add some -stats output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122682 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/LoopIdiomRecognize.cpp b/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
index 97f9ef2..a2f7b58 100644
--- a/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
+++ b/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
@@ -25,10 +25,13 @@
#include "llvm/Support/Debug.h"
#include "llvm/Support/IRBuilder.h"
#include "llvm/Support/raw_ostream.h"
+#include "llvm/ADT/Statistic.h"
using namespace llvm;
// TODO: Recognize "N" size array multiplies: replace with call to blas or
// something.
+STATISTIC(NumMemSet, "Number of memset's formed from loop stores");
+STATISTIC(NumMemCpy, "Number of memcpy's formed from loop load+stores");
namespace {
class LoopIdiomRecognize : public LoopPass {
@@ -123,6 +126,10 @@
bool LoopIdiomRecognize::runOnLoop(Loop *L, LPPassManager &LPM) {
CurLoop = L;
+ if (L->getHeader()->getName().startswith("bb29")) {
+ errs() << *L->getHeader();
+ }
+
// We only look at trivial single basic block loops.
// TODO: eventually support more complex loops, scanning the header.
if (L->getBlocks().size() != 1)
@@ -210,7 +217,7 @@
if (processLoopStoreOfLoopLoad(SI, StoreSize, StoreEv, LoadEv, BECount))
return true;
}
- // errs() << "UNHANDLED strided store: " << *Ev << " - " << *SI << "\n";
+ //errs() << "UNHANDLED strided store: " << *StoreEv << " - " << *SI << "\n";
return false;
}
@@ -309,6 +316,7 @@
// Okay, the memset has been formed. Zap the original store and anything that
// feeds into it.
DeleteDeadInstruction(SI, *SE);
+ ++NumMemSet;
return true;
}
@@ -379,5 +387,6 @@
// Okay, the memset has been formed. Zap the original store and anything that
// feeds into it.
DeleteDeadInstruction(SI, *SE);
+ ++NumMemCpy;
return true;
}