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Count more accurately

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17824 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-11-15 07:02:42 +00:00
parent 766d6f3b59
commit b77d5d8d50
1 changed files with 4 additions and 0 deletions
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4
lib/Transforms/Scalar/SCCP.cpp
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@ -44,6 +44,7 @@ using namespace llvm;
//
namespace {
Statistic<> NumInstRemoved("sccp", "Number of instructions removed");
Statistic<> NumDeadBlocks ("sccp", "Number of basic blocks unreachable");
class LatticeVal {
enum {
@ -853,6 +854,8 @@ bool SCCP::runOnFunction(Function &F) {
for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
if (!ExecutableBBs.count(BB)) {
DEBUG(std::cerr << " BasicBlock Dead:" << *BB);
++NumDeadBlocks;
// Delete the instructions backwards, as it has a reduced likelihood of
// having to update as many def-use and use-def chains.
std::vector<Instruction*> Insts;
@ -866,6 +869,7 @@ bool SCCP::runOnFunction(Function &F) {
I->replaceAllUsesWith(UndefValue::get(I->getType()));
BB->getInstList().erase(I);
MadeChanges = true;
++NumInstRemoved;
}
}