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Revert 85678/85680. The decision is to stay with the current form of

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indirectbr, thus we don't need "blockaddr(@func, null)".  Eliminate it
for simplicity.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85699 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2009-11-01 01:27:45 +00:00
parent de17fb6e4d
commit cdfc940912
11 changed files with 25 additions and 47 deletions
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8
lib/VMCore/BasicBlock.cpp
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@@ -63,13 +63,15 @@ BasicBlock::~BasicBlock() {
// hanging off the block, or an undefined use of the block (source code
// expecting the address of a label to keep the block alive even though there
// is no indirect branch). Handle these cases by zapping the BlockAddress
// nodes, replacing them with BlockAddress(F, NULL). There are no other
// possible uses at this point.
// nodes. There are no other possible uses at this point.
if (hasAddressTaken()) {
assert(!use_empty() && "There should be at least one blockaddress!");
Constant *Replacement =
ConstantInt::get(llvm::Type::getInt32Ty(getContext()), 1);
while (!use_empty()) {
BlockAddress *BA = cast<BlockAddress>(use_back());
BA->replaceAllUsesWith(BlockAddress::get(BA->getFunction(), 0));
BA->replaceAllUsesWith(ConstantExpr::getIntToPtr(Replacement,
BA->getType()));
BA->destroyConstant();
}
}