| ; RUN: opt < %s -asan -asan-module -asan-use-after-return=0 -S | FileCheck %s |
| |
| ; Checks that llvm.dbg.declare instructions are updated |
| ; accordingly as we merge allocas. |
| |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define i32 @_Z3zzzi(i32 %p) nounwind uwtable sanitize_address !dbg !5 { |
| entry: |
| %p.addr = alloca i32, align 4 |
| %r = alloca i32, align 4 |
| store volatile i32 %p, i32* %p.addr, align 4 |
| call void @llvm.dbg.declare(metadata i32* %p.addr, metadata !10, metadata !DIExpression()), !dbg !11 |
| call void @llvm.dbg.declare(metadata i32* %r, metadata !12, metadata !DIExpression()), !dbg !14 |
| %0 = load i32, i32* %p.addr, align 4, !dbg !14 |
| %add = add nsw i32 %0, 1, !dbg !14 |
| store volatile i32 %add, i32* %r, align 4, !dbg !14 |
| %1 = load i32, i32* %r, align 4, !dbg !15 |
| ret i32 %1, !dbg !15 |
| } |
| |
| ; CHECK: define i32 @_Z3zzzi |
| ; CHECK: entry: |
| ; Verify that llvm.dbg.declare calls are in the entry basic block. |
| ; CHECK-NOT: %entry |
| ; CHECK: call void @llvm.dbg.declare(metadata {{.*}}, metadata ![[ARG_ID:[0-9]+]], metadata !DIExpression(DW_OP_plus_uconst, 32)) |
| ; CHECK-NOT: %entry |
| ; CHECK: call void @llvm.dbg.declare(metadata {{.*}}, metadata ![[VAR_ID:[0-9]+]], metadata !DIExpression(DW_OP_plus_uconst, 48)) |
| |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!17} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 169314)", isOptimized: true, emissionKind: FullDebug, file: !16, enums: !1, retainedTypes: !1, globals: !1) |
| !1 = !{} |
| !5 = distinct !DISubprogram(name: "zzz", linkageName: "_Z3zzzi", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !16, scope: !6, type: !7, retainedNodes: !1) |
| !6 = !DIFile(filename: "a.cc", directory: "/usr/local/google/llvm_cmake_clang/tmp/debuginfo") |
| !7 = !DISubroutineType(types: !8) |
| !8 = !{!9, !9} |
| !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !10 = !DILocalVariable(name: "p", line: 1, arg: 1, scope: !5, file: !6, type: !9) |
| !11 = !DILocation(line: 1, scope: !5) |
| !12 = !DILocalVariable(name: "r", line: 2, scope: !13, file: !6, type: !9) |
| |
| ; Verify that debug descriptors for argument and local variable will be replaced |
| ; with descriptors that end with OpDeref (encoded as 2). |
| ; CHECK: ![[ARG_ID]] = !DILocalVariable(name: "p", arg: 1,{{.*}} line: 1 |
| ; CHECK: ![[VAR_ID]] = !DILocalVariable(name: "r",{{.*}} line: 2 |
| ; Verify that there are no more variable descriptors. |
| ; CHECK-NOT: !DILocalVariable(tag: DW_TAG_arg_variable |
| ; CHECK-NOT: !DILocalVariable(tag: DW_TAG_auto_variable |
| |
| |
| !13 = distinct !DILexicalBlock(line: 1, column: 0, file: !16, scope: !5) |
| !14 = !DILocation(line: 2, scope: !13) |
| !15 = !DILocation(line: 3, scope: !13) |
| !16 = !DIFile(filename: "a.cc", directory: "/usr/local/google/llvm_cmake_clang/tmp/debuginfo") |
| !17 = !{i32 1, !"Debug Info Version", i32 3} |