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Make blockaddress(@func, null) be valid, and make 'deleting a basic

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block with a blockaddress still referring to it' replace the invalid 
blockaddress with a new blockaddress(@func, null) instead of a 
inttoptr(1).

This changes the bitcode encoding format, and still needs codegen 
support (this should produce a non-zero value, referring to the entry
block of the function would also be quite reasonable).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85678 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-10-31 20:08:37 +00:00
parent e3246fc6ab
commit 7d83ebcadd
9 changed files with 39 additions and 21 deletions
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3
lib/Bitcode/Writer/BitcodeWriter.cpp
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@@ -854,7 +854,8 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
break;
}
} else if (const BlockAddress *BA = dyn_cast<BlockAddress>(C)) {
assert(BA->getFunction() == BA->getBasicBlock()->getParent() &&
assert((!BA->getBasicBlock() ||
BA->getFunction() == BA->getBasicBlock()->getParent()) &&
"Malformed blockaddress");
Code = bitc::CST_CODE_BLOCKADDRESS;
Record.push_back(VE.getTypeID(BA->getFunction()->getType()));