[llvm-commits] CVS: llvm/lib/Transforms/Scalar/SCCP.cpp

[Chris Lattner]

Changes in directory llvm/lib/Transforms/Scalar:

SCCP.cpp updated: 1.108 -> 1.109
---
Log message:

Count more accurately


---
Diffs of the changes:  (+4 -0)

Index: llvm/lib/Transforms/Scalar/SCCP.cpp
diff -u llvm/lib/Transforms/Scalar/SCCP.cpp:1.108 llvm/lib/Transforms/Scalar/SCCP.cpp:1.109
--- llvm/lib/Transforms/Scalar/SCCP.cpp:1.108	Sun Nov 14 23:45:33 2004
+++ llvm/lib/Transforms/Scalar/SCCP.cpp	Mon Nov 15 01:02:42 2004
@@ -44,6 +44,7 @@
 //
 namespace {
   Statistic<> NumInstRemoved("sccp", "Number of instructions removed");
+  Statistic<> NumDeadBlocks ("sccp", "Number of basic blocks unreachable");
 
 class LatticeVal {
   enum { 
@@ -853,6 +854,8 @@
   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 @@
           I->replaceAllUsesWith(UndefValue::get(I->getType()));
         BB->getInstList().erase(I);
         MadeChanges = true;
+        ++NumInstRemoved;
       }
     }