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108 lines
5.0 KiB
LLVM
108 lines
5.0 KiB
LLVM
; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s -filetype=obj \
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; RUN: | llvm-dwarfdump -v -debug-info - \
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; RUN: | FileCheck %s -check-prefix=CHECK -check-prefix=DWARF4
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; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s -filetype=obj -dwarf-version=3 \
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; RUN: | llvm-dwarfdump -v -debug-info - \
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; RUN: | FileCheck %s -check-prefix=CHECK -check-prefix=DWARF3
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; DWARF4: DW_AT_location [DW_FORM_sec_offset] (0x00000000
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; DWARF4-NEXT: {{.*}}: DW_OP_breg2 RCX+0, DW_OP_deref
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; DWARF3: DW_AT_location [DW_FORM_data4] (0x00000000
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; DWARF3-NEXT: {{.*}}: DW_OP_breg2 RCX+0, DW_OP_deref
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000067] = "vla")
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; Check the DEBUG_VALUE comments for good measure.
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; RUN: llc -O0 -mtriple=x86_64-apple-darwin %s -o - -filetype=asm | FileCheck %s -check-prefix=ASM-CHECK
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; vla should have a register-indirect address at one point.
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; ASM-CHECK: DEBUG_VALUE: vla <- [DW_OP_deref] [%RCX+0]
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; ASM-CHECK: DW_OP_breg2
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; RUN: llvm-as %s -o - | llvm-dis - | FileCheck %s --check-prefix=PRETTY-PRINT
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; PRETTY-PRINT: DIExpression(DW_OP_deref)
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define void @testVLAwithSize(i32 %s) nounwind uwtable ssp !dbg !5 {
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entry:
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%s.addr = alloca i32, align 4
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%saved_stack = alloca i8*
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%i = alloca i32, align 4
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store i32 %s, i32* %s.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %s.addr, metadata !10, metadata !DIExpression()), !dbg !11
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%0 = load i32, i32* %s.addr, align 4, !dbg !12
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%1 = zext i32 %0 to i64, !dbg !12
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%2 = call i8* @llvm.stacksave(), !dbg !12
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store i8* %2, i8** %saved_stack, !dbg !12
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%vla = alloca i32, i64 %1, align 16, !dbg !12
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call void @llvm.dbg.declare(metadata i32* %vla, metadata !14, metadata !30), !dbg !18
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call void @llvm.dbg.declare(metadata i32* %i, metadata !19, metadata !DIExpression()), !dbg !20
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store i32 0, i32* %i, align 4, !dbg !21
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br label %for.cond, !dbg !21
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for.cond: ; preds = %for.inc, %entry
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%3 = load i32, i32* %i, align 4, !dbg !21
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%4 = load i32, i32* %s.addr, align 4, !dbg !21
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%cmp = icmp slt i32 %3, %4, !dbg !21
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br i1 %cmp, label %for.body, label %for.end, !dbg !21
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for.body: ; preds = %for.cond
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%5 = load i32, i32* %i, align 4, !dbg !23
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%6 = load i32, i32* %i, align 4, !dbg !23
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%mul = mul nsw i32 %5, %6, !dbg !23
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%7 = load i32, i32* %i, align 4, !dbg !23
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%idxprom = sext i32 %7 to i64, !dbg !23
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%arrayidx = getelementptr inbounds i32, i32* %vla, i64 %idxprom, !dbg !23
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store i32 %mul, i32* %arrayidx, align 4, !dbg !23
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br label %for.inc, !dbg !25
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for.inc: ; preds = %for.body
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%8 = load i32, i32* %i, align 4, !dbg !26
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%inc = add nsw i32 %8, 1, !dbg !26
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store i32 %inc, i32* %i, align 4, !dbg !26
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br label %for.cond, !dbg !26
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for.end: ; preds = %for.cond
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%9 = load i8*, i8** %saved_stack, !dbg !27
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call void @llvm.stackrestore(i8* %9), !dbg !27
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ret void, !dbg !27
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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declare i8* @llvm.stacksave() nounwind
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declare void @llvm.stackrestore(i8*) nounwind
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!29}
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!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)
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!1 = !{}
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!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, variables: !1)
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!6 = !DIFile(filename: "bar.c", directory: "/Users/echristo/tmp")
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!7 = !DISubroutineType(types: !8)
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!8 = !{null, !9}
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!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !DILocalVariable(name: "s", line: 1, arg: 1, scope: !5, file: !6, type: !9)
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!11 = !DILocation(line: 1, column: 26, scope: !5)
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!12 = !DILocation(line: 3, column: 13, scope: !13)
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!13 = distinct !DILexicalBlock(line: 2, column: 1, file: !28, scope: !5)
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!14 = !DILocalVariable(name: "vla", line: 3, scope: !13, file: !6, type: !15)
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!15 = !DICompositeType(tag: DW_TAG_array_type, align: 32, baseType: !9, elements: !16)
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!16 = !{!17}
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!17 = !DISubrange(count: -1)
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!18 = !DILocation(line: 3, column: 7, scope: !13)
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!19 = !DILocalVariable(name: "i", line: 4, scope: !13, file: !6, type: !9)
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!20 = !DILocation(line: 4, column: 7, scope: !13)
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!21 = !DILocation(line: 5, column: 8, scope: !22)
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!22 = distinct !DILexicalBlock(line: 5, column: 3, file: !28, scope: !13)
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!23 = !DILocation(line: 6, column: 5, scope: !24)
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!24 = distinct !DILexicalBlock(line: 5, column: 27, file: !28, scope: !22)
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!25 = !DILocation(line: 7, column: 3, scope: !24)
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!26 = !DILocation(line: 5, column: 22, scope: !22)
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!27 = !DILocation(line: 8, column: 1, scope: !13)
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!28 = !DIFile(filename: "bar.c", directory: "/Users/echristo/tmp")
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!29 = !{i32 1, !"Debug Info Version", i32 3}
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!30 = !DIExpression(DW_OP_deref)
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