forked from OSchip/llvm-project
63 lines
2.9 KiB
LLVM
63 lines
2.9 KiB
LLVM
; RUN: opt < %s -mem2reg -S | FileCheck %s
|
|
|
|
; Testing conversion from dbg.declare to dbg.value when the variable is a VLA.
|
|
;
|
|
; We can't derive the size of the variable simply by looking at the
|
|
; metadata. But we can find out the size by examining the alloca, so we should
|
|
; know that the load/store instructions are referencing the whole variable,
|
|
; and we expect to get dbg.value intrinsics that maps %entryN (aka %[[PHI]])
|
|
; and %t0 to the variable allocated as %vla1.
|
|
|
|
; ModuleID = 'debug-alloca-vla.ll'
|
|
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-apple-macosx10.12.0"
|
|
|
|
; Function Attrs: nounwind ssp uwtable
|
|
define void @scan() #0 !dbg !4 {
|
|
entry:
|
|
%vla1 = alloca i32, i32 1, align 8
|
|
call void @llvm.dbg.declare(metadata i32* %vla1, metadata !10, metadata !DIExpression()), !dbg !18
|
|
br label %for.cond, !dbg !18
|
|
|
|
for.cond: ; preds = %for.cond, %entry
|
|
; CHECK: %[[PHI:.*]] = phi i32 [ undef, %entry ], [ %t0, %for.cond ]
|
|
%entryN = load i32, i32* %vla1, align 8, !dbg !18
|
|
; CHECK: call void @llvm.dbg.value(metadata i32 %[[PHI]],
|
|
; CHECK-SAME: metadata !DIExpression())
|
|
%t0 = add i32 %entryN, 1
|
|
; CHECK: %t0 = add i32 %[[PHI]], 1
|
|
; CHECK: call void @llvm.dbg.value(metadata i32 %t0,
|
|
; CHECK-SAME: metadata !DIExpression())
|
|
store i32 %t0, i32* %vla1, align 8, !dbg !18
|
|
br label %for.cond, !dbg !18
|
|
}
|
|
|
|
; Function Attrs: nounwind readnone speculatable
|
|
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
|
|
|
|
attributes #0 = { nounwind ssp uwtable }
|
|
attributes #1 = { nounwind readnone speculatable }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!2, !3}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "adrian", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
|
|
!1 = !DIFile(filename: "<stdin>", directory: "/")
|
|
!2 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!3 = !{i32 7, !"PIC Level", i32 2}
|
|
!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)
|
|
!5 = !DISubroutineType(types: !6)
|
|
!6 = !{null, !7, !7}
|
|
!7 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
|
|
!8 = !{!9}
|
|
!9 = !DILocalVariable(name: "entry", scope: !4, file: !1, line: 6, type: !7)
|
|
!10 = !DILocalVariable(name: "ptr32", scope: !4, file: !1, line: 240, type: !11)
|
|
!11 = !DICompositeType(tag: DW_TAG_array_type, baseType: !12, elements: !14)
|
|
!12 = !DIDerivedType(tag: DW_TAG_typedef, name: "__uint32_t", file: !1, line: 41, baseType: !13)
|
|
!13 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
|
|
!14 = !{!15}
|
|
!15 = !DISubrange(count: !16)
|
|
!16 = !DILocalVariable(name: "__vla_expr", scope: !4, type: !17, flags: DIFlagArtificial)
|
|
!17 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned)
|
|
!18 = !DILocation(line: 6, scope: !4)
|