55 lines
2.5 KiB
LLVM
55 lines
2.5 KiB
LLVM
; RUN: opt -disable-basic-aa -enable-new-pm=0 -print-memoryssa -disable-output %s 2>&1 | FileCheck %s
|
|
|
|
; Note that the test crashes the MemorySSA verification when doing loop-rotate,
|
|
; if debuginfo is modelled in MemorySSA, due to the fact that MemorySSA is not
|
|
; updated when adding/removing debuginfo intrinsics.
|
|
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
; CHECK-LABEL: @overflow_iter_var
|
|
; CHECK-NOT: MemoryDef
|
|
define void @overflow_iter_var() !dbg !11 {
|
|
entry:
|
|
call void @llvm.dbg.value(metadata i16 0, metadata !16, metadata !DIExpression()), !dbg !18
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.body, %entry
|
|
call void @llvm.dbg.value(metadata i16 0, metadata !16, metadata !DIExpression()), !dbg !18
|
|
call void @llvm.dbg.value(metadata i16 undef, metadata !20, metadata !DIExpression()), !dbg !21
|
|
br i1 undef, label %for.end, label %for.body
|
|
|
|
for.body: ; preds = %for.cond
|
|
%0 = load i16, i16* undef, align 1
|
|
br label %for.cond
|
|
|
|
for.end: ; preds = %for.cond
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: nounwind readnone speculatable willreturn
|
|
declare void @llvm.dbg.value(metadata, metadata, metadata) #1
|
|
|
|
attributes #1 = { nounwind readnone speculatable willreturn }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!10}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3, nameTableKind: None)
|
|
!1 = !DIFile(filename: "2_loops.c", directory: "/")
|
|
!2 = !{}
|
|
!3 = !{}
|
|
!6 = !DICompositeType(tag: DW_TAG_array_type, baseType: !7, size: 4096, elements: !8)
|
|
!7 = !DIBasicType(name: "int", size: 16, encoding: DW_ATE_signed)
|
|
!8 = !{!9}
|
|
!9 = !DISubrange(count: 256)
|
|
!10 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!11 = distinct !DISubprogram(name: "overflow_iter_var", scope: !1, file: !1, line: 20, type: !12, scopeLine: 21, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
|
|
!12 = !DISubroutineType(types: !13)
|
|
!13 = !{null, !14, !14}
|
|
!14 = !DIBasicType(name: "unsigned int", size: 16, encoding: DW_ATE_unsigned)
|
|
!16 = !DILocalVariable(name: "i", scope: !17, file: !1, line: 23, type: !14)
|
|
!17 = distinct !DILexicalBlock(scope: !11, file: !1, line: 23, column: 3)
|
|
!18 = !DILocation(line: 0, scope: !17)
|
|
!20 = !DILocalVariable(name: "stop1", arg: 1, scope: !11, file: !1, line: 20, type: !14)
|
|
!21 = !DILocation(line: 0, scope: !11)
|