1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=mem2reg -S | FileCheck %s 3; RUN: opt < %s -passes=mem2reg -S --try-experimental-debuginfo-iterators | FileCheck %s 4 5; Testing conversion from dbg.declare to dbg.value when the variable is a VLA. 6; 7; We can't derive the size of the variable simply by looking at the 8; metadata. But we can find out the size by examining the alloca, so we should 9; know that the load/store instructions are referencing the whole variable, 10; and we expect to get dbg.value intrinsics that maps %entryN (aka %[[PHI]]) 11; and %t0 to the variable allocated as %vla1. 12 13; ModuleID = 'debug-alloca-vla.ll' 14target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 15target triple = "x86_64-apple-macosx10.12.0" 16 17; Function Attrs: nounwind ssp uwtable 18define void @scan() #0 !dbg !4 { 19; CHECK-LABEL: @scan( 20; CHECK-NEXT: entry: 21; CHECK-NEXT: br label [[FOR_COND:%.*]], !dbg [[DBG10:![0-9]+]] 22; CHECK: for.cond: 23; CHECK-NEXT: [[VLA1_0:%.*]] = phi i32 [ undef, [[ENTRY:%.*]] ], [ [[T0:%.*]], [[FOR_COND]] ] 24; CHECK-NEXT: #dbg_value(i32 [[VLA1_0]], [[META11:![0-9]+]], !DIExpression(), [[META19:![0-9]+]]) 25; CHECK-NEXT: [[T0]] = add i32 [[VLA1_0]], 1 26; CHECK-NEXT: #dbg_value(i32 [[T0]], [[META11]], !DIExpression(), [[META19]]) 27; CHECK-NEXT: br label [[FOR_COND]], !dbg [[DBG10]] 28; 29entry: 30 %vla1 = alloca i32, i32 1, align 8 31 call void @llvm.dbg.declare(metadata ptr %vla1, metadata !10, metadata !DIExpression()), !dbg !18 32 br label %for.cond, !dbg !18 33 34for.cond: ; preds = %for.cond, %entry 35 %entryN = load i32, ptr %vla1, align 8, !dbg !18 36 %t0 = add i32 %entryN, 1 37 store i32 %t0, ptr %vla1, align 8, !dbg !18 38 br label %for.cond, !dbg !18 39} 40 41; Function Attrs: nounwind readnone speculatable 42declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 43 44attributes #0 = { nounwind ssp uwtable } 45attributes #1 = { nounwind readnone speculatable } 46 47!llvm.dbg.cu = !{!0} 48!llvm.module.flags = !{!2, !3} 49 50!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "adrian", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug) 51!1 = !DIFile(filename: "<stdin>", directory: "/") 52!2 = !{i32 2, !"Debug Info Version", i32 3} 53!3 = !{i32 7, !"PIC Level", i32 2} 54!4 = distinct !DISubprogram(name: "scan", scope: !1, file: !1, line: 4, type: !5, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !8) 55!5 = !DISubroutineType(types: !6) 56!6 = !{null, !7, !7} 57!7 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) 58!8 = !{!9} 59!9 = !DILocalVariable(name: "entry", scope: !4, file: !1, line: 6, type: !7) 60!10 = !DILocalVariable(name: "ptr32", scope: !4, file: !1, line: 240, type: !11) 61!11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, elements: !14) 62!12 = !DIDerivedType(tag: DW_TAG_typedef, name: "__uint32_t", file: !1, line: 41, baseType: !13) 63!13 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned) 64!14 = !{!15} 65!15 = !DISubrange(count: !16) 66!16 = !DILocalVariable(name: "__vla_expr", scope: !4, type: !17, flags: DIFlagArtificial) 67!17 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned) 68!18 = !DILocation(line: 6, scope: !4) 69