1 ; ModuleID = 'formal_parameter.c' 2 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 3 target triple = "x86_64-apple-macosx10.9.0" 4 ; 5 ; From (clang -g -c -O1): 6 ; 7 ; int lookup(int* map); 8 ; int verify(int val); 9 ; void foo(int map) 10 ; { 11 ; lookup(&map); 12 ; if (!verify(map)) { } 13 ; } 14 ; 15 ; RUN: opt %s -O2 -S -o %t 16 ; RUN: cat %t | FileCheck --check-prefix=LOWERING %s 17 ; RUN: llc -filetype=obj %t -o - | llvm-dwarfdump -debug-dump=info - | FileCheck %s 18 ; Test that we only emit only one DW_AT_formal_parameter "map" for this function. 19 ; rdar://problem/14874886 20 ; 21 ; CHECK: DW_TAG_formal_parameter 22 ; CHECK-NOT: DW_TAG 23 ; CHECK: DW_AT_name {{.*}}map 24 ; CHECK-NOT: DW_AT_name {{.*}}map 25 26 ; Function Attrs: nounwind ssp uwtable 27 define void @foo(i32 %map) #0 !dbg !4 { 28 entry: 29 %map.addr = alloca i32, align 4 30 store i32 %map, i32* %map.addr, align 4, !tbaa !15 31 call void @llvm.dbg.declare(metadata i32* %map.addr, metadata !10, metadata !DIExpression()), !dbg !14 32 %call = call i32 (i32*, ...) bitcast (i32 (...)* @lookup to i32 (i32*, ...)*)(i32* %map.addr) #3, !dbg !19 33 ; Ensure that all dbg intrinsics have the same scope after 34 ; LowerDbgDeclare is finished with them. 35 ; 36 ; LOWERING: call void @llvm.dbg.value{{.*}}, !dbg ![[LOC:.*]] 37 ; LOWERING: call void @llvm.dbg.value{{.*}}, !dbg ![[LOC]] 38 ; LOWERING: call void @llvm.dbg.value{{.*}}, !dbg ![[LOC]] 39 %0 = load i32, i32* %map.addr, align 4, !dbg !20, !tbaa !15 40 %call1 = call i32 (i32, ...) bitcast (i32 (...)* @verify to i32 (i32, ...)*)(i32 %0) #3, !dbg !20 41 ret void, !dbg !22 42 } 43 44 ; Function Attrs: nounwind readnone 45 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 46 47 declare i32 @lookup(...) 48 49 declare i32 @verify(...) 50 51 ; Function Attrs: nounwind readnone 52 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 53 54 attributes #0 = { nounwind ssp uwtable } 55 attributes #1 = { nounwind readnone } 56 attributes #3 = { nounwind } 57 58 !llvm.dbg.cu = !{!0} 59 !llvm.module.flags = !{!11, !12} 60 !llvm.ident = !{!13} 61 62 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 63 !1 = !DIFile(filename: "formal_parameter.c", directory: "") 64 !2 = !{} 65 !4 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, variables: !9) 66 !5 = !DIFile(filename: "formal_parameter.c", directory: "") 67 !6 = !DISubroutineType(types: !7) 68 !7 = !{null, !8} 69 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 70 !9 = !{!10} 71 !10 = !DILocalVariable(name: "map", line: 1, arg: 1, scope: !4, file: !5, type: !8) 72 !11 = !{i32 2, !"Dwarf Version", i32 2} 73 !12 = !{i32 1, !"Debug Info Version", i32 3} 74 !13 = !{!"clang version 3.5.0 "} 75 !14 = !DILocation(line: 1, scope: !4) 76 !15 = !{!16, !16, i64 0} 77 !16 = !{!"int", !17, i64 0} 78 !17 = !{!"omnipotent char", !18, i64 0} 79 !18 = !{!"Simple C/C++ TBAA"} 80 !19 = !DILocation(line: 3, scope: !4) 81 !20 = !DILocation(line: 4, scope: !21) 82 !21 = distinct !DILexicalBlock(line: 4, column: 0, file: !1, scope: !4) 83 !22 = !DILocation(line: 5, scope: !4) 84
