74 lines
4.0 KiB
LLVM
74 lines
4.0 KiB
LLVM
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; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-use-after-return=0 -S | FileCheck %s
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; RUN: opt < %s -passes='asan-pipeline' -asan-use-after-return=0 -S | FileCheck %s
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; Checks that llvm.dbg.declare instructions are updated
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; accordingly as we merge allocas.
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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"
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target triple = "x86_64-unknown-linux-gnu"
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@G = global [32 x i8] zeroinitializer, align 32, !dbg !0, !type !6
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; CHECK: @G = global { [32 x i8], [32 x i8] } zeroinitializer{{(, comdat)?}}, align 32, !dbg !0, !type [[TYPE:![0-9]+]]
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define i32 @_Z3zzzi(i32 %p) nounwind uwtable sanitize_address !dbg !12 {
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entry:
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%p.addr = alloca i32, align 4
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%r = alloca i32, align 4
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store volatile i32 %p, i32* %p.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %p.addr, metadata !17, metadata !DIExpression()), !dbg !18
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call void @llvm.dbg.declare(metadata i32* %r, metadata !19, metadata !DIExpression()), !dbg !21
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%0 = load i32, i32* %p.addr, align 4, !dbg !21
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%add = add nsw i32 %0, 1, !dbg !21
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store volatile i32 %add, i32* %r, align 4, !dbg !21
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%1 = load i32, i32* %r, align 4, !dbg !22
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ret i32 %1, !dbg !22
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}
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; CHECK: define i32 @_Z3zzzi
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; CHECK: [[MyAlloca:%.*]] = alloca i8, i64 64
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; Note: these dbg.declares used to contain `ptrtoint` operands. The instruction
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; selector would then decline to put the variable in the MachineFunction side
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; table. Check that the dbg.declares have `alloca` operands.
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; CHECK: call void @llvm.dbg.declare(metadata i8* [[MyAlloca]], metadata ![[ARG_ID:[0-9]+]], metadata !DIExpression(DW_OP_plus_uconst, 32))
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; CHECK: call void @llvm.dbg.declare(metadata i8* [[MyAlloca]], metadata ![[VAR_ID:[0-9]+]], metadata !DIExpression(DW_OP_plus_uconst, 48))
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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!llvm.dbg.cu = !{!7}
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!llvm.module.flags = !{!24}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "G", type: !2, isLocal: false, isDefinition: true)
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!2 = !DICompositeType(tag: DW_TAG_array_type, baseType: !3, size: 256, elements: !4)
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!3 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)
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!4 = !{!5}
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!5 = !DISubrange(count: 32)
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!6 = !{i64 0, !"G"}
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; CHECK: [[TYPE]] = !{i64 0, !"G"}
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!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)
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!8 = !{}
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!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)
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!13 = !DIFile(filename: "a.cc", directory: "/usr/local/google/llvm_cmake_clang/tmp/debuginfo")
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!14 = !DISubroutineType(types: !15)
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!15 = !{!16, !16}
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!16 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!17 = !DILocalVariable(name: "p", line: 1, arg: 1, scope: !12, file: !13, type: !16)
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!18 = !DILocation(line: 1, scope: !12)
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!19 = !DILocalVariable(name: "r", line: 2, scope: !20, file: !13, type: !16)
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; Verify that debug descriptors for argument and local variable will be replaced
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; with descriptors that end with OpDeref (encoded as 2).
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; CHECK: ![[ARG_ID]] = !DILocalVariable(name: "p", arg: 1,{{.*}} line: 1
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; CHECK: ![[VAR_ID]] = !DILocalVariable(name: "r",{{.*}} line: 2
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; Verify that there are no more variable descriptors.
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; CHECK-NOT: !DILocalVariable(tag: DW_TAG_arg_variable
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; CHECK-NOT: !DILocalVariable(tag: DW_TAG_auto_variable
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!20 = distinct !DILexicalBlock(line: 1, column: 0, file: !23, scope: !12)
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!21 = !DILocation(line: 2, scope: !20)
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!22 = !DILocation(line: 3, scope: !20)
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!23 = !DIFile(filename: "a.cc", directory: "/usr/local/google/llvm_cmake_clang/tmp/debuginfo")
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!24 = !{i32 1, !"Debug Info Version", i32 3}
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