[llvm-commits] [llvm] r113595 - /llvm/trunk/lib/Transforms/Scalar/LoopUnrollPass.cpp

[Owen Anderson]

Author: resistor
Date: Fri Sep 10 12:57:00 2010
New Revision: 113595

URL: http://llvm.org/viewvc/llvm-project?rev=113595&view=rev
Log:
Lower the unrolling theshold to 150.  Empirical tests indicate that this is a sweet spot in the performance per
code size increase curve.

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

Modified: llvm/trunk/lib/Transforms/Scalar/LoopUnrollPass.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/LoopUnrollPass.cpp?rev=113595&r1=113594&r2=113595&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/LoopUnrollPass.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/LoopUnrollPass.cpp Fri Sep 10 12:57:00 2010
@@ -27,7 +27,7 @@
 using namespace llvm;
 
 static cl::opt<unsigned>
-UnrollThreshold("unroll-threshold", cl::init(200), cl::Hidden,
+UnrollThreshold("unroll-threshold", cl::init(150), cl::Hidden,
   cl::desc("The cut-off point for automatic loop unrolling"));
 
 static cl::opt<unsigned>