align 4, !dbg !21
46 %cmp = icmp slt i32 %3, %4, !dbg !21
47 br i1 %cmp, label %for.body, label %for.end, !dbg !21
49 for.body: ; preds = %for.cond
50 %5 = load i32, i32* %i, align 4, !dbg !23
51 %6 = load i32, i32* %i, align 4, !dbg !23
52 %mul = mul nsw i32 %5, %6, !dbg !23
53 %7 = load i32, i32* %i, align 4, !dbg !23
54 %idxprom = sext i32 %7 to i64, !dbg !23
55 %arrayidx = getelementptr inbounds i32, i32* %vla, i64 %idxprom, !dbg !23
56 store i32 %mul, i32* %arrayidx, align 4, !dbg !23
57 br label %for.inc, !dbg !25
59 for.inc: ; preds = %for.body
60 %8 = load i32, i32* %i, align 4, !dbg !26
61 %inc = add nsw i32 %8, 1, !dbg !26
62 store i32 %inc, i32* %i, align 4, !dbg !26
63 br label %for.cond, !dbg !26
65 for.end: ; preds = %for.cond
66 %9 = load i8*, i8** %saved_stack, !dbg !27
67 call void @llvm.stackrestore(i8* %9), !dbg !27
71 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
73 declare i8* @llvm.stacksave() nounwind
75 declare void @llvm.stackrestore(i8*) nounwind
78 !llvm.module.flags = !{!29}
80 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 156005) (llvm/trunk 156000)", isOptimized: false, emissionKind: FullDebug, file: !28, enums: !1, retainedTypes: !1, globals: !1, imports: !1)
82 !5 = distinct !DISubprogram(name: "testVLAwithSize", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 2, file: !28, scope: !6, type: !7, retainedNodes: !1)
83 !6 = !DIFile(filename: "bar.c", directory: "/Users/echristo/tmp")
84 !7 = !DISubroutineType(types: !8)
86 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
87 !10 = !DILocalVariable(name: "s", line: 1, arg: 1, scope: !5, file: !6, type: !9)
88 !11 = !DILocation(line: 1, column: 26, scope: !5)
89 !12 = !DILocation(line: 3, column: 13, scope: !13)
90 !13 = distinct !DILexicalBlock(line: 2, column: 1, file: !28, scope: !5)
91 !14 = !DILocalVariable(name: "vla", line: 3, scope: !13, file: !6, type: !15)
92 !15 = !DICompositeType(tag: DW_TAG_array_type, align: 32, baseType: !9, elements: !16)
94 !17 = !DISubrange(count: -1)
95 !18 = !DILocation(line: 3, column: 7, scope: !13)
96 !19 = !DILocalVariable(name: "i", line: 4, scope: !13, file: !6, type: !9)
97 !20 = !DILocation(line: 4, column: 7, scope: !13)
98 !21 = !DILocation(line: 5, column: 8, scope: !22)
99 !22 = distinct !DILexicalBlock(line: 5, column: 3, file: !28, scope: !13)
100 !23 = !DILocation(line: 6, column: 5, scope: !24)
101 !24 = distinct !DILexicalBlock(line: 5, column: 27, file: !28, scope: !22)
102 !25 = !DILocation(line: 7, column: 3, scope: !24)
103 !26 = !DILocation(line: 5, column: 22, scope: !22)
104 !27 = !DILocation(line: 8, column: 1, scope: !13)
105 !28 = !DIFile(filename: "bar.c", directory: "/Users/echristo/tmp")
106 !29 = !{i32 1, !"Debug Info Version", i32 3}
107 !30 = !DIExpression(DW_OP_deref)