| |
| ; RUN: llc -mtriple=x86_64-linux -O0 -filetype=obj < %s \ |
| ; RUN: | llvm-dwarfdump -v -debug-info - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-V4 %s |
| ; RUN: llc -mtriple=x86_64-linux -dwarf-version=3 -O0 -filetype=obj < %s \ |
| ; RUN: | llvm-dwarfdump -v -debug-info - | FileCheck --check-prefix=CHECK --check-prefix=CHECK-V3 %s |
| |
| ; Check that we emit DW_TAG_lexical_block and that it has the right encoding |
| ; depending on the dwarf version. |
| |
| ; CHECK: DW_TAG_lexical_block |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_low_pc [DW_FORM_addr] |
| ; CHECK-NOT: DW_TAG |
| ; CHECK-V4: DW_AT_high_pc [DW_FORM_data4] |
| ; CHECK-V3: DW_AT_high_pc [DW_FORM_addr] |
| |
| ; Test case produced from: |
| ; void b() { |
| ; if (int i = 3) |
| ; return; |
| ; } |
| |
| ; Function Attrs: nounwind uwtable |
| define void @_Z1bv() #0 !dbg !4 { |
| entry: |
| %i = alloca i32, align 4 |
| call void @llvm.dbg.declare(metadata i32* %i, metadata !11, metadata !DIExpression()), !dbg !14 |
| store i32 3, i32* %i, align 4, !dbg !14 |
| %0 = load i32, i32* %i, align 4, !dbg !14 |
| %tobool = icmp ne i32 %0, 0, !dbg !14 |
| br i1 %tobool, label %if.then, label %if.end, !dbg !14 |
| |
| if.then: ; preds = %entry |
| br label %if.end, !dbg !15 |
| |
| if.end: ; preds = %if.then, %entry |
| ret void, !dbg !16 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { nounwind readnone } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!8, !9} |
| !llvm.ident = !{!10} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) |
| !1 = !DIFile(filename: "lexical_block.cpp", directory: "/tmp/dbginfo") |
| !2 = !{} |
| !4 = distinct !DISubprogram(name: "b", linkageName: "_Z1bv", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2) |
| !5 = !DIFile(filename: "lexical_block.cpp", directory: "/tmp/dbginfo") |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{null} |
| !8 = !{i32 2, !"Dwarf Version", i32 4} |
| !9 = !{i32 1, !"Debug Info Version", i32 3} |
| !10 = !{!"clang version 3.5.0 "} |
| !11 = !DILocalVariable(name: "i", line: 2, scope: !12, file: !5, type: !13) |
| !12 = distinct !DILexicalBlock(line: 2, column: 0, file: !1, scope: !4) |
| !13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !14 = !DILocation(line: 2, scope: !12) |
| !15 = !DILocation(line: 3, scope: !12) |
| !16 = !DILocation(line: 4, scope: !4) |