add DEBUG and -stats output to earlycse.
Teach it to CSE the rest of the non-side-effecting instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122716 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/LoopIdiomRecognize.cpp b/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
index 49368cb..086afb1 100644
--- a/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
+++ b/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
@@ -31,7 +31,10 @@
// void foo(_Complex float *P)
// for (i) { __real__(*P) = 0; __imag__(*P) = 0; }
// this is also "Example 2" from http://blog.regehr.org/archives/320
-//
+//
+// This could regognize common matrix multiplies and dot product idioms and
+// replace them with calls to BLAS (if linked in??).
+//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "loop-idiom"
@@ -49,8 +52,6 @@
#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");