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Add a debug info code generation level to the compile unit metadata

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and update everything accordingly. This can be used to conditionalize
the amount of output in the backend based on the amount of debug
requested/metadata emission scheme by a front end (e.g. clang).

Paired with a commit to clang.

llvm-svn: 202332
This commit is contained in:
Eric Christopher 2014-02-27 01:24:56 +00:00
parent f69fffe6b2
commit b69957cb27
7 changed files with 13 additions and 7 deletions
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4
include/llvm/DIBuilder.h
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@ -87,6 +87,7 @@ namespace llvm {
public:
explicit DIBuilder(Module &M);
enum ComplexAddrKind { OpPlus=1, OpDeref };
enum DebugEmissionKind { FullDebug=1, LineTablesOnly };
/// finalize - Construct any deferred debug info descriptors.
void finalize();
@ -111,7 +112,8 @@ namespace llvm {
StringRef Dir, StringRef Producer,
bool isOptimized, StringRef Flags,
unsigned RV,
StringRef SplitName = StringRef());
StringRef SplitName = StringRef(),
DebugEmissionKind Kind = FullDebug);
/// createFile - Create a file descriptor to hold debugging information
/// for a file.

1
include/llvm/DebugInfo.h
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@ -427,6 +427,7 @@ public:
DIArray getImportedEntities() const;
StringRef getSplitDebugFilename() const { return getStringField(12); }
unsigned getEmissionKind() const { return getUnsignedField(13); }
/// Verify - Verify that a compile unit is well formed.
bool Verify() const;

7
lib/IR/DIBuilder.cpp
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@ -97,7 +97,9 @@ DICompileUnit DIBuilder::createCompileUnit(unsigned Lang, StringRef Filename,
StringRef Directory,
StringRef Producer, bool isOptimized,
StringRef Flags, unsigned RunTimeVer,
StringRef SplitName) {
StringRef SplitName,
DebugEmissionKind Kind) {
assert(((Lang <= dwarf::DW_LANG_Python && Lang >= dwarf::DW_LANG_C89) ||
(Lang <= dwarf::DW_LANG_hi_user && Lang >= dwarf::DW_LANG_lo_user)) &&
"Invalid Language tag");
@ -127,7 +129,8 @@ DICompileUnit DIBuilder::createCompileUnit(unsigned Lang, StringRef Filename,
TempSubprograms,
TempGVs,
TempImportedModules,
MDString::get(VMContext, SplitName)
MDString::get(VMContext, SplitName),
ConstantInt::get(Type::getInt32Ty(VMContext), Kind)
};
MDNode *CUNode = MDNode::get(VMContext, Elts);

2
lib/IR/DebugInfo.cpp
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@ -382,7 +382,7 @@ bool DICompileUnit::Verify() const {
if (getFilename().empty())
return false;
return DbgNode->getNumOperands() == 13;
return DbgNode->getNumOperands() == 14;
}
/// Verify - Verify that an ObjC property is well formed.

2
test/DebugInfo/2010-03-19-DbgDeclare.ll
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@ -9,7 +9,7 @@ entry:
}
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!5}
!2 = metadata !{i32 786449, metadata !4, i32 32769, metadata !"clang version 3.3 ", i1 false, metadata !"", i32 0, metadata !3, metadata !3, metadata !3, metadata !3, metadata !3, metadata !""} ; [ DW_TAG_compile_unit ] [/usr/local/google/home/blaikie/dev/scratch/scratch.cpp] [lang 0x8001]
!2 = metadata !{i32 786449, metadata !4, i32 32769, metadata !"clang version 3.3 ", i1 false, metadata !"", i32 0, metadata !3, metadata !3, metadata !3, metadata !3, metadata !3, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/usr/local/google/home/blaikie/dev/scratch/scratch.cpp] [lang 0x8001]
!3 = metadata !{}
!0 = metadata !{i32 662302, i32 26, metadata !1, null}
!1 = metadata !{i32 4, metadata !"foo"}

2
test/Transforms/StripSymbols/2010-08-25-crash.ll
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@ -9,7 +9,7 @@ entry:
!0 = metadata !{i32 524334, metadata !10, metadata !1, metadata !"foo", metadata !"foo", metadata !"foo", i32 3, metadata !3, i1 false, i1 true, i32 0, i32 0, null, i1 false, i1 false, i32 ()* @foo, null, null, null, i32 0} ; [ DW_TAG_subprogram ]
!1 = metadata !{i32 524329, metadata !10} ; [ DW_TAG_file_type ]
!2 = metadata !{i32 524305, metadata !10, i32 12, metadata !"clang version 2.8 (trunk 112062)", i1 true, metadata !"", i32 0, metadata !11, metadata !11, metadata !12, metadata !13, null, metadata !""} ; [ DW_TAG_compile_unit ]
!2 = metadata !{i32 524305, metadata !10, i32 12, metadata !"clang version 2.8 (trunk 112062)", i1 true, metadata !"", i32 0, metadata !11, metadata !11, metadata !12, metadata !13, null, metadata !"", i32 1} ; [ DW_TAG_compile_unit ]
!3 = metadata !{i32 524309, metadata !10, metadata !1, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !4, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ]
!4 = metadata !{metadata !5}
!5 = metadata !{i32 524324, metadata !10, metadata !1, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]

2
test/Transforms/StripSymbols/strip-dead-debug-info.ll
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@ -30,7 +30,7 @@ attributes #2 = { nounwind readonly ssp }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!25}
!0 = metadata !{i32 524305, metadata !1, i32 1, metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !23, metadata !24, null, metadata !""} ; [ DW_TAG_compile_unit ] [/tmp//g.c] [DW_LANG_C89]
!0 = metadata !{i32 524305, metadata !1, i32 1, metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", i1 true, metadata !"", i32 0, metadata !2, metadata !2, metadata !23, metadata !24, null, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/tmp//g.c] [DW_LANG_C89]
!1 = metadata !{metadata !"g.c", metadata !"/tmp/"}
!2 = metadata !{null}
!3 = metadata !{i32 524334, metadata !1, null, metadata !"bar", metadata !"bar", metadata !"", i32 5, metadata !4, i1 true, i1 true, i32 0, i32 0, null, i1 false, i1 true, null, null, null, null, i32 0} ; [ DW_TAG_subprogram ] [line 5] [local] [def] [scope 0] [bar]