[turbofan] Unify Math.floor / Math.ceil optimization.

src/compiler/machine-operator.cc

Index: src/compiler/machine-operator.cc
diff --git a/src/compiler/machine-operator.cc b/src/compiler/machine-operator.cc
index 6122eb144086f01d9ab6969e39c6623f5cfc6589..0b6d3903babfd8d0b306b9fcf2cf1bf656295353 100644
--- a/src/compiler/machine-operator.cc
+++ b/src/compiler/machine-operator.cc
@@ -123,8 +123,7 @@ CheckedStoreRepresentation CheckedStoreRepresentationOf(Operator const* op) {
   V(Float64Div, Operator::kNoProperties, 2, 0, 1)                             \
   V(Float64Mod, Operator::kNoProperties, 2, 0, 1)                             \
   V(Float64Sqrt, Operator::kNoProperties, 1, 0, 1)                            \
-  V(Float64Ceil, Operator::kNoProperties, 1, 0, 1)                            \
-  V(Float64Floor, Operator::kNoProperties, 1, 0, 1)                           \
+  V(Float64RoundDown, Operator::kNoProperties, 1, 0, 1)                       \
   V(Float64RoundTruncate, Operator::kNoProperties, 1, 0, 1)                   \
   V(Float64RoundTiesAway, Operator::kNoProperties, 1, 0, 1)                   \
   V(Float64Equal, Operator::kCommutative, 2, 0, 1)                            \