mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-27 15:29:51 +00:00
392 lines
17 KiB
LLVM
392 lines
17 KiB
LLVM
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; REQUIRES: object-emission
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; RUN: %llc_dwarf -O2 -filetype=obj < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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; This is a test case that's as reduced as I can get it, though I haven't fully
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; understood the mechanisms by which this bug occurs, so perhaps there's further
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; simplification to be had (it's certainly a bit non-obvious what's going on). I
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; hesitate to hand-craft or otherwise simplify the IR compared to what Clang
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; generates as this is a particular tickling of optimizations and debug location
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; propagation I want a realistic example of.
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; Generated with clang-tot -cc1 -g -O2 -w -std=c++11 -fsanitize=address,use-after-return -fcxx-exceptions -fexceptions -x c++ incorrect-variable-debug-loc.cpp -emit-llvm
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; struct A {
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; int m_fn1();
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; };
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;
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; struct B {
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; void __attribute__((always_inline)) m_fn2() { i = 0; }
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; int i;
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; };
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;
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; struct C {
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; void m_fn3();
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; int j;
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; B b;
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; };
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;
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; int fn1() {
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; C A;
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; A.b.m_fn2();
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; A.m_fn3();
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; }
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; void C::m_fn3() {
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; A().m_fn1();
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; b.m_fn2();
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; }
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; CHECK: DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_name {{.*}} "C"
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; CHECK: [[FN3_DECL:.*]]: DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name {{.*}} "m_fn3"
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; CHECK: DW_AT_specification {{.*}} {[[FN3_DECL]]}
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; CHECK-NOT: DW_TAG
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; CHECK: DW_TAG_formal_parameter
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name {{.*}} "this"
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%struct.C = type { i32, %struct.B }
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%struct.B = type { i32 }
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%struct.A = type { i8 }
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@llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 1, void ()* @asan.module_ctor }]
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@__asan_option_detect_stack_use_after_return = external global i32
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@__asan_gen_ = private unnamed_addr constant [11 x i8] c"1 32 8 1 A\00", align 1
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@__asan_gen_1 = private unnamed_addr constant [13 x i8] c"1 32 1 3 tmp\00", align 1
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; Function Attrs: noreturn sanitize_address
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define i32 @_Z3fn1v() #0 {
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entry:
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%MyAlloca = alloca [64 x i8], align 32, !dbg !39
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%0 = ptrtoint [64 x i8]* %MyAlloca to i64, !dbg !39
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%1 = load i32* @__asan_option_detect_stack_use_after_return, !dbg !39
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%2 = icmp ne i32 %1, 0, !dbg !39
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br i1 %2, label %3, label %5
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; <label>:3 ; preds = %entry
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%4 = call i64 @__asan_stack_malloc_0(i64 64, i64 %0), !dbg !39
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br label %5
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; <label>:5 ; preds = %entry, %3
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%6 = phi i64 [ %0, %entry ], [ %4, %3 ], !dbg !39
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%7 = add i64 %6, 32, !dbg !39
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%8 = inttoptr i64 %7 to %struct.C*, !dbg !39
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%9 = inttoptr i64 %6 to i64*, !dbg !39
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store i64 1102416563, i64* %9, !dbg !39
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%10 = add i64 %6, 8, !dbg !39
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%11 = inttoptr i64 %10 to i64*, !dbg !39
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store i64 ptrtoint ([11 x i8]* @__asan_gen_ to i64), i64* %11, !dbg !39
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%12 = add i64 %6, 16, !dbg !39
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%13 = inttoptr i64 %12 to i64*, !dbg !39
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store i64 ptrtoint (i32 ()* @_Z3fn1v to i64), i64* %13, !dbg !39
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%14 = lshr i64 %6, 3, !dbg !39
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%15 = add i64 %14, 2147450880, !dbg !39
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%16 = add i64 %15, 0, !dbg !39
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%17 = inttoptr i64 %16 to i64*, !dbg !39
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store i64 -868083117767659023, i64* %17, !dbg !39
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%i.i = getelementptr inbounds %struct.C* %8, i64 0, i32 1, i32 0, !dbg !39
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%18 = ptrtoint i32* %i.i to i64, !dbg !39
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%19 = lshr i64 %18, 3, !dbg !39
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%20 = add i64 %19, 2147450880, !dbg !39
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%21 = inttoptr i64 %20 to i8*, !dbg !39
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%22 = load i8* %21, !dbg !39
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%23 = icmp ne i8 %22, 0, !dbg !39
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br i1 %23, label %24, label %30, !dbg !39
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; <label>:24 ; preds = %5
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%25 = and i64 %18, 7, !dbg !39
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%26 = add i64 %25, 3, !dbg !39
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%27 = trunc i64 %26 to i8, !dbg !39
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%28 = icmp sge i8 %27, %22, !dbg !39
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br i1 %28, label %29, label %30
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; <label>:29 ; preds = %24
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call void @__asan_report_store4(i64 %18), !dbg !39
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call void asm sideeffect "", ""()
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unreachable
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; <label>:30 ; preds = %24, %5
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store i32 0, i32* %i.i, align 4, !dbg !39, !tbaa !41
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tail call void @llvm.dbg.value(metadata !{%struct.C* %8}, i64 0, metadata !27), !dbg !46
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call void @_ZN1C5m_fn3Ev(%struct.C* %8), !dbg !47
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unreachable, !dbg !47
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}
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; Function Attrs: sanitize_address
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define void @_ZN1C5m_fn3Ev(%struct.C* nocapture %this) #1 align 2 {
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entry:
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%MyAlloca = alloca [64 x i8], align 32, !dbg !48
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%0 = ptrtoint [64 x i8]* %MyAlloca to i64, !dbg !48
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%1 = load i32* @__asan_option_detect_stack_use_after_return, !dbg !48
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%2 = icmp ne i32 %1, 0, !dbg !48
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br i1 %2, label %3, label %5
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; <label>:3 ; preds = %entry
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%4 = call i64 @__asan_stack_malloc_0(i64 64, i64 %0), !dbg !48
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br label %5
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; <label>:5 ; preds = %entry, %3
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%6 = phi i64 [ %0, %entry ], [ %4, %3 ], !dbg !48
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%7 = add i64 %6, 32, !dbg !48
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%8 = inttoptr i64 %7 to %struct.A*, !dbg !48
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%9 = inttoptr i64 %6 to i64*, !dbg !48
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store i64 1102416563, i64* %9, !dbg !48
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%10 = add i64 %6, 8, !dbg !48
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%11 = inttoptr i64 %10 to i64*, !dbg !48
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store i64 ptrtoint ([13 x i8]* @__asan_gen_1 to i64), i64* %11, !dbg !48
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%12 = add i64 %6, 16, !dbg !48
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%13 = inttoptr i64 %12 to i64*, !dbg !48
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store i64 ptrtoint (void (%struct.C*)* @_ZN1C5m_fn3Ev to i64), i64* %13, !dbg !48
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%14 = lshr i64 %6, 3, !dbg !48
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%15 = add i64 %14, 2147450880, !dbg !48
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%16 = add i64 %15, 0, !dbg !48
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%17 = inttoptr i64 %16 to i64*, !dbg !48
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store i64 -868083113472691727, i64* %17, !dbg !48
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tail call void @llvm.dbg.value(metadata !{%struct.C* %this}, i64 0, metadata !30), !dbg !48
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%call = call i32 @_ZN1A5m_fn1Ev(%struct.A* %8), !dbg !49
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%i.i = getelementptr inbounds %struct.C* %this, i64 0, i32 1, i32 0, !dbg !50
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%18 = ptrtoint i32* %i.i to i64, !dbg !50
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%19 = lshr i64 %18, 3, !dbg !50
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%20 = add i64 %19, 2147450880, !dbg !50
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%21 = inttoptr i64 %20 to i8*, !dbg !50
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%22 = load i8* %21, !dbg !50
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%23 = icmp ne i8 %22, 0, !dbg !50
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br i1 %23, label %24, label %30, !dbg !50
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; <label>:24 ; preds = %5
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%25 = and i64 %18, 7, !dbg !50
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%26 = add i64 %25, 3, !dbg !50
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%27 = trunc i64 %26 to i8, !dbg !50
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%28 = icmp sge i8 %27, %22, !dbg !50
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br i1 %28, label %29, label %30
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; <label>:29 ; preds = %24
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call void @__asan_report_store4(i64 %18), !dbg !50
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call void asm sideeffect "", ""()
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unreachable
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; <label>:30 ; preds = %24, %5
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store i32 0, i32* %i.i, align 4, !dbg !50, !tbaa !41
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store i64 1172321806, i64* %9, !dbg !52
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%31 = icmp ne i64 %6, %0, !dbg !52
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br i1 %31, label %32, label %39, !dbg !52
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; <label>:32 ; preds = %30
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%33 = add i64 %15, 0, !dbg !52
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%34 = inttoptr i64 %33 to i64*, !dbg !52
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store i64 -723401728380766731, i64* %34, !dbg !52
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%35 = add i64 %6, 56, !dbg !52
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%36 = inttoptr i64 %35 to i64*, !dbg !52
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%37 = load i64* %36, !dbg !52
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%38 = inttoptr i64 %37 to i8*, !dbg !52
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store i8 0, i8* %38, !dbg !52
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br label %42, !dbg !52
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; <label>:39 ; preds = %30
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%40 = add i64 %15, 0, !dbg !52
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%41 = inttoptr i64 %40 to i64*, !dbg !52
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store i64 0, i64* %41, !dbg !52
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br label %42, !dbg !52
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; <label>:42 ; preds = %39, %32
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ret void, !dbg !52
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}
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declare i32 @_ZN1A5m_fn1Ev(%struct.A*) #2
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata) #3
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define internal void @asan.module_ctor() {
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tail call void @__asan_init_v3()
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ret void
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}
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declare void @__asan_init_v3()
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declare void @__asan_report_load1(i64)
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declare void @__asan_load1(i64)
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declare void @__asan_report_load2(i64)
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declare void @__asan_load2(i64)
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declare void @__asan_report_load4(i64)
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declare void @__asan_load4(i64)
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declare void @__asan_report_load8(i64)
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declare void @__asan_load8(i64)
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declare void @__asan_report_load16(i64)
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declare void @__asan_load16(i64)
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declare void @__asan_report_store1(i64)
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declare void @__asan_store1(i64)
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declare void @__asan_report_store2(i64)
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declare void @__asan_store2(i64)
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declare void @__asan_report_store4(i64)
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declare void @__asan_store4(i64)
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declare void @__asan_report_store8(i64)
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declare void @__asan_store8(i64)
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declare void @__asan_report_store16(i64)
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declare void @__asan_store16(i64)
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declare void @__asan_report_load_n(i64, i64)
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declare void @__asan_report_store_n(i64, i64)
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declare void @__asan_loadN(i64, i64)
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declare void @__asan_storeN(i64, i64)
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declare i8* @__asan_memmove(i8*, i8*, i64)
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declare i8* @__asan_memcpy(i8*, i8*, i64)
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declare i8* @__asan_memset(i8*, i32, i64)
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declare void @__asan_handle_no_return()
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declare void @__sanitizer_cov()
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declare void @__sanitizer_ptr_cmp(i64, i64)
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declare void @__sanitizer_ptr_sub(i64, i64)
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declare i64 @__asan_stack_malloc_0(i64, i64)
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declare void @__asan_stack_free_0(i64, i64, i64)
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declare i64 @__asan_stack_malloc_1(i64, i64)
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declare void @__asan_stack_free_1(i64, i64, i64)
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declare i64 @__asan_stack_malloc_2(i64, i64)
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declare void @__asan_stack_free_2(i64, i64, i64)
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declare i64 @__asan_stack_malloc_3(i64, i64)
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declare void @__asan_stack_free_3(i64, i64, i64)
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declare i64 @__asan_stack_malloc_4(i64, i64)
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declare void @__asan_stack_free_4(i64, i64, i64)
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declare i64 @__asan_stack_malloc_5(i64, i64)
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declare void @__asan_stack_free_5(i64, i64, i64)
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declare i64 @__asan_stack_malloc_6(i64, i64)
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declare void @__asan_stack_free_6(i64, i64, i64)
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declare i64 @__asan_stack_malloc_7(i64, i64)
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declare void @__asan_stack_free_7(i64, i64, i64)
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declare i64 @__asan_stack_malloc_8(i64, i64)
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declare void @__asan_stack_free_8(i64, i64, i64)
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declare i64 @__asan_stack_malloc_9(i64, i64)
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declare void @__asan_stack_free_9(i64, i64, i64)
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declare i64 @__asan_stack_malloc_10(i64, i64)
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declare void @__asan_stack_free_10(i64, i64, i64)
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declare void @__asan_poison_stack_memory(i64, i64)
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declare void @__asan_unpoison_stack_memory(i64, i64)
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declare void @__asan_before_dynamic_init(i64)
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declare void @__asan_after_dynamic_init()
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declare void @__asan_register_globals(i64, i64)
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declare void @__asan_unregister_globals(i64, i64)
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declare void @__sanitizer_cov_module_init(i64)
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attributes #0 = { noreturn sanitize_address "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { sanitize_address "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #3 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!36, !37}
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!llvm.ident = !{!38}
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!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.5.0 ", i1 true, metadata !"", i32 0, metadata !2, metadata !3, metadata !21, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/<stdin>] [DW_LANG_C_plus_plus]
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!1 = metadata !{metadata !"<stdin>", metadata !"/tmp/dbginfo"}
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!2 = metadata !{}
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!3 = metadata !{metadata !4, metadata !14}
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!4 = metadata !{i32 786451, metadata !5, null, metadata !"C", i32 10, i64 64, i64 32, i32 0, i32 0, null, metadata !6, i32 0, null, null, metadata !"_ZTS1C"} ; [ DW_TAG_structure_type ] [C] [line 10, size 64, align 32, offset 0] [def] [from ]
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!5 = metadata !{metadata !"incorrect-variable-debug-loc.cpp", metadata !"/tmp/dbginfo"}
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!6 = metadata !{metadata !7, metadata !9, metadata !10}
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||
|
!7 = metadata !{i32 786445, metadata !5, metadata !"_ZTS1C", metadata !"j", i32 12, i64 32, i64 32, i64 0, i32 0, metadata !8} ; [ DW_TAG_member ] [j] [line 12, size 32, align 32, offset 0] [from int]
|
||
|
!8 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed]
|
||
|
!9 = metadata !{i32 786445, metadata !5, metadata !"_ZTS1C", metadata !"b", i32 13, i64 32, i64 32, i64 32, i32 0, metadata !"_ZTS1B"} ; [ DW_TAG_member ] [b] [line 13, size 32, align 32, offset 32] [from _ZTS1B]
|
||
|
!10 = metadata !{i32 786478, metadata !5, metadata !"_ZTS1C", metadata !"m_fn3", metadata !"m_fn3", metadata !"_ZN1C5m_fn3Ev", i32 11, metadata !11, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 true, null, null, i32 0, null, i32 11} ; [ DW_TAG_subprogram ] [line 11] [m_fn3]
|
||
|
!11 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !12, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
|
||
|
!12 = metadata !{null, metadata !13}
|
||
|
!13 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1C]
|
||
|
!14 = metadata !{i32 786451, metadata !5, null, metadata !"B", i32 5, i64 32, i64 32, i32 0, i32 0, null, metadata !15, i32 0, null, null, metadata !"_ZTS1B"} ; [ DW_TAG_structure_type ] [B] [line 5, size 32, align 32, offset 0] [def] [from ]
|
||
|
!15 = metadata !{metadata !16, metadata !17}
|
||
|
!16 = metadata !{i32 786445, metadata !5, metadata !"_ZTS1B", metadata !"i", i32 7, i64 32, i64 32, i64 0, i32 0, metadata !8} ; [ DW_TAG_member ] [i] [line 7, size 32, align 32, offset 0] [from int]
|
||
|
!17 = metadata !{i32 786478, metadata !5, metadata !"_ZTS1B", metadata !"m_fn2", metadata !"m_fn2", metadata !"_ZN1B5m_fn2Ev", i32 6, metadata !18, i1 false, i1 false, i32 0, i32 0, null, i32 256, i1 true, null, null, i32 0, null, i32 6} ; [ DW_TAG_subprogram ] [line 6] [m_fn2]
|
||
|
!18 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !19, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
|
||
|
!19 = metadata !{null, metadata !20}
|
||
|
!20 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !"_ZTS1B"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1B]
|
||
|
!21 = metadata !{metadata !22, metadata !28, metadata !32}
|
||
|
!22 = metadata !{i32 786478, metadata !5, metadata !23, metadata !"fn1", metadata !"fn1", metadata !"_Z3fn1v", i32 16, metadata !24, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, i32 ()* @_Z3fn1v, null, null, metadata !26, i32 16} ; [ DW_TAG_subprogram ] [line 16] [def] [fn1]
|
||
|
!23 = metadata !{i32 786473, metadata !5} ; [ DW_TAG_file_type ] [/tmp/dbginfo/incorrect-variable-debug-loc.cpp]
|
||
|
!24 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !25, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
|
||
|
!25 = metadata !{metadata !8}
|
||
|
!26 = metadata !{metadata !27}
|
||
|
!27 = metadata !{i32 786688, metadata !22, metadata !"A", metadata !23, i32 17, metadata !"_ZTS1C", i32 0, i32 0} ; [ DW_TAG_auto_variable ] [A] [line 17]
|
||
|
!28 = metadata !{i32 786478, metadata !5, metadata !"_ZTS1C", metadata !"m_fn3", metadata !"m_fn3", metadata !"_ZN1C5m_fn3Ev", i32 21, metadata !11, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, void (%struct.C*)* @_ZN1C5m_fn3Ev, null, metadata !10, metadata !29, i32 21} ; [ DW_TAG_subprogram ] [line 21] [def] [m_fn3]
|
||
|
!29 = metadata !{metadata !30}
|
||
|
!30 = metadata !{i32 786689, metadata !28, metadata !"this", null, i32 16777216, metadata !31, i32 1088, i32 0} ; [ DW_TAG_arg_variable ] [this] [line 0]
|
||
|
!31 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS1C]
|
||
|
!32 = metadata !{i32 786478, metadata !5, metadata !"_ZTS1B", metadata !"m_fn2", metadata !"m_fn2", metadata !"_ZN1B5m_fn2Ev", i32 6, metadata !18, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 true, null, null, metadata !17, metadata !33, i32 6} ; [ DW_TAG_subprogram ] [line 6] [def] [m_fn2]
|
||
|
!33 = metadata !{metadata !34}
|
||
|
!34 = metadata !{i32 786689, metadata !32, metadata !"this", null, i32 16777216, metadata !35, i32 1088, i32 0} ; [ DW_TAG_arg_variable ] [this] [line 0]
|
||
|
!35 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !"_ZTS1B"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS1B]
|
||
|
!36 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
|
||
|
!37 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
|
||
|
!38 = metadata !{metadata !"clang version 3.5.0 "}
|
||
|
!39 = metadata !{i32 6, i32 0, metadata !32, metadata !40}
|
||
|
!40 = metadata !{i32 18, i32 0, metadata !22, null}
|
||
|
!41 = metadata !{metadata !42, metadata !43, i64 0}
|
||
|
!42 = metadata !{metadata !"_ZTS1B", metadata !43, i64 0}
|
||
|
!43 = metadata !{metadata !"int", metadata !44, i64 0}
|
||
|
!44 = metadata !{metadata !"omnipotent char", metadata !45, i64 0}
|
||
|
!45 = metadata !{metadata !"Simple C/C++ TBAA"}
|
||
|
!46 = metadata !{i32 17, i32 0, metadata !22, null}
|
||
|
!47 = metadata !{i32 19, i32 0, metadata !22, null}
|
||
|
!48 = metadata !{i32 0, i32 0, metadata !28, null}
|
||
|
!49 = metadata !{i32 22, i32 0, metadata !28, null}
|
||
|
!50 = metadata !{i32 6, i32 0, metadata !32, metadata !51}
|
||
|
!51 = metadata !{i32 23, i32 0, metadata !28, null}
|
||
|
!52 = metadata !{i32 24, i32 0, metadata !28, null}
|