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Add special case bitcode support for DebugLoc. This avoids

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having the bitcode writer materialize mdnodes for all the
debug location tuples when writing out the bc file and 
stores the information in a more compact form.  For example,
the -O0 -g bc file for combine.c in 176.gcc shrinks from
739392 to 512096 bytes.

This concludes my planned short-term debug info work.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100261 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-04-03 02:17:50 +00:00
parent cbf1aa9e31
commit a6245247e9
5 changed files with 91 additions and 13 deletions
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9
lib/Bitcode/Writer/ValueEnumerator.cpp
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@ -104,9 +104,16 @@ ValueEnumerator::ValueEnumerator(const Module *M) {
// Enumerate metadata attached with this instruction.
MDs.clear();
I->getAllMetadata(MDs);
I->getAllMetadataOtherThanDebugLoc(MDs);
for (unsigned i = 0, e = MDs.size(); i != e; ++i)
EnumerateMetadata(MDs[i].second);
if (!I->getDebugLoc().isUnknown()) {
MDNode *Scope, *IA;
I->getDebugLoc().getScopeAndInlinedAt(Scope, IA, I->getContext());
if (Scope) EnumerateMetadata(Scope);
if (IA) EnumerateMetadata(IA);
}
}
}