[polly] r218613 - Disable runtime alias checks when we ignore aliasing.

[Johannes Doerfert]

Author: jdoerfert
Date: Mon Sep 29 12:06:29 2014
New Revision: 218613

URL: http://llvm.org/viewvc/llvm-project?rev=218613&view=rev
Log:
Disable runtime alias checks when we ignore aliasing.

  This is just a optimization to save the compile time and execution time
  for runtime alias checks if the user guarantees no aliasing all together.

Modified:
    polly/trunk/lib/Analysis/ScopDetection.cpp

Modified: polly/trunk/lib/Analysis/ScopDetection.cpp
URL: http://llvm.org/viewvc/llvm-project/polly/trunk/lib/Analysis/ScopDetection.cpp?rev=218613&r1=218612&r2=218613&view=diff
==============================================================================
--- polly/trunk/lib/Analysis/ScopDetection.cpp (original)
+++ polly/trunk/lib/Analysis/ScopDetection.cpp Mon Sep 29 12:06:29 2014
@@ -196,6 +196,12 @@ ScopDetection::ScopDetection() : Functio
   if (!PollyUseRuntimeAliasChecks)
     return;
 
+  // Disable runtime alias checks if we ignore aliasing all together.
+  if (IgnoreAliasing) {
+    PollyUseRuntimeAliasChecks = false;
+    return;
+  }
+
   if (PollyDelinearize) {
     DEBUG(errs() << "WARNING: We disable runtime alias checks as "
                     "delinearization is enabled.\n");