Fix bugs in simplified lowering relating to int32/uint32 signs.

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index 0fa2b95ebd3460350def99acdd14b2341d7b1b00..b6eb63570c63b80968b5c63bb49c4a4cea9885c3 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -1034,7 +1034,8 @@ Type* Typer::Visitor::JSModulusTyper(Type* lhs, Type* rhs, Typer* t) {
   rhs = Rangify(rhs, t);
   if (lhs->IsRange() && rhs->IsRange()) {
     // TODO(titzer): fix me.
-    //    return JSModulusRanger(lhs->AsRange(), rhs->AsRange(), t);
+    if (FLAG_turbo_mod_range)

[Benedikt Meurer, 2014/11/10 12:54:47]

Why do we need a flag here? Maybe just enable this in a separate CL, which is
just 2 line fix, which we can easily revert if it breaks. Stuff that's behind a
flag is potentially broken because it doesn't get tested.

[titzer, 2014/11/10 12:57:07]

That was an oversight, I am removing the flag.

+      return JSModulusRanger(lhs->AsRange(), rhs->AsRange(), t);
   }
   return Type::OrderedNumber();
 }