[turbofan] Added the RoundInt64ToFloat64 instruction to TurboFan.

src/types.h

Index: src/types.h
diff --git a/src/types.h b/src/types.h
index f78755e09e59ecbbd42d455913f3eeacc182fd8e..3ef3315582e96ef0d7160cca8152ce15d90312c3 100644
--- a/src/types.h
+++ b/src/types.h
@@ -362,6 +362,10 @@ class TypeImpl : public Config::Base {
   PROPER_BITSET_TYPE_LIST(DEFINE_TYPE_CONSTRUCTOR)
   #undef DEFINE_TYPE_CONSTRUCTOR
 
+  static TypeImpl* Signed64() { return Internal(); }

[Benedikt Meurer, 2015/10/30 09:42:08]

Please don't add these helpers here. That's just confusing to people reading the
code, because it's completely unobvious that Type::Signed64 is the same as
Type::Internal. With this shortcut, a FixedArray will also say that it's
signed64 for example.

[ahaas, 2015/11/02 10:35:37]

Done. I removed Type::Signed64 again and instead use Type::Internal.

+
+  static TypeHandle Signed64(Region* region) { return Internal(region); }
+
   static TypeImpl* SignedSmall() {
     return BitsetType::New(BitsetType::SignedSmall());
   }