mirror of
https://github.com/c64scene-ar/llvm-6502.git
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b0d0a65e1d
Check that the `MDLocalVariable::getInlinedAt()` in a debug info
intrinsic's variable always matches the `MDLocation::getInlinedAt()` of
its `!dbg` attachment.
The goal here is to get rid of `MDLocalVariable::getInlinedAt()`
entirely (PR22778), since it's expensive and unnecessary, but I'll let
this verifier check bake for a while (a week maybe?) first. I've
updated the testcases that had the wrong value for `inlinedAt:`.
This checks that things are sane in the IR, but currently things go out
of whack in a few places in the backend. I'll follow shortly with
assertions in the backend (with code fixes).
If you have out-of-tree testcases that just started failing, here's how
I updated these ones:
1. The verifier check gives you the basic block, function, instruction,
and relevant metadata arguments (metadata numbering doesn't
necessarily match the source file, unfortunately).
2. Look at the `@llvm.dbg.*()` instruction, and compare the
`inlinedAt:` fields of the variable argument (second `metadata`
argument) and the `!dbg` attachment.
3. Figure out based on the variable `scope:` chain and the functions in
the file whether the variable has been inlined (and into what), so
you can determine which `inlinedAt:` is actually correct. In all of
the in-tree testcases, the `!MDLocation()` was correct and the
`!MDLocalVariable()` was wrong, but YMMV.
4. Duplicate the metadata that you're going to change, and add/drop the
`inlinedAt:` field from one of them. Be careful that the other
references to the same metadata node point at the correct one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234021 91177308-0d34-0410-b5e6-96231b3b80d8
95 lines
6.5 KiB
LLVM
95 lines
6.5 KiB
LLVM
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;RUN: llc < %s -o /dev/null
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;Radar 7937109
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%struct.anon = type { i64, i32, i32, i32, [1 x i32] }
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%struct.gpm_t = type { i32, i8*, [16 x i8], i32, i64, i64, i64, i64, i64, i64, i32, i16, i16, [8 x %struct.gpmr_t] }
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%struct.gpmr_t = type { [48 x i8], [48 x i8], [16 x i8], i64, i64, i64, i64, i16 }
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%struct.gpt_t = type { [8 x i8], i32, i32, i32, i32, i64, i64, i64, i64, [16 x i8], %struct.anon }
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@llvm.used = appending global [1 x i8*] [i8* bitcast (void (%struct.gpm_t*, %struct.gpt_t*)* @gpt2gpm to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0]
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define fastcc void @gpt2gpm(%struct.gpm_t* %gpm, %struct.gpt_t* %gpt) nounwind optsize ssp {
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entry:
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%data_addr.i18 = alloca i64, align 8 ; <i64*> [#uses=1]
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%data_addr.i17 = alloca i64, align 8 ; <i64*> [#uses=2]
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%data_addr.i16 = alloca i64, align 8 ; <i64*> [#uses=0]
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%data_addr.i15 = alloca i32, align 4 ; <i32*> [#uses=0]
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%data_addr.i = alloca i64, align 8 ; <i64*> [#uses=0]
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%0 = getelementptr inbounds %struct.gpm_t, %struct.gpm_t* %gpm, i32 0, i32 2, i32 0 ; <i8*> [#uses=1]
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%1 = getelementptr inbounds %struct.gpt_t, %struct.gpt_t* %gpt, i32 0, i32 9, i32 0 ; <i8*> [#uses=1]
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call void @uuid_LtoB(i8* %0, i8* %1) nounwind, !dbg !0
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%a9 = load volatile i64, i64* %data_addr.i18, align 8 ; <i64> [#uses=1]
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%a10 = call i64 @llvm.bswap.i64(i64 %a9) nounwind ; <i64> [#uses=1]
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%a11 = getelementptr inbounds %struct.gpt_t, %struct.gpt_t* %gpt, i32 0, i32 8, !dbg !7 ; <i64*> [#uses=1]
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%a12 = load i64, i64* %a11, align 4, !dbg !7 ; <i64> [#uses=1]
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call void @llvm.dbg.declare(metadata i64* %data_addr.i17, metadata !8, metadata !MDExpression()) nounwind, !dbg !14
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store i64 %a12, i64* %data_addr.i17, align 8
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call void @llvm.dbg.value(metadata !6, i64 0, metadata !15, metadata !MDExpression()) nounwind
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call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !19, metadata !MDExpression()) nounwind
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call void @llvm.dbg.declare(metadata !6, metadata !23, metadata !MDExpression()) nounwind
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call void @llvm.dbg.value(metadata i64* %data_addr.i17, i64 0, metadata !34, metadata !MDExpression()) nounwind
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%a13 = load volatile i64, i64* %data_addr.i17, align 8 ; <i64> [#uses=1]
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%a14 = call i64 @llvm.bswap.i64(i64 %a13) nounwind ; <i64> [#uses=2]
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%a15 = add i64 %a10, %a14, !dbg !7 ; <i64> [#uses=1]
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%a16 = sub i64 %a15, %a14 ; <i64> [#uses=1]
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%a17 = getelementptr inbounds %struct.gpm_t, %struct.gpm_t* %gpm, i32 0, i32 5, !dbg !7 ; <i64*> [#uses=1]
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store i64 %a16, i64* %a17, align 4, !dbg !7
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ret void, !dbg !7
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
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declare i32 @llvm.bswap.i32(i32) nounwind readnone
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declare i64 @llvm.bswap.i64(i64) nounwind readnone
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declare void @uuid_LtoB(i8*, i8*)
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!llvm.dbg.cu = !{!4}
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!llvm.module.flags = !{!41}
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!0 = !MDLocation(line: 808, scope: !1)
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!1 = distinct !MDLexicalBlock(line: 807, column: 0, file: !39, scope: !2)
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!2 = !MDSubprogram(name: "gpt2gpm", linkageName: "gpt2gpm", line: 807, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !39, scope: null, type: !5)
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!3 = !MDFile(filename: "G.c", directory: "/tmp")
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!4 = !MDCompileUnit(language: DW_LANG_C89, producer: "llvm-gcc", isOptimized: true, emissionKind: 0, file: !39, enums: !18, retainedTypes: !18, subprograms: !40)
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!5 = !MDSubroutineType(types: !6)
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!6 = !{null}
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!7 = !MDLocation(line: 810, scope: !1)
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!8 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "data", line: 201, arg: 0, scope: !9, file: !10, type: !11, inlinedAt: !7)
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!9 = !MDSubprogram(name: "_OSSwapInt64", linkageName: "_OSSwapInt64", line: 202, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !10, scope: null, type: !5)
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!10 = !MDFile(filename: "OSByteOrder.h", directory: "/usr/include/libkern/ppc")
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!11 = !MDDerivedType(tag: DW_TAG_typedef, name: "uint64_t", line: 59, file: !36, scope: !3, baseType: !13)
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!12 = !MDFile(filename: "stdint.h", directory: "/usr/4.2.1/include")
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!13 = !MDBasicType(tag: DW_TAG_base_type, name: "long long unsigned int", size: 64, align: 64, encoding: DW_ATE_unsigned)
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!14 = !MDLocation(line: 202, scope: !9, inlinedAt: !7)
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!15 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "base", line: 92, arg: 0, scope: !16, file: !10, type: !17)
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!16 = !MDSubprogram(name: "OSReadSwapInt64", linkageName: "OSReadSwapInt64", line: 95, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !38, scope: null, type: !5)
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!17 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !39, scope: !3, baseType: null)
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!18 = !{}
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!19 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "byteOffset", line: 94, arg: 0, scope: !16, file: !10, type: !20)
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!20 = !MDDerivedType(tag: DW_TAG_typedef, name: "uintptr_t", line: 114, file: !37, scope: !3, baseType: !22)
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!21 = !MDFile(filename: "types.h", directory: "/usr/include/ppc")
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!22 = !MDBasicType(tag: DW_TAG_base_type, name: "long unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
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!23 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "u", line: 100, scope: !24, file: !10, type: !25)
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!24 = distinct !MDLexicalBlock(line: 95, column: 0, file: !38, scope: !16)
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!25 = !MDCompositeType(tag: DW_TAG_union_type, line: 97, size: 64, align: 64, file: !38, scope: !16, elements: !26)
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!26 = !{!27, !28}
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!27 = !MDDerivedType(tag: DW_TAG_member, name: "u64", line: 98, size: 64, align: 64, file: !38, scope: !25, baseType: !11)
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!28 = !MDDerivedType(tag: DW_TAG_member, name: "u32", line: 99, size: 64, align: 32, file: !38, scope: !25, baseType: !29)
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!29 = !MDCompositeType(tag: DW_TAG_array_type, size: 64, align: 32, file: !39, scope: !3, baseType: !30, elements: !32)
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!30 = !MDDerivedType(tag: DW_TAG_typedef, name: "uint32_t", line: 55, file: !36, scope: !3, baseType: !31)
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!31 = !MDBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned)
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!32 = !{!33}
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!33 = !MDSubrange(count: 2)
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!34 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "addr", line: 96, scope: !24, file: !10, type: !35)
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!35 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, file: !39, scope: !3, baseType: !11)
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!36 = !MDFile(filename: "stdint.h", directory: "/usr/4.2.1/include")
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!37 = !MDFile(filename: "types.h", directory: "/usr/include/ppc")
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!38 = !MDFile(filename: "OSByteOrder.h", directory: "/usr/include/libkern/ppc")
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!39 = !MDFile(filename: "G.c", directory: "/tmp")
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!40 = !{!2, !9, !16}
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!41 = !{i32 1, !"Debug Info Version", i32 3}
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