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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
112 lines
5.3 KiB
LLVM
112 lines
5.3 KiB
LLVM
; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s -filetype=obj \
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; RUN: | llvm-dwarfdump -debug-dump=info - \
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; RUN: | FileCheck %s -check-prefix=CHECK -check-prefix=DWARF4
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; RUN: llc -O0 -mtriple=x86_64-apple-darwin < %s -filetype=obj -dwarf-version=3 \
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; RUN: | llvm-dwarfdump -debug-dump=info - \
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; RUN: | FileCheck %s -check-prefix=CHECK -check-prefix=DWARF3
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; FIXME: The location here needs to be fixed, but llvm-dwarfdump doesn't handle
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; DW_AT_location lists yet.
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; DWARF4: DW_AT_location [DW_FORM_sec_offset] (0x00000000)
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; FIXME: The location here needs to be fixed, but llvm-dwarfdump doesn't handle
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; DW_AT_location lists yet.
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; DWARF3: DW_AT_location [DW_FORM_data4] (0x00000000)
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000067] = "vla")
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; Unfortunately llvm-dwarfdump can't unparse a list of DW_AT_locations
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; right now, so we check the asm output:
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; RUN: llc -O0 -mtriple=x86_64-apple-darwin %s -o - -filetype=asm | FileCheck %s -check-prefix=ASM-CHECK
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; vla should have a register-indirect address at one point.
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; ASM-CHECK: DEBUG_VALUE: vla <- RCX
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; ASM-CHECK: DW_OP_breg2
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; RUN: llvm-as %s -o - | llvm-dis - | FileCheck %s --check-prefix=PRETTY-PRINT
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; PRETTY-PRINT: MDExpression(DW_OP_deref, DW_OP_deref)
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define void @testVLAwithSize(i32 %s) nounwind uwtable ssp {
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entry:
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%s.addr = alloca i32, align 4
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%saved_stack = alloca i8*
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%i = alloca i32, align 4
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store i32 %s, i32* %s.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %s.addr, metadata !10, metadata !MDExpression()), !dbg !11
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%0 = load i32, i32* %s.addr, align 4, !dbg !12
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%1 = zext i32 %0 to i64, !dbg !12
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%2 = call i8* @llvm.stacksave(), !dbg !12
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store i8* %2, i8** %saved_stack, !dbg !12
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%vla = alloca i32, i64 %1, align 16, !dbg !12
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call void @llvm.dbg.declare(metadata i32* %vla, metadata !14, metadata !30), !dbg !18
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call void @llvm.dbg.declare(metadata i32* %i, metadata !19, metadata !MDExpression()), !dbg !20
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store i32 0, i32* %i, align 4, !dbg !21
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br label %for.cond, !dbg !21
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for.cond: ; preds = %for.inc, %entry
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%3 = load i32, i32* %i, align 4, !dbg !21
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%4 = load i32, i32* %s.addr, align 4, !dbg !21
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%cmp = icmp slt i32 %3, %4, !dbg !21
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br i1 %cmp, label %for.body, label %for.end, !dbg !21
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for.body: ; preds = %for.cond
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%5 = load i32, i32* %i, align 4, !dbg !23
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%6 = load i32, i32* %i, align 4, !dbg !23
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%mul = mul nsw i32 %5, %6, !dbg !23
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%7 = load i32, i32* %i, align 4, !dbg !23
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%idxprom = sext i32 %7 to i64, !dbg !23
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%arrayidx = getelementptr inbounds i32, i32* %vla, i64 %idxprom, !dbg !23
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store i32 %mul, i32* %arrayidx, align 4, !dbg !23
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br label %for.inc, !dbg !25
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for.inc: ; preds = %for.body
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%8 = load i32, i32* %i, align 4, !dbg !26
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%inc = add nsw i32 %8, 1, !dbg !26
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store i32 %inc, i32* %i, align 4, !dbg !26
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br label %for.cond, !dbg !26
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for.end: ; preds = %for.cond
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%9 = load i8*, i8** %saved_stack, !dbg !27
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call void @llvm.stackrestore(i8* %9), !dbg !27
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ret void, !dbg !27
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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declare i8* @llvm.stacksave() nounwind
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declare void @llvm.stackrestore(i8*) nounwind
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!29}
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!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.2 (trunk 156005) (llvm/trunk 156000)", isOptimized: false, emissionKind: 1, file: !28, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports: !1)
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!1 = !{}
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!3 = !{!5}
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!5 = !MDSubprogram(name: "testVLAwithSize", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !28, scope: !6, type: !7, function: void (i32)* @testVLAwithSize, variables: !1)
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!6 = !MDFile(filename: "bar.c", directory: "/Users/echristo/tmp")
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!7 = !MDSubroutineType(types: !8)
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!8 = !{null, !9}
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!9 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "s", line: 1, arg: 1, scope: !5, file: !6, type: !9)
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!11 = !MDLocation(line: 1, column: 26, scope: !5)
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!12 = !MDLocation(line: 3, column: 13, scope: !13)
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!13 = distinct !MDLexicalBlock(line: 2, column: 1, file: !28, scope: !5)
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!14 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "vla", line: 3, scope: !13, file: !6, type: !15)
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!15 = !MDCompositeType(tag: DW_TAG_array_type, align: 32, baseType: !9, elements: !16)
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!16 = !{!17}
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!17 = !MDSubrange(count: -1)
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!18 = !MDLocation(line: 3, column: 7, scope: !13)
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!19 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i", line: 4, scope: !13, file: !6, type: !9)
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!20 = !MDLocation(line: 4, column: 7, scope: !13)
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!21 = !MDLocation(line: 5, column: 8, scope: !22)
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!22 = distinct !MDLexicalBlock(line: 5, column: 3, file: !28, scope: !13)
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!23 = !MDLocation(line: 6, column: 5, scope: !24)
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!24 = distinct !MDLexicalBlock(line: 5, column: 27, file: !28, scope: !22)
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!25 = !MDLocation(line: 7, column: 3, scope: !24)
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!26 = !MDLocation(line: 5, column: 22, scope: !22)
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!27 = !MDLocation(line: 8, column: 1, scope: !13)
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!28 = !MDFile(filename: "bar.c", directory: "/Users/echristo/tmp")
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!29 = !{i32 1, !"Debug Info Version", i32 3}
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!30 = !MDExpression(DW_OP_deref, DW_OP_deref)
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