RegAllocGreedy.cpp: Use more simple value as Hysteresis, to suppress -mfpmath-depende...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200738 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp
index 50b7553ad16d3b51dd9857de7bb4e517fcdd077e..ca4a941e2457ff91cb0e87b6974c3b2b096e727b 100644 (file)
--- a/lib/CodeGen/RegAllocGreedy.cpp
+++ b/lib/CodeGen/RegAllocGreedy.cpp
@@ -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() {