| ; RUN: llc %s -o - | FileCheck %s |
| |
| ; This test case was generated by running |
| ; |
| ; clang++ -O2 -g PR37234.cpp -S -save-temps |
| ; opt -O2 -S PR37234.bc -o PR37234.ll |
| ; |
| ; using the following PR37234.cpp program |
| ; |
| ; int main() { |
| ; const char* buffer = "aaa"; |
| ; unsigned aa = 0; |
| ; while (char c = *buffer++) { |
| ; if (c == 'a') |
| ; ++aa; // DexWatch('aa') |
| ; } |
| ; return aa; |
| ; } |
| |
| |
| ; CHECK-LABEL: # %bb.{{.*}}: |
| ; CHECK: #DEBUG_VALUE: main:aa <- 0 |
| ; CHECK: .LBB0_1: |
| ; CHECK: #DEBUG_VALUE: main:aa <- $[[REG:[0-9a-z]+]] |
| ; CHECK: je .LBB0_4 |
| ; CHECK: # %bb.{{.*}}: |
| ; CHECK: #DEBUG_VALUE: main:aa <- $[[REG]] |
| ; CHECK: jne .LBB0_1 |
| ; CHECK: # %bb.{{.*}}: |
| ; CHECK: #DEBUG_VALUE: main:aa <- $[[REG]] |
| ; CHECK: incl %[[REG]] |
| ; CHECK: #DEBUG_VALUE: main:aa <- $[[REG]] |
| ; CHECK: jmp .LBB0_1 |
| ; CHECK: .LBB0_4: |
| ; CHECK: #DEBUG_VALUE: main:aa <- $[[REG]] |
| ; CHECK: retq |
| |
| source_filename = "PR37234.cpp" |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @.str = private unnamed_addr constant [4 x i8] c"aaa\00", align 1 |
| |
| ; Function Attrs: norecurse nounwind readonly uwtable |
| define dso_local i32 @main() local_unnamed_addr #0 !dbg !7 { |
| entry: |
| call void @llvm.dbg.value(metadata i32 0, metadata !16, metadata !DIExpression()), !dbg !19 |
| br label %while.cond.outer, !dbg !20 |
| |
| while.cond.outer: ; preds = %if.then, %entry |
| %buffer.0.ph = phi i8* [ %incdec.ptr, %if.then ], [ getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), %entry ] |
| %aa.0.ph = phi i32 [ %inc, %if.then ], [ 0, %entry ] |
| br label %while.cond, !dbg !21 |
| |
| while.cond: ; preds = %while.cond.outer, %while.cond |
| %buffer.0 = phi i8* [ %incdec.ptr, %while.cond ], [ %buffer.0.ph, %while.cond.outer ], !dbg !22 |
| call void @llvm.dbg.value(metadata i32 %aa.0.ph, metadata !16, metadata !DIExpression()), !dbg !19 |
| call void @llvm.dbg.value(metadata i8* %buffer.0, metadata !12, metadata !DIExpression()), !dbg !23 |
| %incdec.ptr = getelementptr inbounds i8, i8* %buffer.0, i64 1, !dbg !21 |
| call void @llvm.dbg.value(metadata i8* %incdec.ptr, metadata !12, metadata !DIExpression()), !dbg !23 |
| %0 = load i8, i8* %buffer.0, align 1, !dbg !24, !tbaa !25 |
| call void @llvm.dbg.value(metadata i8 %0, metadata !18, metadata !DIExpression()), !dbg !28 |
| switch i8 %0, label %while.cond [ |
| i8 0, label %while.end |
| i8 97, label %if.then |
| ], !dbg !20 |
| |
| if.then: ; preds = %while.cond |
| %inc = add i32 %aa.0.ph, 1, !dbg !29 |
| call void @llvm.dbg.value(metadata i32 %inc, metadata !16, metadata !DIExpression()), !dbg !19 |
| br label %while.cond.outer, !dbg !29 |
| |
| while.end: ; preds = %while.cond |
| call void @llvm.dbg.value(metadata i32 %aa.0.ph, metadata !16, metadata !DIExpression()), !dbg !19 |
| call void @llvm.dbg.value(metadata i32 %aa.0.ph, metadata !16, metadata !DIExpression()), !dbg !19 |
| call void @llvm.dbg.value(metadata i32 %aa.0.ph, metadata !16, metadata !DIExpression()), !dbg !19 |
| call void @llvm.dbg.value(metadata i32 %aa.0.ph, metadata !16, metadata !DIExpression()), !dbg !19 |
| ret i32 %aa.0.ph, !dbg !32 |
| } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { norecurse nounwind readonly uwtable } |
| attributes #1 = { nounwind readnone speculatable } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4, !5} |
| !llvm.ident = !{!6} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 7.0.0 (trunk 330946) (llvm/trunk 330952)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) |
| !1 = !DIFile(filename: "PR37234.cpp", directory: "") |
| !2 = !{} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = !{i32 1, !"wchar_size", i32 4} |
| !6 = !{!"clang version 7.0.0 (trunk 330946) (llvm/trunk 330952)"} |
| !7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11) |
| !8 = !DISubroutineType(types: !9) |
| !9 = !{!10} |
| !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !11 = !{!12, !16, !18} |
| !12 = !DILocalVariable(name: "buffer", scope: !7, file: !1, line: 2, type: !13) |
| !13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64) |
| !14 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !15) |
| !15 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) |
| !16 = !DILocalVariable(name: "aa", scope: !7, file: !1, line: 3, type: !17) |
| !17 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned) |
| !18 = !DILocalVariable(name: "c", scope: !7, file: !1, line: 4, type: !15) |
| !19 = !DILocation(line: 3, column: 18, scope: !7) |
| !20 = !DILocation(line: 4, column: 9, scope: !7) |
| !21 = !DILocation(line: 4, column: 32, scope: !7) |
| !22 = !DILocation(line: 0, scope: !7) |
| !23 = !DILocation(line: 2, column: 21, scope: !7) |
| !24 = !DILocation(line: 4, column: 25, scope: !7) |
| !25 = !{!26, !26, i64 0} |
| !26 = !{!"omnipotent char", !27, i64 0} |
| !27 = !{!"Simple C++ TBAA"} |
| !28 = !DILocation(line: 4, column: 21, scope: !7) |
| !29 = !DILocation(line: 6, column: 25, scope: !30) |
| !30 = distinct !DILexicalBlock(scope: !31, file: !1, line: 5, column: 21) |
| !31 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 36) |
| !32 = !DILocation(line: 9, column: 1, scope: !7) |