; RUN: opt -S %s -passes=declare-to-assign -o - | FileCheck %s ; RUN: opt --try-experimental-debuginfo-iterators -S %s -passes=declare-to-assign -o - | FileCheck %s ;; Check declare-to-assign ignores VLA-backed variables (for now). ;; From C++ source: ;; __attribute__ ((nodebug)) int sz; ;; void fun() { ;; int x[sz]; ;; } ; CHECK: llvm.dbg.declare(metadata ptr %vla, metadata ![[#]], metadata !DIExpression()) @sz = dso_local global i32 0, align 4 define dso_local void @_Z3funv() #0 !dbg !10 { entry: %saved_stack = alloca ptr, align 8 %__vla_expr0 = alloca i64, align 8 %0 = load i32, ptr @sz, align 4, !dbg !14 %1 = zext i32 %0 to i64, !dbg !15 %2 = call ptr @llvm.stacksave(), !dbg !15 store ptr %2, ptr %saved_stack, align 8, !dbg !15 %vla = alloca i32, i64 %1, align 16, !dbg !15 store i64 %1, ptr %__vla_expr0, align 8, !dbg !15 ;; Ignore this artificial variable for the purpose of the test. ; call void @llvm.dbg.declare(metadata ptr %__vla_expr0, metadata !16, metadata !DIExpression()), !dbg !18 call void @llvm.dbg.declare(metadata ptr %vla, metadata !19, metadata !DIExpression()), !dbg !24 %3 = load ptr, ptr %saved_stack, align 8, !dbg !25 call void @llvm.stackrestore(ptr %3), !dbg !25 ret void, !dbg !25 } declare ptr @llvm.stacksave() #1 declare void @llvm.dbg.declare(metadata, metadata, metadata) #2 declare void @llvm.stackrestore(ptr) #1 !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!2, !3} !llvm.ident = !{!9} !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 17.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) !1 = !DIFile(filename: "test.cpp", directory: "/") !2 = !{i32 7, !"Dwarf Version", i32 5} !3 = !{i32 2, !"Debug Info Version", i32 3} !8 = !{i32 7, !"frame-pointer", i32 2} !9 = !{!"clang version 17.0.0"} !10 = distinct !DISubprogram(name: "fun", linkageName: "_Z3funv", scope: !1, file: !1, line: 2, type: !11, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !13) !11 = !DISubroutineType(types: !12) !12 = !{null} !13 = !{} !14 = !DILocation(line: 3, column: 9, scope: !10) !15 = !DILocation(line: 3, column: 3, scope: !10) !16 = !DILocalVariable(name: "__vla_expr0", scope: !10, type: !17, flags: DIFlagArtificial) !17 = !DIBasicType(name: "unsigned long", size: 64, encoding: DW_ATE_unsigned) !18 = !DILocation(line: 0, scope: !10) !19 = !DILocalVariable(name: "x", scope: !10, file: !1, line: 3, type: !20) !20 = !DICompositeType(tag: DW_TAG_array_type, baseType: !21, elements: !22) !21 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) !22 = !{!23} !23 = !DISubrange(count: !16) !24 = !DILocation(line: 3, column: 7, scope: !10) !25 = !DILocation(line: 4, column: 1, scope: !10)