[llvm-commits] [llvm-gcc-4.2] r63023 - /llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp

[Evan Cheng]

Author: evancheng
Date: Mon Jan 26 12:55:10 2009
New Revision: 63023

URL: http://llvm.org/viewvc/llvm-project?rev=63023&view=rev
Log:
Do not run aggressive loop unswitch at -O2.

Modified:
    llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp

Modified: llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp?rev=63023&r1=63022&r2=63023&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp (original)
+++ llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp Mon Jan 26 12:55:10 2009
@@ -438,7 +438,7 @@
     PM->add(createReassociatePass());           // Reassociate expressions
     PM->add(createLoopRotatePass());            // Rotate Loop
     PM->add(createLICMPass());                  // Hoist loop invariants
-    PM->add(createLoopUnswitchPass(optimize_size ? true : false));
+    PM->add(createLoopUnswitchPass(optimize_size || optimize < 3));
     PM->add(createLoopIndexSplitPass());        // Split loop index
     PM->add(createInstructionCombiningPass());  
     PM->add(createIndVarSimplifyPass());        // Canonicalize indvars