1 ; RUN: llc -march=mips -mcpu=mips32r2 -O1 -filetype=obj <%s | \ 2 ; RUN: llvm-dwarfdump -debug-dump=all - | FileCheck %s -check-prefix=F0 3 ; RUN: llc -march=mips -mcpu=mips32r2 -O1 -filetype=obj <%s | \ 4 ; RUN: llvm-dwarfdump -debug-dump=all - | FileCheck %s -check-prefix=F1 5 6 ; void foo(int *); 7 ; 8 ; int f0(int a, int b, int c, int d, int e) { 9 ; int x = a + b + c + d + e; 10 ; foo(&x); 11 ; return x; 12 ; } 13 ; 14 ; int f1(int a, int b, int c, int d, int e) { 15 ; int x __attribute__((aligned(16))) = a + b + c + d + e; 16 ; foo(&x); 17 ; return x; 18 ; } 19 20 declare void @llvm.lifetime.start(i64, i8* nocapture) 21 declare void @llvm.lifetime.end(i64, i8* nocapture) 22 23 declare void @foo(i32*) 24 25 ; F0: DW_AT_location [DW_FORM_sec_offset] (0x00000014) 26 ; F0: DW_AT_name [DW_FORM_strp] ( .debug_str[0x0000006b] = "x") 27 ; 28 ; x -> DW_OP_reg1(51) 29 ; F0: 0x00000014: Beginning address offset: 0x0000000000000028 30 ; F0: Ending address offset: 0x0000000000000030 31 ; F0: Location description: 51 32 33 define i32 @f0(i32 signext %a, i32 signext %b, i32 signext %c, i32 signext %d, i32 signext %e) !dbg !4 { 34 entry: 35 %x = alloca i32, align 4 36 tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !9, metadata !DIExpression()), !dbg !27 37 tail call void @llvm.dbg.value(metadata i32 %b, i64 0, metadata !10, metadata !DIExpression()), !dbg !28 38 tail call void @llvm.dbg.value(metadata i32 %c, i64 0, metadata !11, metadata !DIExpression()), !dbg !29 39 tail call void @llvm.dbg.value(metadata i32 %d, i64 0, metadata !12, metadata !DIExpression()), !dbg !30 40 tail call void @llvm.dbg.value(metadata i32 %e, i64 0, metadata !13, metadata !DIExpression()), !dbg !31 41 %0 = bitcast i32* %x to i8*, !dbg !32 42 call void @llvm.lifetime.start(i64 4, i8* %0) #4, !dbg !32 43 %add = add nsw i32 %b, %a, !dbg !33 44 %add1 = add nsw i32 %add, %c, !dbg !34 45 %add2 = add nsw i32 %add1, %d, !dbg !35 46 %add3 = add nsw i32 %add2, %e, !dbg !36 47 tail call void @llvm.dbg.value(metadata i32 %add3, i64 0, metadata !14, metadata !DIExpression()), !dbg !37 48 store i32 %add3, i32* %x, align 4, !dbg !37, !tbaa !38 49 tail call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !14, metadata !26), !dbg !37 50 call void @foo(i32* nonnull %x) #4, !dbg !42 51 call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !14, metadata !26), !dbg !37 52 %1 = load i32, i32* %x, align 4, !dbg !43, !tbaa !38 53 call void @llvm.lifetime.end(i64 4, i8* %0) #4, !dbg !44 54 ret i32 %1, !dbg !45 55 } 56 57 58 ; F1: DW_AT_location [DW_FORM_sec_offset] (0x00000033) 59 ; F1: DW_AT_name [DW_FORM_strp] ( .debug_str[0x0000006b] = "x") 60 61 ; x -> DW_OP_reg1(51) 62 ; F1: 0x00000033: Beginning address offset: 0x0000000000000080 63 ; F1: Ending address offset: 0x0000000000000088 64 ; F1: Location description: 51 65 66 define i32 @f1(i32 signext %a, i32 signext %b, i32 signext %c, i32 signext %d, i32 signext %e) !dbg !15 { 67 entry: 68 %x = alloca i32, align 16 69 tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !17, metadata !DIExpression()), !dbg !46 70 tail call void @llvm.dbg.value(metadata i32 %b, i64 0, metadata !18, metadata !DIExpression()), !dbg !47 71 tail call void @llvm.dbg.value(metadata i32 %c, i64 0, metadata !19, metadata !DIExpression()), !dbg !48 72 tail call void @llvm.dbg.value(metadata i32 %d, i64 0, metadata !20, metadata !DIExpression()), !dbg !49 73 tail call void @llvm.dbg.value(metadata i32 %e, i64 0, metadata !21, metadata !DIExpression()), !dbg !50 74 %0 = bitcast i32* %x to i8*, !dbg !51 75 call void @llvm.lifetime.start(i64 4, i8* %0) #4, !dbg !51 76 %add = add nsw i32 %b, %a, !dbg !52 77 %add1 = add nsw i32 %add, %c, !dbg !53 78 %add2 = add nsw i32 %add1, %d, !dbg !54 79 %add3 = add nsw i32 %add2, %e, !dbg !55 80 tail call void @llvm.dbg.value(metadata i32 %add3, i64 0, metadata !22, metadata !DIExpression()), !dbg !56 81 store i32 %add3, i32* %x, align 16, !dbg !56, !tbaa !38 82 tail call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !22, metadata !26), !dbg !56 83 call void @foo(i32* nonnull %x) #4, !dbg !57 84 call void @llvm.dbg.value(metadata i32* %x, i64 0, metadata !22, metadata !26), !dbg !56 85 %1 = load i32, i32* %x, align 16, !dbg !58, !tbaa !38 86 call void @llvm.lifetime.end(i64 4, i8* %0) #4, !dbg !59 87 ret i32 %1, !dbg !60 88 } 89 90 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) 91 92 !llvm.dbg.cu = !{!0} 93 !llvm.module.flags = !{!23, !24} 94 !llvm.ident = !{!25} 95 96 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 251783) (llvm/trunk 251781)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3) 97 !1 = !DIFile(filename: "test.c", directory: "/home/vk/repos/tmp/dwarf") 98 !2 = !{} 99 !3 = !{!4, !15} 100 !4 = distinct !DISubprogram(name: "f0", scope: !1, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, variables: !8) 101 !5 = !DISubroutineType(types: !6) 102 !6 = !{!7, !7, !7, !7, !7, !7} 103 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 104 !8 = !{!9, !10, !11, !12, !13, !14} 105 !9 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 4, type: !7) 106 !10 = !DILocalVariable(name: "b", arg: 2, scope: !4, file: !1, line: 4, type: !7) 107 !11 = !DILocalVariable(name: "c", arg: 3, scope: !4, file: !1, line: 4, type: !7) 108 !12 = !DILocalVariable(name: "d", arg: 4, scope: !4, file: !1, line: 4, type: !7) 109 !13 = !DILocalVariable(name: "e", arg: 5, scope: !4, file: !1, line: 4, type: !7) 110 !14 = !DILocalVariable(name: "x", scope: !4, file: !1, line: 5, type: !7) 111 !15 = distinct !DISubprogram(name: "f1", scope: !1, file: !1, line: 11, type: !5, isLocal: false, isDefinition: true, scopeLine: 11, flags: DIFlagPrototyped, isOptimized: true, variables: !16) 112 !16 = !{!17, !18, !19, !20, !21, !22} 113 !17 = !DILocalVariable(name: "a", arg: 1, scope: !15, file: !1, line: 11, type: !7) 114 !18 = !DILocalVariable(name: "b", arg: 2, scope: !15, file: !1, line: 11, type: !7) 115 !19 = !DILocalVariable(name: "c", arg: 3, scope: !15, file: !1, line: 11, type: !7) 116 !20 = !DILocalVariable(name: "d", arg: 4, scope: !15, file: !1, line: 11, type: !7) 117 !21 = !DILocalVariable(name: "e", arg: 5, scope: !15, file: !1, line: 11, type: !7) 118 !22 = !DILocalVariable(name: "x", scope: !15, file: !1, line: 12, type: !7) 119 !23 = !{i32 2, !"Dwarf Version", i32 4} 120 !24 = !{i32 2, !"Debug Info Version", i32 3} 121 !25 = !{!"clang version 3.8.0 (trunk 251783) (llvm/trunk 251781)"} 122 !26 = !DIExpression(DW_OP_deref) 123 !27 = !DILocation(line: 4, column: 12, scope: !4) 124 !28 = !DILocation(line: 4, column: 19, scope: !4) 125 !29 = !DILocation(line: 4, column: 26, scope: !4) 126 !30 = !DILocation(line: 4, column: 33, scope: !4) 127 !31 = !DILocation(line: 4, column: 40, scope: !4) 128 !32 = !DILocation(line: 5, column: 3, scope: !4) 129 !33 = !DILocation(line: 5, column: 13, scope: !4) 130 !34 = !DILocation(line: 5, column: 17, scope: !4) 131 !35 = !DILocation(line: 5, column: 21, scope: !4) 132 !36 = !DILocation(line: 5, column: 25, scope: !4) 133 !37 = !DILocation(line: 5, column: 7, scope: !4) 134 !38 = !{!39, !39, i64 0} 135 !39 = !{!"int", !40, i64 0} 136 !40 = !{!"omnipotent char", !41, i64 0} 137 !41 = !{!"Simple C/C++ TBAA"} 138 !42 = !DILocation(line: 6, column: 3, scope: !4) 139 !43 = !DILocation(line: 7, column: 10, scope: !4) 140 !44 = !DILocation(line: 8, column: 1, scope: !4) 141 !45 = !DILocation(line: 7, column: 3, scope: !4) 142 !46 = !DILocation(line: 11, column: 12, scope: !15) 143 !47 = !DILocation(line: 11, column: 19, scope: !15) 144 !48 = !DILocation(line: 11, column: 26, scope: !15) 145 !49 = !DILocation(line: 11, column: 33, scope: !15) 146 !50 = !DILocation(line: 11, column: 40, scope: !15) 147 !51 = !DILocation(line: 12, column: 3, scope: !15) 148 !52 = !DILocation(line: 12, column: 42, scope: !15) 149 !53 = !DILocation(line: 12, column: 46, scope: !15) 150 !54 = !DILocation(line: 12, column: 50, scope: !15) 151 !55 = !DILocation(line: 12, column: 54, scope: !15) 152 !56 = !DILocation(line: 12, column: 7, scope: !15) 153 !57 = !DILocation(line: 13, column: 3, scope: !15) 154 !58 = !DILocation(line: 14, column: 10, scope: !15) 155 !59 = !DILocation(line: 15, column: 1, scope: !15) 156 !60 = !DILocation(line: 14, column: 3, scope: !15) 157
