| ; ModuleID = 'array.c' |
| ; |
| ; From (clang -g -c -O1): |
| ; |
| ; void f(int* p) { |
| ; p[0] = 42; |
| ; } |
| ; |
| ; int main(int argc, char** argv) { |
| ; int array[4] = { 0, 1, 2, 3 }; |
| ; f(array); |
| ; return array[0]; |
| ; } |
| ; |
| ; RUN: llc -filetype=asm %s -o - | FileCheck %s |
| ; RUN: llc -filetype=obj %s -o - | llvm-dwarfdump -v - --debug-info | FileCheck %s --check-prefix=DWARF |
| |
| ; CHECK-LABEL: _main: |
| ; CHECK: movaps {{.*}}, (%rsp) |
| ; CHECK: movq %rsp, %rdi |
| ; CHECK: callq _f |
| |
| ; DWARF: DW_TAG_variable |
| ; DWARF-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_fbreg +0) |
| ; DWARF-NEXT: DW_AT_name [DW_FORM_strp] ( {{.*}} = "array") |
| |
| ; ModuleID = '/tmp/array.c' |
| source_filename = "/tmp/array.c" |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.12.0" |
| |
| @main.array = private unnamed_addr constant [4 x i32] [i32 0, i32 1, i32 2, i32 3], align 16 |
| |
| ; Function Attrs: nounwind ssp uwtable |
| define void @f(i32* nocapture %p) local_unnamed_addr #0 !dbg !8 { |
| entry: |
| tail call void @llvm.dbg.value(metadata i32* %p, metadata !14, metadata !15), !dbg !16 |
| store i32 42, i32* %p, align 4, !dbg !17, !tbaa !18 |
| ret void, !dbg !22 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| ; Function Attrs: nounwind ssp uwtable |
| define i32 @main(i32 %argc, i8** nocapture readnone %argv) local_unnamed_addr #0 !dbg !23 { |
| entry: |
| %array = alloca [4 x i32], align 16 |
| tail call void @llvm.dbg.value(metadata i32 %argc, metadata !30, metadata !15), !dbg !36 |
| tail call void @llvm.dbg.value(metadata i8** %argv, metadata !31, metadata !15), !dbg !37 |
| %0 = bitcast [4 x i32]* %array to i8*, !dbg !38 |
| call void @llvm.lifetime.start.p0i8(i64 16, i8* nonnull %0) #3, !dbg !38 |
| tail call void @llvm.dbg.declare(metadata [4 x i32]* %array, metadata !32, metadata !15), !dbg !39 |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 16 nonnull %0, i8* align 16 bitcast ([4 x i32]* @main.array to i8*), i64 16, i1 false), !dbg !39 |
| %arraydecay = getelementptr inbounds [4 x i32], [4 x i32]* %array, i64 0, i64 0, !dbg !40 |
| call void @f(i32* nonnull %arraydecay), !dbg !41 |
| %1 = load i32, i32* %arraydecay, align 16, !dbg !42, !tbaa !18 |
| call void @llvm.lifetime.end.p0i8(i64 16, i8* nonnull %0) #3, !dbg !43 |
| ret i32 %1, !dbg !44 |
| } |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #2 |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i1) #2 |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #2 |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { nounwind ssp uwtable } |
| attributes #1 = { nounwind readnone speculatable } |
| attributes #2 = { argmemonly nounwind } |
| attributes #3 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5, !6} |
| !llvm.ident = !{!7} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 (trunk 303873) (llvm/trunk 303875)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "/tmp/array.c", directory: "/") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{i32 7, !"PIC Level", i32 2} |
| !7 = !{!"clang version 5.0.0 (trunk 303873) (llvm/trunk 303875)"} |
| !8 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !9, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !13) |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{null, !11} |
| !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64) |
| !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !13 = !{!14} |
| !14 = !DILocalVariable(name: "p", arg: 1, scope: !8, file: !1, line: 1, type: !11) |
| !15 = !DIExpression() |
| !16 = !DILocation(line: 1, column: 13, scope: !8) |
| !17 = !DILocation(line: 2, column: 8, scope: !8) |
| !18 = !{!19, !19, i64 0} |
| !19 = !{!"int", !20, i64 0} |
| !20 = !{!"omnipotent char", !21, i64 0} |
| !21 = !{!"Simple C/C++ TBAA"} |
| !22 = !DILocation(line: 3, column: 1, scope: !8) |
| !23 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 5, type: !24, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !29) |
| !24 = !DISubroutineType(types: !25) |
| !25 = !{!12, !12, !26} |
| !26 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !27, size: 64) |
| !27 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !28, size: 64) |
| !28 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) |
| !29 = !{!30, !31, !32} |
| !30 = !DILocalVariable(name: "argc", arg: 1, scope: !23, file: !1, line: 5, type: !12) |
| !31 = !DILocalVariable(name: "argv", arg: 2, scope: !23, file: !1, line: 5, type: !26) |
| !32 = !DILocalVariable(name: "array", scope: !23, file: !1, line: 6, type: !33) |
| !33 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, size: 128, elements: !34) |
| !34 = !{!35} |
| !35 = !DISubrange(count: 4) |
| !36 = !DILocation(line: 5, column: 14, scope: !23) |
| !37 = !DILocation(line: 5, column: 27, scope: !23) |
| !38 = !DILocation(line: 6, column: 3, scope: !23) |
| !39 = !DILocation(line: 6, column: 7, scope: !23) |
| !40 = !DILocation(line: 7, column: 5, scope: !23) |
| !41 = !DILocation(line: 7, column: 3, scope: !23) |
| !42 = !DILocation(line: 8, column: 10, scope: !23) |
| !43 = !DILocation(line: 9, column: 1, scope: !23) |
| !44 = !DILocation(line: 8, column: 3, scope: !23) |