mirror of
https://github.com/c64scene-ar/llvm-6502.git
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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
179 lines
6.9 KiB
LLVM
179 lines
6.9 KiB
LLVM
; RUN: llc -filetype=obj -O0 < %s
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; Test that we handle DBG_VALUEs in a register without crashing.
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;
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; Generated from clang with -fsanitize=address:
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; struct A {
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; A();
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; A(const A&);
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; };
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;
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; A func(int) {
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; A a;
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; return a;
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; }
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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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%struct.A = type { i8 }
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@__asan_mapping_offset = linkonce_odr constant i64 2147450880
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@__asan_mapping_scale = linkonce_odr constant i64 3
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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_gen_ = private unnamed_addr constant [16 x i8] c"1 32 4 5 .addr \00", align 1
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; Function Attrs: sanitize_address uwtable
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define void @_Z4funci(%struct.A* noalias sret %agg.result, i32) #0 "stack-protector-buffer-size"="1" {
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entry:
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%MyAlloca = alloca [96 x i8], align 32
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%1 = ptrtoint [96 x i8]* %MyAlloca to i64
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%2 = add i64 %1, 32
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%3 = inttoptr i64 %2 to i32*
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%4 = inttoptr i64 %1 to i64*
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store i64 1102416563, i64* %4
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%5 = add i64 %1, 8
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%6 = inttoptr i64 %5 to i64*
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store i64 ptrtoint ([16 x i8]* @__asan_gen_ to i64), i64* %6
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%7 = add i64 %1, 16
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%8 = inttoptr i64 %7 to i64*
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store i64 ptrtoint (void (%struct.A*, i32)* @_Z4funci to i64), i64* %8
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%9 = lshr i64 %1, 3
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%10 = add i64 %9, 2147450880
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%11 = inttoptr i64 %10 to i32*
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store i32 -235802127, i32* %11
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%12 = add i64 %10, 4
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%13 = inttoptr i64 %12 to i32*
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store i32 -185273340, i32* %13
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%14 = add i64 %10, 8
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%15 = inttoptr i64 %14 to i32*
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store i32 -202116109, i32* %15
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%16 = ptrtoint i32* %3 to i64
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%17 = lshr i64 %16, 3
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%18 = add i64 %17, 2147450880
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%19 = inttoptr i64 %18 to i8*
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%20 = load i8, i8* %19
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%21 = icmp ne i8 %20, 0
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call void @llvm.dbg.declare(metadata i32* %3, metadata !23, metadata !28)
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br i1 %21, label %22, label %28
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; <label>:22 ; preds = %entry
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%23 = and i64 %16, 7
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%24 = add i64 %23, 3
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%25 = trunc i64 %24 to i8
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%26 = icmp sge i8 %25, %20
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br i1 %26, label %27, label %28
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; <label>:27 ; preds = %22
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call void @__asan_report_store4(i64 %16)
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call void asm sideeffect "", ""()
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unreachable
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; <label>:28 ; preds = %22, %entry
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store i32 %0, i32* %3, align 4
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call void @llvm.dbg.declare(metadata %struct.A* %agg.result, metadata !24, metadata !MDExpression(DW_OP_deref)), !dbg !25
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call void @_ZN1AC1Ev(%struct.A* %agg.result), !dbg !25
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store i64 1172321806, i64* %4, !dbg !26
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%29 = inttoptr i64 %10 to i32*, !dbg !26
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store i32 0, i32* %29, !dbg !26
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%30 = add i64 %10, 4, !dbg !26
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%31 = inttoptr i64 %30 to i32*, !dbg !26
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store i32 0, i32* %31, !dbg !26
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%32 = add i64 %10, 8, !dbg !26
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%33 = inttoptr i64 %32 to i32*, !dbg !26
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store i32 0, i32* %33, !dbg !26
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ret void, !dbg !26
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare void @_ZN1AC1Ev(%struct.A*) #2
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define internal void @asan.module_ctor() "stack-protector-buffer-size"="1" {
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call void @__asan_init_v3()
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%1 = load volatile i64, i64* @__asan_mapping_offset
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%2 = load volatile i64, i64* @__asan_mapping_scale
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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_report_load2(i64)
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declare void @__asan_report_load4(i64)
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declare void @__asan_report_load8(i64)
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declare void @__asan_report_load16(i64)
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declare void @__asan_report_store1(i64)
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declare void @__asan_report_store2(i64)
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declare void @__asan_report_store4(i64)
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declare void @__asan_report_store8(i64)
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declare void @__asan_report_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_handle_no_return()
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declare i64 @__asan_stack_malloc(i64, i64)
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declare void @__asan_stack_free(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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attributes #0 = { sanitize_address uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "ssp-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "ssp-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!22, !27}
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!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
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!1 = !MDFile(filename: "crash.cpp", directory: "/tmp")
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!2 = !{}
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!3 = !{!4}
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!4 = !MDSubprogram(name: "func", linkageName: "_Z4funci", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 6, file: !1, scope: !5, type: !6, function: void (%struct.A*, i32)* @_Z4funci, variables: !2)
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!5 = !MDFile(filename: "crash.cpp", directory: "/tmp")
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!6 = !MDSubroutineType(types: !7)
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!7 = !{!8, !21}
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!8 = !MDCompositeType(tag: DW_TAG_structure_type, name: "A", line: 1, size: 8, align: 8, file: !1, elements: !9)
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!9 = !{!10, !15}
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!10 = !MDSubprogram(name: "A", line: 2, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !1, scope: !8, type: !11, variables: !14)
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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: !8)
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!14 = !{i32 786468}
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!15 = !MDSubprogram(name: "A", line: 3, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !8, type: !16, variables: !20)
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!16 = !MDSubroutineType(types: !17)
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!17 = !{null, !13, !18}
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!18 = !MDDerivedType(tag: DW_TAG_reference_type, baseType: !19)
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!19 = !MDDerivedType(tag: DW_TAG_const_type, baseType: !8)
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!20 = !{i32 786468}
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!21 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!22 = !{i32 2, !"Dwarf Version", i32 3}
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!23 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "", line: 6, arg: 1, scope: !4, file: !5, type: !21)
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!24 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "a", line: 7, scope: !4, file: !5, type: !8)
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!25 = !MDLocation(line: 7, scope: !4)
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!26 = !MDLocation(line: 8, scope: !4)
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!27 = !{i32 1, !"Debug Info Version", i32 3}
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!28 = !MDExpression(DW_OP_deref)
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