Duncan P. N. Exon Smith | 7bb480d | 2015-04-16 22:27:54 +0000 | [diff] [blame] | 1 | ; RUN: llc -filetype=obj -o %t.o %s |
| 2 | ; RUN: llvm-dwarfdump -debug-dump=info %t.o | FileCheck %s |
| 3 | |
| 4 | ; Testcase generated using 'clang -O2 -S -emit-llvm' from the following: |
| 5 | ;; int *g; |
| 6 | ;; |
| 7 | ;; static __attribute__((always_inline)) int f(int a) { |
| 8 | ;; int l; |
| 9 | ;; g = &l; |
| 10 | ;; return a; |
| 11 | ;; } |
| 12 | ;; |
| 13 | ;; int main(void) { |
| 14 | ;; f(0); |
| 15 | ;; f(0); |
| 16 | ;; return 0; |
| 17 | ;; } |
| 18 | |
| 19 | ; Check that we the first call to f(0) has no inlined subroutine (since the |
| 20 | ; function is optimized out), and the second call correctly describes the |
| 21 | ; formal parameter 'a'. |
| 22 | |
| 23 | ; CHECK: DW_TAG_inlined_subroutine |
| 24 | ; CHECK-NOT: DW_TAG_inlined_subroutine |
| 25 | ; CHECK: DW_AT_low_pc |
| 26 | ; CHECK-NEXT: DW_AT_high_pc |
| 27 | ; CHECK-NOT: DW_TAG_inlined_subroutine |
| 28 | ; CHECK: DW_TAG_formal_parameter |
| 29 | ; CHECK-NEXT: DW_AT_const_value |
| 30 | ; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "a" |
| 31 | ; CHECK-NOT: DW_TAG_inlined_subroutine |
| 32 | ; CHECK: DW_TAG_variable |
| 33 | ; CHECK-NEXT: DW_AT_location |
| 34 | ; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "l" |
| 35 | |
| 36 | target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| 37 | target triple = "x86_64-apple-darwin" |
| 38 | |
| 39 | @g = common global i32* null, align 8 |
| 40 | |
| 41 | ; Function Attrs: nounwind ssp uwtable |
| 42 | define i32 @main() #0 { |
| 43 | entry: |
| 44 | %l.i2 = alloca i32, align 4 |
| 45 | tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !12, metadata !21), !dbg !22 |
| 46 | %0 = bitcast i32* %l.i2 to i8*, !dbg !24 |
| 47 | call void @llvm.lifetime.start(i64 4, i8* %0), !dbg !24 |
| 48 | tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !12, metadata !21), !dbg !24 |
| 49 | tail call void @llvm.dbg.value(metadata i32* %l.i2, i64 0, metadata !13, metadata !21), !dbg !26 |
| 50 | store i32* %l.i2, i32** @g, align 8, !dbg !27, !tbaa !28 |
| 51 | call void @llvm.lifetime.end(i64 4, i8* %0), !dbg !32 |
| 52 | ret i32 0, !dbg !33 |
| 53 | } |
| 54 | |
| 55 | ; Function Attrs: nounwind readnone |
| 56 | declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 |
| 57 | |
| 58 | ; Function Attrs: nounwind |
| 59 | declare void @llvm.lifetime.start(i64, i8* nocapture) #2 |
| 60 | |
| 61 | ; Function Attrs: nounwind |
| 62 | declare void @llvm.lifetime.end(i64, i8* nocapture) #2 |
| 63 | |
| 64 | attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="core2" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| 65 | attributes #1 = { nounwind readnone } |
| 66 | attributes #2 = { nounwind } |
| 67 | |
| 68 | !llvm.dbg.cu = !{!0} |
| 69 | !llvm.module.flags = !{!17, !18, !19} |
| 70 | !llvm.ident = !{!20} |
| 71 | |
| 72 | !0 = !MDCompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 235110) (llvm/trunk 235108)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !14, imports: !2) |
| 73 | !1 = !MDFile(filename: "t.c", directory: "/path/to/dir") |
| 74 | !2 = !{} |
| 75 | !3 = !{!4, !8} |
| 76 | !4 = !MDSubprogram(name: "main", scope: !1, file: !1, line: 9, type: !5, isLocal: false, isDefinition: true, scopeLine: 9, flags: DIFlagPrototyped, isOptimized: true, function: i32 ()* @main, variables: !2) |
| 77 | !5 = !MDSubroutineType(types: !6) |
| 78 | !6 = !{!7} |
| 79 | !7 = !MDBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| 80 | !8 = !MDSubprogram(name: "f", scope: !1, file: !1, line: 3, type: !9, isLocal: true, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, variables: !11) |
| 81 | !9 = !MDSubroutineType(types: !10) |
| 82 | !10 = !{!7, !7} |
| 83 | !11 = !{!12, !13} |
| 84 | !12 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", arg: 1, scope: !8, file: !1, line: 3, type: !7) |
| 85 | !13 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "l", scope: !8, file: !1, line: 4, type: !7) |
| 86 | !14 = !{!15} |
| 87 | !15 = !MDGlobalVariable(name: "g", scope: !0, file: !1, line: 1, type: !16, isLocal: false, isDefinition: true, variable: i32** @g) |
| 88 | !16 = !MDDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64, align: 64) |
| 89 | !17 = !{i32 2, !"Dwarf Version", i32 2} |
| 90 | !18 = !{i32 2, !"Debug Info Version", i32 3} |
| 91 | !19 = !{i32 1, !"PIC Level", i32 2} |
| 92 | !20 = !{!"clang version 3.7.0 (trunk 235110) (llvm/trunk 235108)"} |
| 93 | !21 = !MDExpression() |
| 94 | !22 = !MDLocation(line: 3, column: 49, scope: !8, inlinedAt: !23) |
| 95 | !23 = distinct !MDLocation(line: 10, column: 3, scope: !4) |
| 96 | !24 = !MDLocation(line: 3, column: 49, scope: !8, inlinedAt: !25) |
| 97 | !25 = distinct !MDLocation(line: 11, column: 3, scope: !4) |
| 98 | !26 = !MDLocation(line: 4, column: 7, scope: !8, inlinedAt: !25) |
| 99 | !27 = !MDLocation(line: 5, column: 5, scope: !8, inlinedAt: !25) |
| 100 | !28 = !{!29, !29, i64 0} |
| 101 | !29 = !{!"any pointer", !30, i64 0} |
| 102 | !30 = !{!"omnipotent char", !31, i64 0} |
| 103 | !31 = !{!"Simple C/C++ TBAA"} |
| 104 | !32 = !MDLocation(line: 11, column: 3, scope: !4) |
| 105 | !33 = !MDLocation(line: 12, column: 3, scope: !4) |