106 lines
4.8 KiB
LLVM
106 lines
4.8 KiB
LLVM
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; ModuleID = 'array.c'
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;
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; From (clang -g -c -O0):
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;
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; void f(int* p) {
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; p[0] = 42;
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; }
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;
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; int main(int argc, char** argv) {
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; int array[4] = { 0, 1, 2, 3 };
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; f(array);
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; return array[0];
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; }
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;
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; RUN: opt %s -O2 -S -o - | FileCheck %s
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; Test that we correctly lower dbg.declares for arrays.
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;
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; CHECK: define i32 @main
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; CHECK: call void @llvm.dbg.value(metadata i32 42, metadata ![[ARRAY:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32))
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; CHECK: ![[ARRAY]] = !DILocalVariable(name: "array",{{.*}} line: 6
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.9.0"
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@main.array = private unnamed_addr constant [4 x i32] [i32 0, i32 1, i32 2, i32 3], align 16
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; Function Attrs: nounwind ssp uwtable
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define void @f(i32* %p) #0 !dbg !4 {
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entry:
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%p.addr = alloca i32*, align 8
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store i32* %p, i32** %p.addr, align 8
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call void @llvm.dbg.declare(metadata i32** %p.addr, metadata !19, metadata !DIExpression()), !dbg !20
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%0 = load i32*, i32** %p.addr, align 8, !dbg !21
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%arrayidx = getelementptr inbounds i32, i32* %0, i64 0, !dbg !21
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store i32 42, i32* %arrayidx, align 4, !dbg !21
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ret void, !dbg !22
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: nounwind ssp uwtable
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define i32 @main(i32 %argc, i8** %argv) #0 !dbg !10 {
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entry:
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%retval = alloca i32, align 4
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%argc.addr = alloca i32, align 4
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%argv.addr = alloca i8**, align 8
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%array = alloca [4 x i32], align 16
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store i32 0, i32* %retval
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store i32 %argc, i32* %argc.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !23, metadata !DIExpression()), !dbg !24
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store i8** %argv, i8*** %argv.addr, align 8
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call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !25, metadata !DIExpression()), !dbg !24
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call void @llvm.dbg.declare(metadata [4 x i32]* %array, metadata !26, metadata !DIExpression()), !dbg !30
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%0 = bitcast [4 x i32]* %array to i8*, !dbg !30
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 %0, i8* align 16 bitcast ([4 x i32]* @main.array to i8*), i64 16, i1 false), !dbg !30
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%arraydecay = getelementptr inbounds [4 x i32], [4 x i32]* %array, i32 0, i32 0, !dbg !31
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call void @f(i32* %arraydecay), !dbg !31
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%arrayidx = getelementptr inbounds [4 x i32], [4 x i32]* %array, i32 0, i64 0, !dbg !32
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%1 = load i32, i32* %arrayidx, align 4, !dbg !32
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ret i32 %1, !dbg !32
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}
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; Function Attrs: nounwind
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1) #2
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attributes #0 = { nounwind ssp uwtable }
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attributes #1 = { nounwind readnone }
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attributes #2 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!16, !17}
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!llvm.ident = !{!18}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "array.c", directory: "")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "f", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2)
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!5 = !DIFile(filename: "array.c", directory: "")
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!6 = !DISubroutineType(types: !7)
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!7 = !{null, !8}
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!8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !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 = distinct !DISubprogram(name: "main", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 5, file: !1, scope: !5, type: !11, retainedNodes: !2)
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!11 = !DISubroutineType(types: !12)
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!12 = !{!9, !9, !13}
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!13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !14)
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!14 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !15)
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!15 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
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!16 = !{i32 2, !"Dwarf Version", i32 2}
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!17 = !{i32 1, !"Debug Info Version", i32 3}
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!18 = !{!"clang version 3.5.0 "}
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!19 = !DILocalVariable(name: "p", line: 1, arg: 1, scope: !4, file: !5, type: !8)
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!20 = !DILocation(line: 1, scope: !4)
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!21 = !DILocation(line: 2, scope: !4)
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!22 = !DILocation(line: 3, scope: !4)
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!23 = !DILocalVariable(name: "argc", line: 5, arg: 1, scope: !10, file: !5, type: !9)
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!24 = !DILocation(line: 5, scope: !10)
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!25 = !DILocalVariable(name: "argv", line: 5, arg: 2, scope: !10, file: !5, type: !13)
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!26 = !DILocalVariable(name: "array", line: 6, scope: !10, file: !5, type: !27)
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!27 = !DICompositeType(tag: DW_TAG_array_type, size: 128, align: 32, baseType: !9, elements: !28)
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!28 = !{!29}
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!29 = !DISubrange(count: 4)
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!30 = !DILocation(line: 6, scope: !10)
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!31 = !DILocation(line: 7, scope: !10)
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!32 = !DILocation(line: 8, scope: !10)
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