; RUN: llc %s -o - -stop-after=finalize-isel \ ; RUN: | FileCheck %s --implicit-check-not=DBG_ ; RUN: llc --try-experimental-debuginfo-iterators %s -o - -stop-after=finalize-isel \ ; RUN: | FileCheck %s --implicit-check-not=DBG_ ;; Test coalescing of contiguous fragments in adjacent location definitions. ;; Further details and check directives inline. target triple = "x86_64-unknown-linux-gnu" @cond = dso_local global i8 0, align 1 ;; The final store and linked dbg.assign indicate the whole variable is located ;; on the stack. Coalesce the two fragment defs that are generated (0-32, ;; 32-64) at the final dbg.assign into one (0-64, which covers the whole ;; variable meaning we don't need a fragment expression). And check the two ;; DBG_VALUEs in if.then are not coalesced, since they specify different ;; locations. This is the same as the first test in coalesce-simple.ll except ;; the dbg intrinsics are split up over a simple diamond CFG to check the info ;; is propagated betweeen blocks correctly. ; CHECK-LABEL: bb.0.entry: ; CHECK-NEXT: successors: ; CHECK-NEXT: {{^ *$}} ; CHECK-NEXT: DBG_VALUE %stack.0.a, $noreg, ![[#]], !DIExpression(DW_OP_deref) ; CHECK-NEXT: TEST8mi ; CHECK-NEXT: JCC_1 %bb.2 ; CHECK-NEXT: JMP_1 %bb.1 ; CHECK-LABEL: bb.1.if.then: ; CHECK-NEXT: successors: ; CHECK-NEXT: {{^ *$}} ; CHECK-NEXT: MOV8mi $rip, 1, $noreg, @cond, $noreg, 0 :: (store (s8) into @cond) ; CHECK-NEXT: DBG_VALUE 1, $noreg, ![[#]], !DIExpression(DW_OP_LLVM_fragment, 0, 32) ; CHECK-NEXT: DBG_VALUE %stack.0.a, $noreg, ![[#]], !DIExpression(DW_OP_plus_uconst, 4, DW_OP_deref, DW_OP_LLVM_fragment, 32, 32) ; CHECK-NEXT: JMP_1 %bb.3 ; CHECK-LABEL: bb.2.if.else: ; CHECK-NEXT: successors: ; CHECK-NEXT: {{^ *$}} ; CHECK-NEXT: MOV8mi $rip, 1, $noreg, @cond, $noreg, 1 :: (store (s8) into @cond) ; CHECK-LABEL: bb.3.if.end: ; CHECK-NEXT: MOV32mi %stack.0.a, 1, $noreg, 0, $noreg, 5 :: (store (s32) into %ir.a, align 8) ; CHECK-NEXT: DBG_VALUE %stack.0.a, $noreg, ![[#]], !DIExpression(DW_OP_deref) ; CHECK-NEXT: RET 0 define dso_local void @_Z3funv() local_unnamed_addr !dbg !16 { entry: %a = alloca i64, !DIAssignID !37 call void @llvm.dbg.assign(metadata i64 poison, metadata !20, metadata !DIExpression(), metadata !37, metadata ptr %a, metadata !DIExpression()), !dbg !25 %0 = load i8, ptr @cond, align 1 %tobool = trunc i8 %0 to i1 br i1 %tobool, label %if.then, label %if.else if.then: store i1 false, ptr @cond call void @llvm.dbg.value(metadata i32 1, metadata !20, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !25 br label %if.end if.else: store i1 true, ptr @cond br label %if.end if.end: store i32 5, ptr %a, !DIAssignID !38 call void @llvm.dbg.assign(metadata i32 5, metadata !20, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32), metadata !38, metadata ptr %a, metadata !DIExpression()), !dbg !25 ret void } declare void @llvm.dbg.value(metadata, metadata, metadata) declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) !llvm.dbg.cu = !{!2} !llvm.module.flags = !{!8, !9, !10, !11, !12, !13, !14} !llvm.ident = !{!15} !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) !1 = distinct !DIGlobalVariable(name: "G", scope: !2, file: !3, line: 1, type: !7, isLocal: false, isDefinition: true) !2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !3, producer: "clang version 17.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None) !3 = !DIFile(filename: "test.cpp", directory: "/") !4 = !{!0, !5} !5 = !DIGlobalVariableExpression(var: !6, expr: !DIExpression()) !6 = distinct !DIGlobalVariable(name: "F", scope: !2, file: !3, line: 1, type: !7, isLocal: false, isDefinition: true) !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) !8 = !{i32 7, !"Dwarf Version", i32 5} !9 = !{i32 2, !"Debug Info Version", i32 3} !10 = !{i32 1, !"wchar_size", i32 4} !11 = !{i32 8, !"PIC Level", i32 2} !12 = !{i32 7, !"PIE Level", i32 2} !13 = !{i32 7, !"uwtable", i32 2} !14 = !{i32 7, !"debug-info-assignment-tracking", i1 true} !15 = !{!"clang version 17.0.0"} !16 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funv", scope: !3, file: !3, line: 3, type: !17, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !19) !17 = !DISubroutineType(types: !18) !18 = !{null} !19 = !{!20} !20 = !DILocalVariable(name: "X", scope: !16, file: !3, line: 4, type: !21) !21 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "Pair", file: !3, line: 2, size: 64, flags: DIFlagTypePassByValue, elements: !22, identifier: "_ZTS4Pair") !22 = !{} !25 = !DILocation(line: 0, scope: !16) !26 = !DILocation(line: 7, column: 7, scope: !27) !27 = distinct !DILexicalBlock(scope: !16, file: !3, line: 7, column: 7) !28 = distinct !DIAssignID() !37 = distinct !DIAssignID() !38 = distinct !DIAssignID()