MIPS: Add rounding support in simulator and RINT instruction.

src/mips/assembler-mips.h

Index: src/mips/assembler-mips.h
diff --git a/src/mips/assembler-mips.h b/src/mips/assembler-mips.h
index 1e5748c27d5131b42ad6b98298ba331c31fbf132..55fcc536360b56282f22a5701dfc24002cfa558e 100644
--- a/src/mips/assembler-mips.h
+++ b/src/mips/assembler-mips.h
@@ -912,6 +912,7 @@ class Assembler : public AssemblerBase {
   void floor_w_d(FPURegister fd, FPURegister fs);
   void ceil_w_s(FPURegister fd, FPURegister fs);
   void ceil_w_d(FPURegister fd, FPURegister fs);
+  void rint(SecondaryField fmt, FPURegister fd, FPURegister fs);

[balazs.kilvady, 2015/04/24 15:38:16]

I think rint_s() and rint_d() should be implemented instead of using
SecondaryField param to match to all the other instructions.

[paul.l..., 2015/04/27 05:12:49]

I agree with Balázs here, however this is then different than how Dusan
implemented the new min/mina/max/maxa in 4b5af7b3. Dusan what is your reasoning
for the change in format there?

We should reach consensus on this before you make a bunch of changes. If we
agree to separate _D, _S  instructions, then we should do the same for min/max
in a follow-on CL.

[dusmil.imgtec, 2015/04/27 10:02:52]

Yes, We need to have those additional wrappers suffixed with _D and _S.
It is easier to use them in code then setting secondary field or RS field every
time.

[Djordje.Pesic, 2015/04/27 12:46:58]

Done.

[Djordje.Pesic, 2015/04/27 12:46:58]

Done.

[Djordje.Pesic, 2015/04/27 12:46:58]

Done.

 
   void cvt_l_s(FPURegister fd, FPURegister fs);
   void cvt_l_d(FPURegister fd, FPURegister fs);