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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
5.7 KiB
LLVM
112 lines
5.7 KiB
LLVM
; RUN: llc < %s -verify-machineinstrs
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; PR16110
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;
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; This test case contains a value that is split into two connected components
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; by rematerialization during coalescing. It also contains a DBG_VALUE
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; instruction which must be updated during
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; ConnectedVNInfoEqClasses::Distribute().
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target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
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target triple = "thumbv7-apple-ios3.0.0"
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@c = common global i32 0, align 4
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@b = common global i32 0, align 4
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@a = common global i64 0, align 8
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@d = common global i32 0, align 4
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; Function Attrs: nounwind ssp
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define i32 @pr16110() #0 {
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for.cond1.preheader:
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store i32 0, i32* @c, align 4, !dbg !21
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br label %for.cond1.outer, !dbg !26
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for.cond1: ; preds = %for.end9, %for.cond1.outer
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%storemerge11 = phi i32 [ 0, %for.end9 ], [ %storemerge11.ph, %for.cond1.outer ]
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%cmp = icmp slt i32 %storemerge11, 1, !dbg !26
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br i1 %cmp, label %for.body2, label %for.end9, !dbg !26
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for.body2: ; preds = %for.cond1
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store i32 %storemerge11, i32* @b, align 4, !dbg !26
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tail call void @llvm.dbg.value(metadata i32* null, i64 0, metadata !11, metadata !MDExpression()), !dbg !28
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%0 = load i64, i64* @a, align 8, !dbg !29
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%xor = xor i64 %0, %e.1.ph, !dbg !29
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%conv3 = trunc i64 %xor to i32, !dbg !29
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tail call void @llvm.dbg.value(metadata i32 %conv3, i64 0, metadata !10, metadata !MDExpression()), !dbg !29
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%tobool4 = icmp eq i32 %conv3, 0, !dbg !29
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br i1 %tobool4, label %land.end, label %land.rhs, !dbg !29
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land.rhs: ; preds = %for.body2
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%call = tail call i32 bitcast (i32 (...)* @fn3 to i32 ()*)() #3, !dbg !29
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%tobool5 = icmp ne i32 %call, 0, !dbg !29
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br label %land.end
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land.end: ; preds = %land.rhs, %for.body2
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%1 = phi i1 [ false, %for.body2 ], [ %tobool5, %land.rhs ]
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%land.ext = zext i1 %1 to i32
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%call6 = tail call i32 bitcast (i32 (...)* @fn2 to i32 (i32, i32*)*)(i32 %land.ext, i32* null) #3
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%2 = load i32, i32* @b, align 4, !dbg !26
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%inc8 = add nsw i32 %2, 1, !dbg !26
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%phitmp = and i64 %xor, 4294967295, !dbg !26
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br label %for.cond1.outer, !dbg !26
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for.cond1.outer: ; preds = %land.end, %for.cond1.preheader
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%storemerge11.ph = phi i32 [ %inc8, %land.end ], [ 0, %for.cond1.preheader ]
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%e.1.ph = phi i64 [ %phitmp, %land.end ], [ 0, %for.cond1.preheader ]
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%3 = load i32, i32* @d, align 4, !dbg !31
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%tobool10 = icmp eq i32 %3, 0, !dbg !31
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br label %for.cond1
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for.end9: ; preds = %for.cond1
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br i1 %tobool10, label %if.end, label %for.cond1, !dbg !31
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if.end: ; preds = %for.end9
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store i32 %storemerge11, i32* @b, align 4, !dbg !26
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ret i32 0, !dbg !32
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}
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declare i32 @fn2(...) #1
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declare i32 @fn3(...) #1
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
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attributes #0 = { nounwind ssp "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!33}
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!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 182024) (llvm/trunk 182023)", isOptimized: true, emissionKind: 0, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !15, imports: !2)
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!1 = !MDFile(filename: "pr16110.c", directory: "/d/b")
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!2 = !{}
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!3 = !{!4}
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!4 = !MDSubprogram(name: "pr16110", line: 7, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, scopeLine: 7, file: !1, scope: !5, type: !6, function: i32 ()* @pr16110, variables: !9)
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!5 = !MDFile(filename: "pr16110.c", directory: "/d/b")
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!6 = !MDSubroutineType(types: !7)
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!7 = !{!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 = !{!10, !11}
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!10 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "e", line: 8, scope: !4, file: !5, type: !8)
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!11 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "f", line: 13, scope: !12, file: !5, type: !14)
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!12 = distinct !MDLexicalBlock(line: 12, column: 0, file: !1, scope: !13)
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!13 = distinct !MDLexicalBlock(line: 12, column: 0, file: !1, scope: !4)
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!14 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 32, align: 32, baseType: !8)
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!15 = !{!16, !18, !19, !20}
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!16 = !MDGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !5, type: !17, variable: i64* @a)
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!17 = !MDBasicType(tag: DW_TAG_base_type, name: "long long int", size: 64, align: 32, encoding: DW_ATE_signed)
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!18 = !MDGlobalVariable(name: "b", line: 2, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8, variable: i32* @b)
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!19 = !MDGlobalVariable(name: "c", line: 3, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8, variable: i32* @c)
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!20 = !MDGlobalVariable(name: "d", line: 4, isLocal: false, isDefinition: true, scope: null, file: !5, type: !8, variable: i32* @d)
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!21 = !MDLocation(line: 10, scope: !22)
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!22 = distinct !MDLexicalBlock(line: 10, column: 0, file: !1, scope: !4)
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!26 = !MDLocation(line: 12, scope: !13)
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!27 = !{i32* null}
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!28 = !MDLocation(line: 13, scope: !12)
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!29 = !MDLocation(line: 14, scope: !12)
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!31 = !MDLocation(line: 16, scope: !4)
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!32 = !MDLocation(line: 18, scope: !4)
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!33 = !{i32 1, !"Debug Info Version", i32 3}
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