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Do not let dead constant expressions hanging off of functions prevent IPCP.

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This allows to elimination of a bunch of global pool descriptor args from
programs being pool allocated (and is also generally useful!)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17657 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2004-11-09 20:47:30 +00:00
parent 8ee9da05ed
commit c890bfe1da
1 changed files with 3 additions and 0 deletions
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3
lib/Transforms/IPO/IPConstantPropagation.cpp
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@ -62,6 +62,9 @@ bool IPCP::runOnModule(Module &M) {
bool IPCP::processFunction(Function &F) { bool IPCP::processFunction(Function &F) {
if (F.aempty() || F.use_empty()) return false; // No arguments? Early exit. if (F.aempty() || F.use_empty()) return false; // No arguments? Early exit.
// Delete any klingons.
F.removeDeadConstantUsers();
std::vector<std::pair<Constant*, bool> > ArgumentConstants; std::vector<std::pair<Constant*, bool> > ArgumentConstants;
ArgumentConstants.resize(F.asize()); ArgumentConstants.resize(F.asize());