| ; RUN: llc -O2 %s -o %t -filetype=obj |
| ; RUN: llvm-dwarfdump -debug-info %t | FileCheck %s |
| |
| ; Check that Machine CSE correctly handles during the transformation, the |
| ; debug location information for variables. |
| |
| ; Generated with clang -c -g -O2 |
| |
| ; typedef float __attribute__((__vector_size__(16))) f4; |
| ; f4 get(); |
| ; int main() { |
| ; float MyVar = get()[0]; |
| ; if (MyVar) |
| ; return 1; |
| ; } |
| |
| ; ModuleID = 'test.cpp' |
| source_filename = "test.cpp" |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-pc-linux-gnu" |
| |
| define dso_local i32 @main() !dbg !7 { |
| entry: |
| %call = tail call <4 x float> @_Z3getv(), !dbg !14 |
| %vecext = extractelement <4 x float> %call, i32 0, !dbg !14 |
| call void @llvm.dbg.value(metadata float %vecext, metadata !12, metadata !DIExpression()), !dbg !15 |
| %tobool = fcmp une float %vecext, 0.000000e+00, !dbg !16 |
| %. = zext i1 %tobool to i32, !dbg !18 |
| ret i32 %., !dbg !19 |
| } |
| |
| declare dso_local <4 x float> @_Z3getv() |
| |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #2 |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 8.0.0 (trunk 339665)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "test.cpp", directory: ".") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 8.0.0 (trunk 339665)"} |
| !7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !{!12} |
| !12 = !DILocalVariable(name: "MyVar", scope: !7, file: !1, line: 4, type: !13) |
| !13 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float) |
| !14 = !DILocation(line: 4, column: 18, scope: !7) |
| !15 = !DILocation(line: 4, column: 9, scope: !7) |
| !16 = !DILocation(line: 5, column: 7, scope: !17) |
| !17 = distinct !DILexicalBlock(scope: !7, file: !1, line: 5, column: 7) |
| !18 = !DILocation(line: 6, column: 5, scope: !17) |
| !19 = !DILocation(line: 7, column: 1, scope: !7) |
| |
| ; Look at the debug location information for variable 'MyVar'. |
| ; Verify that we see a sequence of DI entries, that looks like: |
| ; DW_TAG_variable |
| ; DW_AT_location (0x00000000 |
| ; [0x0000000000000009, 0x0000000000000012): DW_OP_reg17 XMM0) |
| ; DW_AT_name ("MyVar") |
| |
| ; CHECK-LABEL: DW_TAG_variable |
| ; CHECK-NEXT: DW_AT_location{{.*}} |
| ; CHECK-NEXT: {{.*}}DW_OP_reg17 XMM0 |
| ; CHECK-NEXT: DW_AT_name{{.*}}("MyVar") |