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Bitcode: Add METADATA_NODE and METADATA_VALUE

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This reflects the typelessness of `Metadata` in the bitcode format,
removing types from all metadata operands.

`METADATA_VALUE` represents a `ValueAsMetadata`, and always has two
fields: the type and the value.

`METADATA_NODE` represents an `MDNode`, and unlike `METADATA_OLD_NODE`,
doesn't store types.  It stores operands at their ID+1 so that `0` can
reference `nullptr` operands.

Part of PR21532.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224073 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2014-12-11 23:02:24 +00:00
parent f329765d23
commit e39dba9f07
7 changed files with 61 additions and 40 deletions
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2
tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
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@ -266,6 +266,8 @@ static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
case bitc::METADATA_STRING: return "METADATA_STRING";
case bitc::METADATA_NAME: return "METADATA_NAME";
case bitc::METADATA_KIND: return "METADATA_KIND";
case bitc::METADATA_NODE: return "METADATA_NODE";
case bitc::METADATA_VALUE: return "METADATA_VALUE";
case bitc::METADATA_OLD_NODE: return "METADATA_OLD_NODE";
case bitc::METADATA_OLD_FN_NODE: return "METADATA_OLD_FN_NODE";
case bitc::METADATA_NAMED_NODE: return "METADATA_NAMED_NODE";