llvm/test/CodeGen/ARM/2010-06-25-Thumb2ITInvalidIterator.ll
Peter Collingbourne 5420de3f15 DebugInfo: New metadata representation for global variables.
This patch reverses the edge from DIGlobalVariable to GlobalVariable.
This will allow us to more easily preserve debug info metadata when
manipulating global variables.

Fixes PR30362. A program for upgrading test cases is attached to that
bug.

Differential Revision: http://reviews.llvm.org/D20147

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281284 91177308-0d34-0410-b5e6-96231b3b80d8
2016-09-13 01:12:59 +00:00

76 lines
4.3 KiB
LLVM

; RUN: llc < %s
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:64:64-v128:128:128-a0:0:32-n32"
target triple = "thumbv7-apple-darwin3.0.0-iphoneos"
@length = common global i32 0, align 4, !dbg !14 ; <i32*> [#uses=1]
define void @x0(i8* nocapture %buf, i32 %nbytes) nounwind optsize {
entry:
tail call void @llvm.dbg.value(metadata i8* %buf, i64 0, metadata !0, metadata !DIExpression()), !dbg !15
tail call void @llvm.dbg.value(metadata i32 %nbytes, i64 0, metadata !8, metadata !DIExpression()), !dbg !16
%tmp = load i32, i32* @length, !dbg !17 ; <i32> [#uses=3]
%cmp = icmp eq i32 %tmp, -1, !dbg !17 ; <i1> [#uses=1]
%cmp.not = xor i1 %cmp, true ; <i1> [#uses=1]
%cmp3 = icmp ult i32 %tmp, %nbytes, !dbg !17 ; <i1> [#uses=1]
%or.cond = and i1 %cmp.not, %cmp3 ; <i1> [#uses=1]
tail call void @llvm.dbg.value(metadata i32 %tmp, i64 0, metadata !8, metadata !DIExpression()), !dbg !17
%nbytes.addr.0 = select i1 %or.cond, i32 %tmp, i32 %nbytes ; <i32> [#uses=1]
tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !10, metadata !DIExpression()), !dbg !19
br label %while.cond, !dbg !20
while.cond: ; preds = %while.body, %entry
%0 = phi i32 [ 0, %entry ], [ %inc, %while.body ] ; <i32> [#uses=3]
%buf.addr.0 = getelementptr i8, i8* %buf, i32 %0 ; <i8*> [#uses=1]
%cmp7 = icmp ult i32 %0, %nbytes.addr.0, !dbg !20 ; <i1> [#uses=1]
br i1 %cmp7, label %land.rhs, label %while.end, !dbg !20
land.rhs: ; preds = %while.cond
%call = tail call i32 @x1() nounwind optsize, !dbg !20 ; <i32> [#uses=2]
%cmp9 = icmp eq i32 %call, -1, !dbg !20 ; <i1> [#uses=1]
br i1 %cmp9, label %while.end, label %while.body, !dbg !20
while.body: ; preds = %land.rhs
%conv = trunc i32 %call to i8, !dbg !21 ; <i8> [#uses=1]
store i8 %conv, i8* %buf.addr.0, !dbg !21
%inc = add i32 %0, 1, !dbg !23 ; <i32> [#uses=1]
br label %while.cond, !dbg !24
while.end: ; preds = %land.rhs, %while.cond
ret void, !dbg !25
}
declare i32 @x1() optsize
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
!llvm.dbg.cu = !{!3}
!0 = !DILocalVariable(name: "buf", line: 4, arg: 1, scope: !1, file: !2, type: !6)
!1 = distinct !DISubprogram(name: "x0", linkageName: "x0", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !3, file: !26, scope: null, type: !4)
!2 = !DIFile(filename: "t.c", directory: "/private/tmp")
!3 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang 2.0", isOptimized: true, file: !26, globals: !{!14})
!4 = !DISubroutineType(types: !5)
!5 = !{null}
!6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !26, scope: !2, baseType: !7)
!7 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
!8 = !DILocalVariable(name: "nbytes", line: 4, arg: 2, scope: !1, file: !2, type: !9)
!9 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned long", size: 32, align: 32, encoding: DW_ATE_unsigned)
!10 = !DILocalVariable(name: "nread", line: 6, scope: !11, file: !2, type: !9)
!11 = distinct !DILexicalBlock(line: 5, column: 1, file: !26, scope: !1)
!12 = !DILocalVariable(name: "c", line: 7, scope: !11, file: !2, type: !13)
!13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!14 = !DIGlobalVariable(name: "length", linkageName: "length", line: 1, isLocal: false, isDefinition: true, scope: !2, file: !2, type: !13)
!15 = !DILocation(line: 4, column: 24, scope: !1)
!16 = !DILocation(line: 4, column: 43, scope: !1)
!17 = !DILocation(line: 9, column: 2, scope: !11)
!18 = !{i32 0}
!19 = !DILocation(line: 10, column: 2, scope: !11)
!20 = !DILocation(line: 11, column: 2, scope: !11)
!21 = !DILocation(line: 12, column: 3, scope: !22)
!22 = distinct !DILexicalBlock(line: 11, column: 45, file: !26, scope: !11)
!23 = !DILocation(line: 13, column: 3, scope: !22)
!24 = !DILocation(line: 14, column: 2, scope: !22)
!25 = !DILocation(line: 15, column: 1, scope: !11)
!26 = !DIFile(filename: "t.c", directory: "/private/tmp")