diff options
Diffstat (limited to 'llvm/test/DebugInfo/X86/dbg-value-regmask-clobber.ll')
| -rw-r--r-- | llvm/test/DebugInfo/X86/dbg-value-regmask-clobber.ll | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/llvm/test/DebugInfo/X86/dbg-value-regmask-clobber.ll b/llvm/test/DebugInfo/X86/dbg-value-regmask-clobber.ll new file mode 100644 index 00000000000..d868e855b8f --- /dev/null +++ b/llvm/test/DebugInfo/X86/dbg-value-regmask-clobber.ll @@ -0,0 +1,117 @@ +; RUN: llc < %s | FileCheck %s --check-prefix=ASM +; RUN: llc < %s -filetype=obj | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF + +; Values in registers should be clobbered by calls, which use a regmask instead +; of individual register def operands. + +; ASM: main: # @main +; ASM: #DEBUG_VALUE: main:argc <- %ECX +; ASM: movl $1, x(%rip) +; ASM: callq clobber +; ASM-NEXT: [[argc_range_end:.Ltmp[0-9]+]]: +; Previously LiveDebugValues would claim argc was still in ECX after the call. +; ASM-NOT: #DEBUG_VALUE: main:argc + +; argc is the first debug location. +; ASM: .Ldebug_loc1: +; ASM-NEXT: .quad .Lfunc_begin0-.Lfunc_begin0 +; ASM-NEXT: .quad [[argc_range_end]]-.Lfunc_begin0 +; ASM-NEXT: .short 3 # Loc expr size +; ASM-NEXT: .byte 82 # super-register DW_OP_reg2 +; ASM-NEXT: .byte 147 # DW_OP_piece +; ASM-NEXT: .byte 4 # 4 + +; argc is the first formal parameter. +; DWARF: .debug_info contents: +; DWARF: DW_TAG_formal_parameter +; DWARF-NEXT: DW_AT_location [DW_FORM_sec_offset] ([[argc_loc_offset:0x.*]]) +; DWARF-NEXT: DW_AT_name [DW_FORM_strp] {{.*}} "argc" + +; DWARF: .debug_loc contents: +; DWARF: [[argc_loc_offset]]: Beginning address offset: 0x0000000000000000 +; DWARF-NEXT: Ending address offset: 0x0000000000000013 +; DWARF-NEXT: Location description: 52 93 04 + +; ModuleID = 't.cpp' +target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-pc-windows-msvc18.0.0" + +@x = common global i32 0, align 4 + +; Function Attrs: nounwind uwtable +define i32 @main(i32 %argc, i8** nocapture readnone %argv) #0 !dbg !4 { +entry: + tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !12, metadata !21), !dbg !22 + tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !13, metadata !21), !dbg !23 + store volatile i32 1, i32* @x, align 4, !dbg !24, !tbaa !25 + tail call void @clobber() #3, !dbg !29 + store volatile i32 2, i32* @x, align 4, !dbg !30, !tbaa !25 + %0 = load volatile i32, i32* @x, align 4, !dbg !31, !tbaa !25 + %tobool = icmp eq i32 %0, 0, !dbg !31 + br i1 %tobool, label %if.else, label %if.then, !dbg !33 + +if.then: ; preds = %entry + store volatile i32 3, i32* @x, align 4, !dbg !34, !tbaa !25 + br label %if.end, !dbg !36 + +if.else: ; preds = %entry + store volatile i32 4, i32* @x, align 4, !dbg !37, !tbaa !25 + br label %if.end + +if.end: ; preds = %if.else, %if.then + ret i32 0, !dbg !39 +} + +declare void @clobber() + +; Function Attrs: nounwind readnone +declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 + +attributes #0 = { nounwind uwtable } +attributes #2 = { nounwind readnone } +attributes #3 = { nounwind } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!17, !18, !19} +!llvm.ident = !{!20} + +!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 260617) (llvm/trunk 260619)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3, globals: !14) +!1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild") +!2 = !{} +!3 = !{!4} +!4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: true, variables: !11) +!5 = !DISubroutineType(types: !6) +!6 = !{!7, !7, !8} +!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) +!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64) +!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64) +!10 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char) +!11 = !{!12, !13} +!12 = !DILocalVariable(name: "argv", arg: 2, scope: !4, file: !1, line: 4, type: !8) +!13 = !DILocalVariable(name: "argc", arg: 1, scope: !4, file: !1, line: 4, type: !7) +!14 = !{!15} +!15 = !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 1, type: !16, isLocal: false, isDefinition: true, variable: i32* @x) +!16 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7) +!17 = !{i32 2, !"Dwarf Version", i32 4} +!18 = !{i32 2, !"Debug Info Version", i32 3} +!19 = !{i32 1, !"PIC Level", i32 2} +!20 = !{!"clang version 3.9.0 (trunk 260617) (llvm/trunk 260619)"} +!21 = !DIExpression() +!22 = !DILocation(line: 4, column: 27, scope: !4) +!23 = !DILocation(line: 4, column: 14, scope: !4) +!24 = !DILocation(line: 5, column: 5, scope: !4) +!25 = !{!26, !26, i64 0} +!26 = !{!"int", !27, i64 0} +!27 = !{!"omnipotent char", !28, i64 0} +!28 = !{!"Simple C/C++ TBAA"} +!29 = !DILocation(line: 6, column: 3, scope: !4) +!30 = !DILocation(line: 7, column: 5, scope: !4) +!31 = !DILocation(line: 8, column: 7, scope: !32) +!32 = distinct !DILexicalBlock(scope: !4, file: !1, line: 8, column: 7) +!33 = !DILocation(line: 8, column: 7, scope: !4) +!34 = !DILocation(line: 9, column: 7, scope: !35) +!35 = distinct !DILexicalBlock(scope: !32, file: !1, line: 8, column: 10) +!36 = !DILocation(line: 10, column: 3, scope: !35) +!37 = !DILocation(line: 11, column: 7, scope: !38) +!38 = distinct !DILexicalBlock(scope: !32, file: !1, line: 10, column: 10) +!39 = !DILocation(line: 13, column: 1, scope: !4) |
