Vikram TV | 859ad29 | 2015-12-16 11:09:48 +0000 | [diff] [blame] | 1 | ; RUN: llc -filetype=asm %s -o - | FileCheck %s |
| 2 | |
| 3 | ; Test the extension of debug ranges from predecessors. |
| 4 | ; Generated from the source file LiveDebugValues.c: |
| 5 | ; #include <stdio.h> |
| 6 | ; int m; |
| 7 | ; extern int inc(int n); |
| 8 | ; extern int change(int n); |
| 9 | ; extern int modify(int n); |
| 10 | ; int main(int argc, char **argv) { |
| 11 | ; int n; |
| 12 | ; if (argc != 2) |
| 13 | ; n = 2; |
| 14 | ; else |
| 15 | ; n = atoi(argv[1]); |
| 16 | ; n = change(n); |
| 17 | ; if (n > 10) { |
| 18 | ; m = modify(n); |
| 19 | ; m = m + n; // var `m' doesn't has a dbg.value |
| 20 | ; } |
| 21 | ; else |
| 22 | ; m = inc(n); // var `m' doesn't has a dbg.value |
| 23 | ; printf("m(main): %d\n", m); |
| 24 | ; return 0; |
| 25 | ; } |
| 26 | ; with clang -g -O3 -emit-llvm -c LiveDebugValues.c -S -o live-debug-values.ll |
| 27 | ; This case will also produce multiple locations but only the debug range |
| 28 | ; extension is tested here. |
| 29 | |
| 30 | ; DBG_VALUE for variable "n" is extended into BB#5 from its predecessors BB#3 |
| 31 | ; and BB#4. |
| 32 | ; CHECK: .LBB0_5: |
Vikram TV | 859ad29 | 2015-12-16 11:09:48 +0000 | [diff] [blame] | 33 | ; CHECK-NEXT: #DEBUG_VALUE: main:n <- %EBX |
Reid Kleckner | f6f04f8 | 2016-03-25 17:54:46 +0000 | [diff] [blame] | 34 | ; Other register values have been clobbered. |
| 35 | ; CHECK-NOT: #DEBUG_VALUE: |
| 36 | ; CHECK: movl %ecx, m(%rip) |
Vikram TV | 859ad29 | 2015-12-16 11:09:48 +0000 | [diff] [blame] | 37 | |
| 38 | ; ModuleID = 'LiveDebugValues.c' |
| 39 | target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| 40 | target triple = "x86_64-unknown-linux-gnu" |
| 41 | |
| 42 | @m = common global i32 0, align 4 |
| 43 | @.str = private unnamed_addr constant [13 x i8] c"m(main): %d\0A\00", align 1 |
| 44 | |
| 45 | ; Function Attrs: nounwind uwtable |
| 46 | define i32 @main(i32 %argc, i8** nocapture readonly %argv) #0 !dbg !4 { |
| 47 | entry: |
| 48 | tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !12, metadata !20), !dbg !21 |
| 49 | tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !13, metadata !20), !dbg !22 |
| 50 | %cmp = icmp eq i32 %argc, 2, !dbg !24 |
| 51 | br i1 %cmp, label %if.else, label %if.end, !dbg !26 |
| 52 | |
| 53 | if.else: ; preds = %entry |
| 54 | %arrayidx = getelementptr inbounds i8*, i8** %argv, i64 1, !dbg !27 |
| 55 | %0 = load i8*, i8** %arrayidx, align 8, !dbg !27, !tbaa !28 |
| 56 | %call = tail call i32 (i8*, ...) bitcast (i32 (...)* @atoi to i32 (i8*, ...)*)(i8* %0) #4, !dbg !32 |
| 57 | tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !14, metadata !20), !dbg !33 |
| 58 | br label %if.end |
| 59 | |
| 60 | if.end: ; preds = %entry, %if.else |
| 61 | %n.0 = phi i32 [ %call, %if.else ], [ 2, %entry ] |
| 62 | %call1 = tail call i32 @change(i32 %n.0) #4, !dbg !34 |
| 63 | tail call void @llvm.dbg.value(metadata i32 %call1, i64 0, metadata !14, metadata !20), !dbg !33 |
| 64 | %cmp2 = icmp sgt i32 %call1, 10, !dbg !35 |
| 65 | br i1 %cmp2, label %if.then.3, label %if.else.5, !dbg !37 |
| 66 | |
| 67 | if.then.3: ; preds = %if.end |
| 68 | %call4 = tail call i32 @modify(i32 %call1) #4, !dbg !38 |
| 69 | %add = add nsw i32 %call4, %call1, !dbg !40 |
| 70 | br label %if.end.7, !dbg !41 |
| 71 | |
| 72 | if.else.5: ; preds = %if.end |
| 73 | %call6 = tail call i32 @inc(i32 %call1) #4, !dbg !42 |
| 74 | br label %if.end.7 |
| 75 | |
| 76 | if.end.7: ; preds = %if.else.5, %if.then.3 |
| 77 | %storemerge = phi i32 [ %call6, %if.else.5 ], [ %add, %if.then.3 ] |
| 78 | store i32 %storemerge, i32* @m, align 4, !dbg !43, !tbaa !44 |
| 79 | %call8 = tail call i32 (i8*, ...) @printf(i8* nonnull getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %storemerge) #4, !dbg !46 |
| 80 | ret i32 0, !dbg !47 |
| 81 | } |
| 82 | |
| 83 | declare i32 @atoi(...) #1 |
| 84 | |
| 85 | declare i32 @change(i32) #1 |
| 86 | |
| 87 | declare i32 @modify(i32) #1 |
| 88 | |
| 89 | declare i32 @inc(i32) #1 |
| 90 | |
| 91 | ; Function Attrs: nounwind |
| 92 | declare i32 @printf(i8* nocapture readonly, ...) #2 |
| 93 | |
| 94 | ; Function Attrs: nounwind readnone |
| 95 | declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #3 |
| 96 | |
| 97 | attributes #0 = { nounwind uwtable } |
| 98 | attributes #1 = { nounwind } |
| 99 | attributes #2 = { nounwind } |
| 100 | attributes #3 = { nounwind readnone } |
| 101 | attributes #4 = { nounwind } |
| 102 | |
| 103 | !llvm.dbg.cu = !{!0} |
| 104 | !llvm.module.flags = !{!17, !18} |
| 105 | !llvm.ident = !{!19} |
| 106 | |
Adrian Prantl | 75819ae | 2016-04-15 15:57:41 +0000 | [diff] [blame] | 107 | !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !15) |
Vikram TV | 859ad29 | 2015-12-16 11:09:48 +0000 | [diff] [blame] | 108 | !1 = !DIFile(filename: "LiveDebugValues.c", directory: "/home/vt/julia/test/tvvikram") |
| 109 | !2 = !{} |
Adrian Prantl | 75819ae | 2016-04-15 15:57:41 +0000 | [diff] [blame] | 110 | !4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !11) |
Vikram TV | 859ad29 | 2015-12-16 11:09:48 +0000 | [diff] [blame] | 111 | !5 = !DISubroutineType(types: !6) |
| 112 | !6 = !{!7, !7, !8} |
| 113 | !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| 114 | !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64) |
| 115 | !9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64) |
| 116 | !10 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char) |
| 117 | !11 = !{!12, !13, !14} |
| 118 | !12 = !DILocalVariable(name: "argc", arg: 1, scope: !4, file: !1, line: 6, type: !7) |
| 119 | !13 = !DILocalVariable(name: "argv", arg: 2, scope: !4, file: !1, line: 6, type: !8) |
| 120 | !14 = !DILocalVariable(name: "n", scope: !4, file: !1, line: 7, type: !7) |
| 121 | !15 = !{!16} |
| 122 | !16 = !DIGlobalVariable(name: "m", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, variable: i32* @m) |
| 123 | !17 = !{i32 2, !"Dwarf Version", i32 4} |
| 124 | !18 = !{i32 2, !"Debug Info Version", i32 3} |
| 125 | !19 = !{!"clang version 3.8.0 (trunk 253049) "} |
| 126 | !20 = !DIExpression() |
| 127 | !21 = !DILocation(line: 6, column: 14, scope: !4) |
| 128 | !22 = !DILocation(line: 6, column: 27, scope: !23) |
| 129 | !23 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1) |
| 130 | !24 = !DILocation(line: 8, column: 12, scope: !25) |
| 131 | !25 = distinct !DILexicalBlock(scope: !4, file: !1, line: 8, column: 7) |
| 132 | !26 = !DILocation(line: 8, column: 7, scope: !4) |
| 133 | !27 = !DILocation(line: 11, column: 14, scope: !25) |
| 134 | !28 = !{!29, !29, i64 0} |
| 135 | !29 = !{!"any pointer", !30, i64 0} |
| 136 | !30 = !{!"omnipotent char", !31, i64 0} |
| 137 | !31 = !{!"Simple C/C++ TBAA"} |
| 138 | !32 = !DILocation(line: 11, column: 9, scope: !25) |
| 139 | !33 = !DILocation(line: 7, column: 7, scope: !23) |
| 140 | !34 = !DILocation(line: 12, column: 7, scope: !4) |
| 141 | !35 = !DILocation(line: 13, column: 9, scope: !36) |
| 142 | !36 = distinct !DILexicalBlock(scope: !4, file: !1, line: 13, column: 7) |
| 143 | !37 = !DILocation(line: 13, column: 7, scope: !4) |
| 144 | !38 = !DILocation(line: 14, column: 9, scope: !39) |
| 145 | !39 = distinct !DILexicalBlock(scope: !36, file: !1, line: 13, column: 15) |
| 146 | !40 = !DILocation(line: 15, column: 11, scope: !39) |
| 147 | !41 = !DILocation(line: 16, column: 3, scope: !39) |
| 148 | !42 = !DILocation(line: 18, column: 9, scope: !36) |
| 149 | !43 = !DILocation(line: 15, column: 7, scope: !39) |
| 150 | !44 = !{!45, !45, i64 0} |
| 151 | !45 = !{!"int", !30, i64 0} |
| 152 | !46 = !DILocation(line: 19, column: 3, scope: !4) |
| 153 | !47 = !DILocation(line: 20, column: 3, scope: !4) |