[llvm] r207186 - blockfreq: Unwrap from Loops

[Duncan P. N. Exon Smith]

Author: dexonsmith
Date: Thu Apr 24 23:38:20 2014
New Revision: 207186

URL: http://llvm.org/viewvc/llvm-project?rev=207186&view=rev
Log:
blockfreq: Unwrap from Loops

When unwrapping loops, just visit the loops rather than all nodes.

<rdar://problem/14292693>

Modified:
    llvm/trunk/lib/Analysis/BlockFrequencyInfoImpl.cpp

Modified: llvm/trunk/lib/Analysis/BlockFrequencyInfoImpl.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/BlockFrequencyInfoImpl.cpp?rev=207186&r1=207185&r2=207186&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/BlockFrequencyInfoImpl.cpp (original)
+++ llvm/trunk/lib/Analysis/BlockFrequencyInfoImpl.cpp Thu Apr 24 23:38:20 2014
@@ -851,10 +851,8 @@ void BlockFrequencyInfoImplBase::unwrapL
   for (size_t Index = 0; Index < Working.size(); ++Index)
     Freqs[Index].Floating = Working[Index].Mass.toFloat();
 
-  for (size_t Index = 0; Index < Working.size(); ++Index) {
-    if (Working[Index].isLoopHeader())
-      unwrapLoopPackage(*this, BlockNode(Index));
-  }
+  for (const LoopData &L : Loops)
+    unwrapLoopPackage(*this, L.getHeader());
 }
 
 void BlockFrequencyInfoImplBase::finalizeMetrics() {