forked from OSchip/llvm-project
183 lines
6.6 KiB
LLVM
183 lines
6.6 KiB
LLVM
; RUN: llc -O0 -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
|
|
|
|
; Verify that we have correct debug info for local variables in code
|
|
; instrumented with AddressSanitizer.
|
|
|
|
; Generated from the source file test.cc:
|
|
; int bar(int y) {
|
|
; return y + 2;
|
|
; }
|
|
; with "clang++ -S -emit-llvm -fsanitize=address -O0 -g test.cc"
|
|
|
|
; First, argument variable "y" resides in %rdi:
|
|
; CHECK: DEBUG_VALUE: bar:y <- RDI
|
|
|
|
; Then its address is stored in a location on a stack:
|
|
; CHECK: movq %rdi, [[OFFSET:[0-9]+]](%rsp)
|
|
; CHECK-NEXT: [[START_LABEL:.Ltmp[0-9]+]]
|
|
; CHECK-NEXT: DEBUG_VALUE: bar:y <- [RSP+[[OFFSET]]]
|
|
; This location should be valid until the end of the function.
|
|
|
|
; CHECK: .Ldebug_loc{{[0-9]+}}:
|
|
; We expect two location ranges for the variable.
|
|
|
|
; First, its address is stored in %rdi:
|
|
; CHECK: .quad .Lfunc_begin0-.Lfunc_begin0
|
|
; CHECK-NEXT: .quad [[START_LABEL]]-.Lfunc_begin0
|
|
; CHECK: DW_OP_breg5
|
|
|
|
; Then it's addressed via %rsp:
|
|
; CHECK: .quad [[START_LABEL]]-.Lfunc_begin0
|
|
; CHECK-NEXT: .Lfunc_end0-.Lfunc_begin0
|
|
; CHECK: DW_OP_breg7
|
|
; CHECK-NEXT: [[OFFSET]]
|
|
; CHECK: DW_OP_deref
|
|
|
|
; ModuleID = 'test.cc'
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
@llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 1, void ()* @asan.module_ctor }]
|
|
@__asan_option_detect_stack_use_after_return = external global i32
|
|
@__asan_gen_ = private unnamed_addr constant [16 x i8] c"1 32 4 6 y.addr\00", align 1
|
|
|
|
; Function Attrs: nounwind sanitize_address uwtable
|
|
define i32 @_Z3bari(i32 %y) #0 {
|
|
entry:
|
|
%MyAlloca = alloca [64 x i8], align 32
|
|
%0 = ptrtoint [64 x i8]* %MyAlloca to i64
|
|
%1 = load i32, i32* @__asan_option_detect_stack_use_after_return
|
|
%2 = icmp ne i32 %1, 0
|
|
br i1 %2, label %3, label %5
|
|
|
|
; <label>:3 ; preds = %entry
|
|
%4 = call i64 @__asan_stack_malloc_0(i64 64, i64 %0)
|
|
br label %5
|
|
|
|
; <label>:5 ; preds = %entry, %3
|
|
%6 = phi i64 [ %0, %entry ], [ %4, %3 ]
|
|
%7 = add i64 %6, 32
|
|
%8 = inttoptr i64 %7 to i32*
|
|
%9 = inttoptr i64 %6 to i64*
|
|
store i64 1102416563, i64* %9
|
|
%10 = add i64 %6, 8
|
|
%11 = inttoptr i64 %10 to i64*
|
|
store i64 ptrtoint ([16 x i8]* @__asan_gen_ to i64), i64* %11
|
|
%12 = add i64 %6, 16
|
|
%13 = inttoptr i64 %12 to i64*
|
|
store i64 ptrtoint (i32 (i32)* @_Z3bari to i64), i64* %13
|
|
%14 = lshr i64 %6, 3
|
|
%15 = add i64 %14, 2147450880
|
|
%16 = add i64 %15, 0
|
|
%17 = inttoptr i64 %16 to i64*
|
|
store i64 -868083100587789839, i64* %17
|
|
%18 = ptrtoint i32* %8 to i64
|
|
%19 = lshr i64 %18, 3
|
|
%20 = add i64 %19, 2147450880
|
|
%21 = inttoptr i64 %20 to i8*
|
|
%22 = load i8, i8* %21
|
|
%23 = icmp ne i8 %22, 0
|
|
call void @llvm.dbg.declare(metadata i32* %8, metadata !12, metadata !14), !dbg !DILocation(scope: !4)
|
|
br i1 %23, label %24, label %30
|
|
|
|
; <label>:24 ; preds = %5
|
|
%25 = and i64 %18, 7
|
|
%26 = add i64 %25, 3
|
|
%27 = trunc i64 %26 to i8
|
|
%28 = icmp sge i8 %27, %22
|
|
br i1 %28, label %29, label %30
|
|
|
|
; <label>:29 ; preds = %24
|
|
call void @__asan_report_store4(i64 %18)
|
|
call void asm sideeffect "", ""()
|
|
unreachable
|
|
|
|
; <label>:30 ; preds = %24, %5
|
|
store i32 %y, i32* %8, align 4
|
|
%31 = ptrtoint i32* %8 to i64, !dbg !13
|
|
%32 = lshr i64 %31, 3, !dbg !13
|
|
%33 = add i64 %32, 2147450880, !dbg !13
|
|
%34 = inttoptr i64 %33 to i8*, !dbg !13
|
|
%35 = load i8, i8* %34, !dbg !13
|
|
%36 = icmp ne i8 %35, 0, !dbg !13
|
|
br i1 %36, label %37, label %43, !dbg !13
|
|
|
|
; <label>:37 ; preds = %30
|
|
%38 = and i64 %31, 7, !dbg !13
|
|
%39 = add i64 %38, 3, !dbg !13
|
|
%40 = trunc i64 %39 to i8, !dbg !13
|
|
%41 = icmp sge i8 %40, %35, !dbg !13
|
|
br i1 %41, label %42, label %43
|
|
|
|
; <label>:42 ; preds = %37
|
|
call void @__asan_report_load4(i64 %31), !dbg !13
|
|
call void asm sideeffect "", ""()
|
|
unreachable
|
|
|
|
; <label>:43 ; preds = %37, %30
|
|
%44 = load i32, i32* %8, align 4, !dbg !13
|
|
%add = add nsw i32 %44, 2, !dbg !13
|
|
store i64 1172321806, i64* %9, !dbg !13
|
|
%45 = icmp ne i64 %6, %0, !dbg !13
|
|
br i1 %45, label %46, label %53, !dbg !13
|
|
|
|
; <label>:46 ; preds = %43
|
|
%47 = add i64 %15, 0, !dbg !13
|
|
%48 = inttoptr i64 %47 to i64*, !dbg !13
|
|
store i64 -723401728380766731, i64* %48, !dbg !13
|
|
%49 = add i64 %6, 56, !dbg !13
|
|
%50 = inttoptr i64 %49 to i64*, !dbg !13
|
|
%51 = load i64, i64* %50, !dbg !13
|
|
%52 = inttoptr i64 %51 to i8*, !dbg !13
|
|
store i8 0, i8* %52, !dbg !13
|
|
br label %56, !dbg !13
|
|
|
|
; <label>:53 ; preds = %43
|
|
%54 = add i64 %15, 0, !dbg !13
|
|
%55 = inttoptr i64 %54 to i64*, !dbg !13
|
|
store i64 0, i64* %55, !dbg !13
|
|
br label %56, !dbg !13
|
|
|
|
; <label>:56 ; preds = %53, %46
|
|
ret i32 %add, !dbg !13
|
|
}
|
|
|
|
; Function Attrs: nounwind readnone
|
|
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
|
|
|
|
define internal void @asan.module_ctor() {
|
|
call void @__asan_init_v3()
|
|
ret void
|
|
}
|
|
|
|
declare void @__asan_init_v3()
|
|
|
|
declare void @__asan_report_load4(i64)
|
|
|
|
declare void @__asan_report_store4(i64)
|
|
|
|
declare i64 @__asan_stack_malloc_0(i64, i64)
|
|
|
|
attributes #0 = { nounwind sanitize_address uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
|
attributes #1 = { nounwind readnone }
|
|
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!9, !10}
|
|
!llvm.ident = !{!11}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (209308)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
|
|
!1 = !DIFile(filename: "test.cc", directory: "/llvm_cmake_gcc")
|
|
!2 = !{}
|
|
!3 = !{!4}
|
|
!4 = distinct !DISubprogram(name: "bar", linkageName: "_Z3bari", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !1, scope: !5, type: !6, function: i32 (i32)* @_Z3bari, variables: !2)
|
|
!5 = !DIFile(filename: "test.cc", directory: "/llvm_cmake_gcc")
|
|
!6 = !DISubroutineType(types: !7)
|
|
!7 = !{!8, !8}
|
|
!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
|
|
!9 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!10 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!11 = !{!"clang version 3.5.0 (209308)"}
|
|
!12 = !DILocalVariable(name: "y", line: 1, arg: 1, scope: !4, file: !5, type: !8)
|
|
!13 = !DILocation(line: 2, scope: !4)
|
|
!14 = !DIExpression(DW_OP_deref)
|