[llvm] r200738 - RegAllocGreedy.cpp: Use more simple value as Hysteresis, to suppress -mfpmath-dependent behavior.

[NAKAMURA Takumi]

Author: chapuni
Date: Tue Feb  4 00:29:38 2014
New Revision: 200738

URL: http://llvm.org/viewvc/llvm-project?rev=200738&view=rev
Log:
RegAllocGreedy.cpp: Use more simple value as Hysteresis, to suppress -mfpmath-dependent behavior.

Modified:
    llvm/trunk/lib/CodeGen/RegAllocGreedy.cpp

Modified: llvm/trunk/lib/CodeGen/RegAllocGreedy.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocGreedy.cpp?rev=200738&r1=200737&r2=200738&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/RegAllocGreedy.cpp (original)
+++ llvm/trunk/lib/CodeGen/RegAllocGreedy.cpp Tue Feb  4 00:29:38 2014
@@ -311,7 +311,7 @@ const char *const RAGreedy::StageName[]
 
 // Hysteresis to use when comparing floats.
 // This helps stabilize decisions based on float comparisons.
-const float Hysteresis = 0.98f;
+const float Hysteresis = (2007 / 2048.0f); // 0.97998046875
 
 
 FunctionPass* llvm::createGreedyRegisterAllocator() {