mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-08 18:30:04 +00:00
b056aa798d
Move the specialized metadata nodes for the new debug info hierarchy
into place, finishing off PR22464. I've done bootstraps (and all that)
and I'm confident this commit is NFC as far as DWARF output is
concerned. Let me know if I'm wrong :).
The code changes are fairly mechanical:
- Bumped the "Debug Info Version".
- `DIBuilder` now creates the appropriate subclass of `MDNode`.
- Subclasses of DIDescriptor now expect to hold their "MD"
counterparts (e.g., `DIBasicType` expects `MDBasicType`).
- Deleted a ton of dead code in `AsmWriter.cpp` and `DebugInfo.cpp`
for printing comments.
- Big update to LangRef to describe the nodes in the new hierarchy.
Feel free to make it better.
Testcase changes are enormous. There's an accompanying clang commit on
its way.
If you have out-of-tree debug info testcases, I just broke your build.
- `upgrade-specialized-nodes.sh` is attached to PR22564. I used it to
update all the IR testcases.
- Unfortunately I failed to find way to script the updates to CHECK
lines, so I updated all of these by hand. This was fairly painful,
since the old CHECKs are difficult to reason about. That's one of
the benefits of the new hierarchy.
This work isn't quite finished, BTW. The `DIDescriptor` subclasses are
almost empty wrappers, but not quite: they still have loose casting
checks (see the `RETURN_FROM_RAW()` macro). Once they're completely
gutted, I'll rename the "MD" classes to "DI" and kill the wrappers. I
also expect to make a few schema changes now that it's easier to reason
about everything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231082 91177308-0d34-0410-b5e6-96231b3b80d8
392 lines
15 KiB
LLVM
392 lines
15 KiB
LLVM
; 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: 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 {{.*}} "_ZN1C5m_fn3Ev"
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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, 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, %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, 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, metadata !MDExpression()), !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, 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, metadata !MDExpression()), !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, %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, 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, 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, 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 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !21, globals: !2, imports: !2)
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!1 = !MDFile(filename: "<stdin>", directory: "/tmp/dbginfo")
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!2 = !{}
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!3 = !{!4, !14}
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!4 = !MDCompositeType(tag: DW_TAG_structure_type, name: "C", line: 10, size: 64, align: 32, file: !5, elements: !6, identifier: "_ZTS1C")
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!5 = !MDFile(filename: "incorrect-variable-debug-loc.cpp", directory: "/tmp/dbginfo")
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!6 = !{!7, !9, !10}
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!7 = !MDDerivedType(tag: DW_TAG_member, name: "j", line: 12, size: 32, align: 32, file: !5, scope: !"_ZTS1C", baseType: !8)
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!8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !MDDerivedType(tag: DW_TAG_member, name: "b", line: 13, size: 32, align: 32, offset: 32, file: !5, scope: !"_ZTS1C", baseType: !"_ZTS1B")
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!10 = !MDSubprogram(name: "m_fn3", linkageName: "_ZN1C5m_fn3Ev", line: 11, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 11, file: !5, scope: !"_ZTS1C", type: !11)
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!11 = !MDSubroutineType(types: !12)
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!12 = !{null, !13}
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!13 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1C")
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!14 = !MDCompositeType(tag: DW_TAG_structure_type, name: "B", line: 5, size: 32, align: 32, file: !5, elements: !15, identifier: "_ZTS1B")
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!15 = !{!16, !17}
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!16 = !MDDerivedType(tag: DW_TAG_member, name: "i", line: 7, size: 32, align: 32, file: !5, scope: !"_ZTS1B", baseType: !8)
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!17 = !MDSubprogram(name: "m_fn2", linkageName: "_ZN1B5m_fn2Ev", line: 6, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 6, file: !5, scope: !"_ZTS1B", type: !18)
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|
!18 = !MDSubroutineType(types: !19)
|
|
!19 = !{null, !20}
|
|
!20 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1B")
|
|
!21 = !{!22, !28, !32}
|
|
!22 = !MDSubprogram(name: "fn1", linkageName: "_Z3fn1v", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 16, file: !5, scope: !23, type: !24, function: i32 ()* @_Z3fn1v, variables: !26)
|
|
!23 = !MDFile(filename: "incorrect-variable-debug-loc.cpp", directory: "/tmp/dbginfo")
|
|
!24 = !MDSubroutineType(types: !25)
|
|
!25 = !{!8}
|
|
!26 = !{!27}
|
|
!27 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "A", line: 17, scope: !22, file: !23, type: !"_ZTS1C")
|
|
!28 = !MDSubprogram(name: "m_fn3", linkageName: "_ZN1C5m_fn3Ev", line: 21, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 21, file: !5, scope: !"_ZTS1C", type: !11, function: void (%struct.C*)* @_ZN1C5m_fn3Ev, declaration: !10, variables: !29)
|
|
!29 = !{!30}
|
|
!30 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !28, type: !31)
|
|
!31 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS1C")
|
|
!32 = !MDSubprogram(name: "m_fn2", linkageName: "_ZN1B5m_fn2Ev", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 6, file: !5, scope: !"_ZTS1B", type: !18, declaration: !17, variables: !33)
|
|
!33 = !{!34}
|
|
!34 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !32, type: !35)
|
|
!35 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS1B")
|
|
!36 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!37 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!38 = !{!"clang version 3.5.0 "}
|
|
!39 = !MDLocation(line: 6, scope: !32, inlinedAt: !40)
|
|
!40 = !MDLocation(line: 18, scope: !22)
|
|
!41 = !{!42, !43, i64 0}
|
|
!42 = !{!"_ZTS1B", !43, i64 0}
|
|
!43 = !{!"int", !44, i64 0}
|
|
!44 = !{!"omnipotent char", !45, i64 0}
|
|
!45 = !{!"Simple C/C++ TBAA"}
|
|
!46 = !MDLocation(line: 17, scope: !22)
|
|
!47 = !MDLocation(line: 19, scope: !22)
|
|
!48 = !MDLocation(line: 0, scope: !28)
|
|
!49 = !MDLocation(line: 22, scope: !28)
|
|
!50 = !MDLocation(line: 6, scope: !32, inlinedAt: !51)
|
|
!51 = !MDLocation(line: 23, scope: !28)
|
|
!52 = !MDLocation(line: 24, scope: !28)
|