1 ; RUN: llc < %s 2 3 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" 4 target triple = "thumbv7-apple-darwin3.0.0-iphoneos" 5 6 @length = common global i32 0, align 4 ; <i32*> [#uses=1] 7 8 define void @x0(i8* nocapture %buf, i32 %nbytes) nounwind optsize { 9 entry: 10 tail call void @llvm.dbg.value(metadata i8* %buf, i64 0, metadata !0, metadata !DIExpression()), !dbg !15 11 tail call void @llvm.dbg.value(metadata i32 %nbytes, i64 0, metadata !8, metadata !DIExpression()), !dbg !16 12 %tmp = load i32, i32* @length, !dbg !17 ; <i32> [#uses=3] 13 %cmp = icmp eq i32 %tmp, -1, !dbg !17 ; <i1> [#uses=1] 14 %cmp.not = xor i1 %cmp, true ; <i1> [#uses=1] 15 %cmp3 = icmp ult i32 %tmp, %nbytes, !dbg !17 ; <i1> [#uses=1] 16 %or.cond = and i1 %cmp.not, %cmp3 ; <i1> [#uses=1] 17 tail call void @llvm.dbg.value(metadata i32 %tmp, i64 0, metadata !8, metadata !DIExpression()), !dbg !17 18 %nbytes.addr.0 = select i1 %or.cond, i32 %tmp, i32 %nbytes ; <i32> [#uses=1] 19 tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !10, metadata !DIExpression()), !dbg !19 20 br label %while.cond, !dbg !20 21 22 while.cond: ; preds = %while.body, %entry 23 %0 = phi i32 [ 0, %entry ], [ %inc, %while.body ] ; <i32> [#uses=3] 24 %buf.addr.0 = getelementptr i8, i8* %buf, i32 %0 ; <i8*> [#uses=1] 25 %cmp7 = icmp ult i32 %0, %nbytes.addr.0, !dbg !20 ; <i1> [#uses=1] 26 br i1 %cmp7, label %land.rhs, label %while.end, !dbg !20 27 28 land.rhs: ; preds = %while.cond 29 %call = tail call i32 @x1() nounwind optsize, !dbg !20 ; <i32> [#uses=2] 30 %cmp9 = icmp eq i32 %call, -1, !dbg !20 ; <i1> [#uses=1] 31 br i1 %cmp9, label %while.end, label %while.body, !dbg !20 32 33 while.body: ; preds = %land.rhs 34 %conv = trunc i32 %call to i8, !dbg !21 ; <i8> [#uses=1] 35 store i8 %conv, i8* %buf.addr.0, !dbg !21 36 %inc = add i32 %0, 1, !dbg !23 ; <i32> [#uses=1] 37 br label %while.cond, !dbg !24 38 39 while.end: ; preds = %land.rhs, %while.cond 40 ret void, !dbg !25 41 } 42 43 declare i32 @x1() optsize 44 45 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone 46 47 !llvm.dbg.lv.fn = !{!0, !8, !10, !12} 48 !llvm.dbg.gv = !{!14} 49 50 !0 = !DILocalVariable(name: "buf", line: 4, arg: 1, scope: !1, file: !2, type: !6) 51 !1 = distinct !DISubprogram(name: "x0", linkageName: "x0", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !26, scope: null, type: !4) 52 !2 = !DIFile(filename: "t.c", directory: "/private/tmp") 53 !3 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang 2.0", isOptimized: true, file: !26) 54 !4 = !DISubroutineType(types: !5) 55 !5 = !{null} 56 !6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !26, scope: !2, baseType: !7) 57 !7 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned char", size: 8, align: 8, encoding: DW_ATE_unsigned_char) 58 !8 = !DILocalVariable(name: "nbytes", line: 4, arg: 2, scope: !1, file: !2, type: !9) 59 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned long", size: 32, align: 32, encoding: DW_ATE_unsigned) 60 !10 = !DILocalVariable(name: "nread", line: 6, scope: !11, file: !2, type: !9) 61 !11 = distinct !DILexicalBlock(line: 5, column: 1, file: !26, scope: !1) 62 !12 = !DILocalVariable(name: "c", line: 7, scope: !11, file: !2, type: !13) 63 !13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 64 !14 = !DIGlobalVariable(name: "length", linkageName: "length", line: 1, isLocal: false, isDefinition: true, scope: !2, file: !2, type: !13, variable: i32* @length) 65 !15 = !DILocation(line: 4, column: 24, scope: !1) 66 !16 = !DILocation(line: 4, column: 43, scope: !1) 67 !17 = !DILocation(line: 9, column: 2, scope: !11) 68 !18 = !{i32 0} 69 !19 = !DILocation(line: 10, column: 2, scope: !11) 70 !20 = !DILocation(line: 11, column: 2, scope: !11) 71 !21 = !DILocation(line: 12, column: 3, scope: !22) 72 !22 = distinct !DILexicalBlock(line: 11, column: 45, file: !26, scope: !11) 73 !23 = !DILocation(line: 13, column: 3, scope: !22) 74 !24 = !DILocation(line: 14, column: 2, scope: !22) 75 !25 = !DILocation(line: 15, column: 1, scope: !11) 76 !26 = !DIFile(filename: "t.c", directory: "/private/tmp") 77
