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Discard metadata produced by LLVM 2.7. The value enumeration it used

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is different from what the code now uses in a two ways: NamedMDNodes
were considered Values and included in the numbering, and the
function-local metadata counter wasn't reset between functions.

The later problem breaks lazy deserialization, so instead of trying
to emulate the old numbering, just drop the old metadata. The only
in-tree use case is debug info with LTO, where the QOI loss is
considered acceptable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113557 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-09-09 23:12:39 +00:00
parent 1ab6f2fa7a
commit 70c2fc0823
4 changed files with 72 additions and 22 deletions
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6
tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
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@@ -236,6 +236,8 @@ static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
case bitc::FUNC_CODE_INST_VSELECT: return "INST_VSELECT";
case bitc::FUNC_CODE_DEBUG_LOC: return "DEBUG_LOC";
case bitc::FUNC_CODE_DEBUG_LOC_AGAIN: return "DEBUG_LOC_AGAIN";
case bitc::FUNC_CODE_INST_CALL2: return "INST_CALL2";
case bitc::FUNC_CODE_DEBUG_LOC2: return "DEBUG_LOC2";
}
case bitc::TYPE_SYMTAB_BLOCK_ID:
switch (CodeID) {
@@ -263,6 +265,10 @@ static const char *GetCodeName(unsigned CodeID, unsigned BlockID,
case bitc::METADATA_NAMED_NODE: return "METADATA_NAMED_NODE";
case bitc::METADATA_KIND: return "METADATA_KIND";
case bitc::METADATA_ATTACHMENT: return "METADATA_ATTACHMENT";
case bitc::METADATA_NODE2: return "METADATA_NODE2";
case bitc::METADATA_FN_NODE2: return "METADATA_FN_NODE2";
case bitc::METADATA_NAMED_NODE2: return "METADATA_NAMED_NODE2";
case bitc::METADATA_ATTACHMENT2: return "METADATA_ATTACHMENT2";
}
}
}