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llvm-mirror/test/DebugInfo/X86/debug-loc-asan.ll
Adrian Prantl 37ec73c718 llvm-dwarfdump: Replace -debug-dump=sect option with individual options. 
As discussed on llvm-dev in
http://lists.llvm.org/pipermail/llvm-dev/2017-September/117301.html
this changes the command line interface of llvm-dwarfdump to match the
one used by the dwarfdump utility shipping on macOS. In addition to
being shorter to type this format also has the advantage of allowing
more than one section to be specified at the same time.

In a nutshell, with this change

  $ llvm-dwarfdump --debug-dump=info
  $ llvm-dwarfdump --debug-dump=apple-objc

becomes

  $ dwarfdump --debug-info --apple-objc

Differential Revision: https://reviews.llvm.org/D37714

llvm-svn: 312970
2017-09-11 22:59:45 +00:00

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; RUN: llc -O0 -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
; RUN: llc -O0 -mtriple=x86_64-unknown-linux-gnu -filetype=obj < %s \
; RUN: | llvm-dwarfdump -debug-info - | FileCheck %s --check-prefix=DWARF
; 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 -mllvm -asan-skip-promotable-allocas=0 -fsanitize=address -O0 -g test.cc"
; The address of the (potentially now malloc'ed) alloca ends up
; in RDI, after which it is spilled to the stack. We record the
; spill OFFSET on the stack for checking the debug info below.
; CHECK: #DEBUG_VALUE: bar:y <- [DW_OP_deref] [%RDI+0]
; CHECK: movq %rdi, [[OFFSET:[0-9]+]](%rsp)
; CHECK-NEXT: [[START_LABEL:.Ltmp[0-9]+]]
; CHECK-NEXT: #DEBUG_VALUE: bar:y <- [DW_OP_plus_uconst [[OFFSET]], DW_OP_deref, DW_OP_deref]
; This location should be valid until the end of the function.
; CHECK: movq %rbp, %rsp
; CHECK-NEXT: [[END_LABEL:.Ltmp[0-9]+]]:
; 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
; DWARF: DW_TAG_formal_parameter
; DWARF: DW_AT_location
; DWARF-NEXT: {{.*}} - {{.*}}: DW_OP_breg5 RDI+0, DW_OP_deref
; Then it's addressed via %rsp:
; CHECK: .quad [[START_LABEL]]-.Lfunc_begin0
; CHECK-NEXT: .quad [[END_LABEL]]-.Lfunc_begin0
; CHECK: DW_OP_breg7
; CHECK-NEXT: [[OFFSET]]
; CHECK: DW_OP_deref
; DWARF-NEXT: {{.*}} - {{.*}}: DW_OP_breg7 RSP+{{[0-9]+}}, DW_OP_deref, 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 !dbg !4 {
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: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
!1 = !DIFile(filename: "test.cc", directory: "/llvm_cmake_gcc")
!2 = !{}
!4 = distinct !DISubprogram(name: "bar", linkageName: "_Z3bari", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, 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)
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