# RUN: llc -mtriple=x86_64-linux-gnu -start-before greedy -stop-after virtregrewriter -o - -verify-machineinstrs %s | FileCheck %s --- | ; ModuleID = '' source_filename = "test/DebugInfo/X86/dbg-value-inlined-parameter.ll" target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-apple-darwin" %struct.S1 = type { float*, i32 } @p = common global %struct.S1 zeroinitializer, align 8, !dbg !0 ; Function Attrs: nounwind optsize ssp define void @foobar() !dbg !15 { entry: tail call void @llvm.dbg.value(metadata %struct.S1* @p, metadata !18, metadata !DIExpression()) , !dbg !25 ret void, !dbg !32 } ; Function Attrs: nounwind readnone speculatable declare void @llvm.dbg.value(metadata, metadata, metadata) #2 !llvm.dbg.cu = !{!2} !llvm.module.flags = !{!14} !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) !1 = !DIGlobalVariable(name: "p", scope: !2, file: !3, line: 14, type: !6, isLocal: false, isDefinition: true) !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 2.9 (trunk 125693)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4, globals: !5, imports: !4) !3 = !DIFile(filename: "nm2.c", directory: "/private/tmp") !4 = !{} !5 = !{!0} !6 = !DIDerivedType(tag: DW_TAG_typedef, name: "S1", scope: !2, file: !3, line: 4, baseType: !7) !7 = !DICompositeType(tag: DW_TAG_structure_type, name: "S1", scope: !2, file: !3, line: 1, size: 128, align: 64, elements: !8) !8 = !{!9, !12} !9 = !DIDerivedType(tag: DW_TAG_member, name: "m", scope: !3, file: !3, line: 2, baseType: !10, size: 64, align: 64) !10 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !2, baseType: !11, size: 64, align: 64) !11 = !DIBasicType(name: "float", size: 32, align: 32, encoding: DW_ATE_float) !12 = !DIDerivedType(tag: DW_TAG_member, name: "nums", scope: !3, file: !3, line: 3, baseType: !13, size: 32, align: 32, offset: 64) !13 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) !14 = !{i32 1, !"Debug Info Version", i32 3} !15 = distinct !DISubprogram(name: "foobar", scope: !3, file: !3, line: 15, type: !16, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !2) !16 = !DISubroutineType(types: !17) !17 = !{null} !18 = !DILocalVariable(name: "sp", arg: 1, scope: !19, file: !3, line: 7, type: !24) !19 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 8, type: !20, isLocal: false, isDefinition: true, scopeLine: 8, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !22) !20 = !DISubroutineType(types: !21) !21 = !{!13} !22 = !{!18, !23} !23 = !DILocalVariable(name: "nums", arg: 2, scope: !19, file: !3, line: 7, type: !13) !24 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !2, baseType: !6, size: 64, align: 64) !25 = !DILocation(line: 7, column: 13, scope: !19, inlinedAt: !26) !26 = !DILocation(line: 16, column: 3, scope: !27) !27 = distinct !DILexicalBlock(scope: !15, file: !3, line: 15, column: 15) !32 = !DILocation(line: 17, column: 1, scope: !27) ... --- name: foobar tracksRegLiveness: true body: | bb.0: %1:gr64 = IMPLICIT_DEF %2:gr64 = IMPLICIT_DEF bb.1: ; This DBG_VALUE will be discarded (use before def of %0). DBG_VALUE %0, $noreg, !18, !DIExpression(), debug-location !25 %0:gr64 = IMPLICIT_DEF %0:gr64 = IMPLICIT_DEF %0:gr64 = IMPLICIT_DEF %0:gr64 = IMPLICIT_DEF bb.2: ; This DBG_VALUE will be discarded (%1 is defined earlier, but it is not live in, so we do not know where %1 is stored). DBG_VALUE %1, $noreg, !18, !DIExpression(), debug-location !25 %1:gr64 = IMPLICIT_DEF %1:gr64 = IMPLICIT_DEF %1:gr64 = IMPLICIT_DEF %1:gr64 = IMPLICIT_DEF ; This DBG_VALUE is kept, even if %1 is dead, it was defined in the prev instruction, ; so the value should be available for as long as the register allocated to %1 is live. DBG_VALUE %1, $noreg, !18, !DIExpression(), debug-location !25 bb.3: %1:gr64 = IMPLICIT_DEF DBG_VALUE 0, $noreg, !23, !DIExpression(), debug-location !25 ; This DBG_VALUE is kept, even if %1 is dead, it was defined in the prev non-dbg instruction, ; so the value should be available for as long as the register allocated to %1 is live. DBG_VALUE %1, $noreg, !18, !DIExpression(), debug-location !25 bb.4: ; All DBG_VALUEs here should survive. %2 is livein as it was defined in bb.0, and it has use/def in the BTS64ri8 instruction. DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25 %2:gr64 = BTS64ri8 %2, 0, implicit-def $eflags DBG_VALUE 0, $noreg, !23, !DIExpression(), debug-location !25 DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25 %2:gr64 = BTS64ri8 %2, 0, implicit-def $eflags DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25 %2:gr64 = BTS64ri8 %2, 0, implicit-def $eflags DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25 bb.5: RET 0, debug-location !32 ... # CHECK-LABEL: name: foobar # CHECK-LABEL: bb.1: # CHECK: DBG_VALUE $noreg # CHECK-LABEL: bb.2: # CHECK: DBG_VALUE $noreg # CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF # CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF # CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF # CHECK-NEXT: dead renamable $rcx = IMPLICIT_DEF # CHECK-NEXT: DBG_VALUE $noreg, $noreg, !18, !DIExpression() # CHECK-LABEL: bb.3: # CHECK: dead renamable $rcx = IMPLICIT_DEF # CHECK-NEXT: DBG_VALUE 0, $noreg, !23, !DIExpression() # CHECK-NEXT: DBG_VALUE $rcx, $noreg, !18, !DIExpression() # CHECK-LABEL: bb.4: # CHECK: liveins: $rax # CHECK: DBG_VALUE $rax, $noreg, !18, !DIExpression() # CHECK-NEXT: renamable $rax = BTS64ri8 killed renamable $rax, 0, implicit-def $eflags # CHECK-NEXT: DBG_VALUE 0, $noreg, !23, !DIExpression() # CHECK-NEXT: DBG_VALUE $rax, $noreg, !18, !DIExpression() # CHECK-NEXT: renamable $rax = BTS64ri8 killed renamable $rax, 0, implicit-def $eflags # CHECK-NEXT: DBG_VALUE $rax, $noreg, !18, !DIExpression() # CHECK-NEXT: dead renamable $rax = BTS64ri8 killed renamable $rax, 0, implicit-def $eflags # CHECK-LABEL: bb.5: # CHECK-NEXT: RET 0