| ; RUN: opt < %s -passes=asan -asan-use-after-return=never -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" |
| |
| @G = global [32 x i8] zeroinitializer, align 32, !dbg !0, !type !6 |
| ; CHECK: @G = global { [32 x i8], [32 x i8] } zeroinitializer{{(, comdat)?}}, align 32, !dbg !0, !type [[TYPE:![0-9]+]] |
| |
| define i32 @_Z3zzzi(i32 %p) nounwind uwtable sanitize_address !dbg !12 { |
| entry: |
| %p.addr = alloca i32, align 4 |
| %r = alloca i32, align 4 |
| store volatile i32 %p, ptr %p.addr, align 4 |
| call void @llvm.dbg.declare(metadata ptr %p.addr, metadata !17, metadata !DIExpression()), !dbg !18 |
| call void @llvm.dbg.declare(metadata ptr %r, metadata !19, metadata !DIExpression()), !dbg !21 |
| %0 = load i32, ptr %p.addr, align 4, !dbg !21 |
| %add = add nsw i32 %0, 1, !dbg !21 |
| store volatile i32 %add, ptr %r, align 4, !dbg !21 |
| %1 = load i32, ptr %r, align 4, !dbg !22 |
| ret i32 %1, !dbg !22 |
| } |
| |
| ; CHECK: define i32 @_Z3zzzi |
| ; CHECK: [[MyAlloca:%.*]] = alloca i8, i64 64 |
| ; Note: these dbg.declares used to contain `ptrtoint` operands. The instruction |
| ; selector would then decline to put the variable in the MachineFunction side |
| ; table. Check that the dbg.declares have `alloca` operands. |
| ; CHECK: call void @llvm.dbg.declare(metadata ptr [[MyAlloca]], metadata ![[ARG_ID:[0-9]+]], metadata !DIExpression(DW_OP_plus_uconst, 32)) |
| ; CHECK: call void @llvm.dbg.declare(metadata ptr [[MyAlloca]], 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 = !{!7} |
| !llvm.module.flags = !{!24} |
| |
| !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) |
| !1 = distinct !DIGlobalVariable(name: "G", type: !2, isLocal: false, isDefinition: true) |
| !2 = !DICompositeType(tag: DW_TAG_array_type, baseType: !3, size: 256, elements: !4) |
| !3 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char) |
| !4 = !{!5} |
| !5 = !DISubrange(count: 32) |
| !6 = !{i64 0, !"G"} |
| ; CHECK: [[TYPE]] = !{i64 0, !"G"} |
| |
| !7 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.3 (trunk 169314)", isOptimized: true, emissionKind: FullDebug, file: !23, enums: !8, retainedTypes: !8, globals: !8) |
| !8 = !{} |
| !12 = distinct !DISubprogram(name: "zzz", linkageName: "_Z3zzzi", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !7, scopeLine: 1, file: !23, scope: !13, type: !14, retainedNodes: !8) |
| !13 = !DIFile(filename: "a.cc", directory: "/usr/local/google/llvm_cmake_clang/tmp/debuginfo") |
| !14 = !DISubroutineType(types: !15) |
| !15 = !{!16, !16} |
| !16 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !17 = !DILocalVariable(name: "p", line: 1, arg: 1, scope: !12, file: !13, type: !16) |
| !18 = !DILocation(line: 1, scope: !12) |
| !19 = !DILocalVariable(name: "r", line: 2, scope: !20, file: !13, type: !16) |
| |
| ; 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 |
| |
| |
| !20 = distinct !DILexicalBlock(line: 1, column: 0, file: !23, scope: !12) |
| !21 = !DILocation(line: 2, scope: !20) |
| !22 = !DILocation(line: 3, scope: !20) |
| !23 = !DIFile(filename: "a.cc", directory: "/usr/local/google/llvm_cmake_clang/tmp/debuginfo") |
| !24 = !{i32 1, !"Debug Info Version", i32 3} |