[llvm-commits] [llvm] r122703 - /llvm/trunk/lib/Transforms/Scalar/LICM.cpp

[Chris Lattner]

Author: lattner
Date: Sun Jan  2 12:53:08 2011
New Revision: 122703

URL: http://llvm.org/viewvc/llvm-project?rev=122703&view=rev
Log:
make inSubLoop much more efficient.

Modified:
    llvm/trunk/lib/Transforms/Scalar/LICM.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/LICM.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/LICM.cpp?rev=122703&r1=122702&r2=122703&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/LICM.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/LICM.cpp Sun Jan  2 12:53:08 2011
@@ -131,10 +131,7 @@
     ///
     bool inSubLoop(BasicBlock *BB) {
       assert(CurLoop->contains(BB) && "Only valid if BB is IN the loop");
-      for (Loop::iterator I = CurLoop->begin(), E = CurLoop->end(); I != E; ++I)
-        if ((*I)->contains(BB))
-          return true;  // A subloop actually contains this block!
-      return false;
+      return LI->getLoopFor(BB) != CurLoop;
     }
 
     /// sink - When an instruction is found to only be used outside of the loop,