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7d6813a6c8
This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. llvm-svn: 312144
89 lines
4.1 KiB
LLVM
89 lines
4.1 KiB
LLVM
; RUN: llc < %s
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source_filename = "test/CodeGen/ARM/2010-06-25-Thumb2ITInvalidIterator.ll"
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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"
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target triple = "thumbv7-apple-darwin3.0.0-iphoneos"
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@length = common global i32 0, align 4, !dbg !0
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; Function Attrs: nounwind optsize
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define void @x0(i8* nocapture %buf, i32 %nbytes) #0 {
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entry:
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tail call void @llvm.dbg.value(metadata i8* %buf, metadata !8, metadata !14), !dbg !15
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tail call void @llvm.dbg.value(metadata i32 %nbytes, metadata !16, metadata !14), !dbg !18
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%tmp = load i32, i32* @length, !dbg !19
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%cmp = icmp eq i32 %tmp, -1, !dbg !19
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%cmp.not = xor i1 %cmp, true
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%cmp3 = icmp ult i32 %tmp, %nbytes, !dbg !19
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%or.cond = and i1 %cmp.not, %cmp3
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tail call void @llvm.dbg.value(metadata i32 %tmp, metadata !16, metadata !14), !dbg !19
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%nbytes.addr.0 = select i1 %or.cond, i32 %tmp, i32 %nbytes
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tail call void @llvm.dbg.value(metadata i32 0, metadata !21, metadata !14), !dbg !22
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br label %while.cond, !dbg !23
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while.cond: ; preds = %while.body, %entry
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%0 = phi i32 [ 0, %entry ], [ %inc, %while.body ]
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%buf.addr.0 = getelementptr i8, i8* %buf, i32 %0
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%cmp7 = icmp ult i32 %0, %nbytes.addr.0, !dbg !23
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br i1 %cmp7, label %land.rhs, label %while.end, !dbg !23
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land.rhs: ; preds = %while.cond
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%call = tail call i32 @x1() #0, !dbg !23
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%cmp9 = icmp eq i32 %call, -1, !dbg !23
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br i1 %cmp9, label %while.end, label %while.body, !dbg !23
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while.body: ; preds = %land.rhs
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%conv = trunc i32 %call to i8, !dbg !24
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store i8 %conv, i8* %buf.addr.0, !dbg !24
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%inc = add i32 %0, 1, !dbg !26
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br label %while.cond, !dbg !27
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while.end: ; preds = %land.rhs, %while.cond
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ret void, !dbg !28
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}
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; Function Attrs: optsize
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declare i32 @x1() #1
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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attributes #0 = { nounwind optsize }
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attributes #1 = { optsize }
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attributes #2 = { nounwind readnone }
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!llvm.dbg.cu = !{!4}
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!llvm.module.flags = !{!6, !7}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "length", linkageName: "length", scope: !2, file: !2, line: 1, type: !3, isLocal: false, isDefinition: true)
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!2 = !DIFile(filename: "t.c", directory: "/private/tmp")
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!3 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!4 = distinct !DICompileUnit(language: DW_LANG_C99, file: !2, producer: "clang 2.0", isOptimized: true, runtimeVersion: 0, emissionKind: NoDebug, globals: !5)
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!5 = !{!0}
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!6 = !{i32 2, !"Dwarf Version", i32 2}
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!7 = !{i32 2, !"Debug Info Version", i32 3}
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!8 = !DILocalVariable(name: "buf", arg: 1, scope: !9, file: !2, line: 4, type: !12)
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!9 = distinct !DISubprogram(name: "x0", linkageName: "x0", scope: null, file: !2, line: 5, type: !10, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !4)
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!10 = !DISubroutineType(types: !11)
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!11 = !{null}
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!12 = !DIDerivedType(tag: DW_TAG_pointer_type, scope: !2, file: !2, baseType: !13, size: 32, align: 32)
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!13 = !DIBasicType(name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
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!14 = !DIExpression()
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!15 = !DILocation(line: 4, column: 24, scope: !9)
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!16 = !DILocalVariable(name: "nbytes", arg: 2, scope: !9, file: !2, line: 4, type: !17)
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!17 = !DIBasicType(name: "unsigned long", size: 32, align: 32, encoding: DW_ATE_unsigned)
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!18 = !DILocation(line: 4, column: 43, scope: !9)
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!19 = !DILocation(line: 9, column: 2, scope: !20)
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!20 = distinct !DILexicalBlock(scope: !9, file: !2, line: 5, column: 1)
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!21 = !DILocalVariable(name: "nread", scope: !20, file: !2, line: 6, type: !17)
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!22 = !DILocation(line: 10, column: 2, scope: !20)
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!23 = !DILocation(line: 11, column: 2, scope: !20)
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!24 = !DILocation(line: 12, column: 3, scope: !25)
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!25 = distinct !DILexicalBlock(scope: !20, file: !2, line: 11, column: 45)
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!26 = !DILocation(line: 13, column: 3, scope: !25)
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!27 = !DILocation(line: 14, column: 2, scope: !25)
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!28 = !DILocation(line: 15, column: 1, scope: !20)
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