| ; 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 ; <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, variable: i32* @length) |
| !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") |
