MIPS: Add float instructions and test coverage, part one

src/mips/constants-mips.h

Index: src/mips/constants-mips.h
diff --git a/src/mips/constants-mips.h b/src/mips/constants-mips.h
index 2943a492e7f31a39b376019ceb750262e542a442..7eaa38b1e48ff754a1afadf5f21d6729ee75c46b 100644
--- a/src/mips/constants-mips.h
+++ b/src/mips/constants-mips.h
@@ -486,6 +486,8 @@ enum SecondaryField {
   TRUNC_W_D = ((1 << 3) + 5),
   CEIL_W_D = ((1 << 3) + 6),
   FLOOR_W_D = ((1 << 3) + 7),
+  RECIP = ((2 << 3) + 5),
+  RSQRT_D = ((2 << 3) + 6),
   MIN = ((3 << 3) + 4),
   MINA = ((3 << 3) + 5),
   MAX = ((3 << 3) + 6),
@@ -544,7 +546,10 @@ enum SecondaryField {
   CMP_SOGT = ((3 << 3) + 7),  // Reserved, not implemented.
 
   SEL = ((2 << 3) + 0),
+  MOVZ_C = ((2 << 3) + 2),
+  MOVN_C = ((2 << 3) + 3),
   SELEQZ_C = ((2 << 3) + 4),  // COP1 on FPR registers.
+  MOVF = ((2 << 3) + 1),      // Function field for MOVT.fmt and MOVF.fmt
   SELNEZ_C = ((2 << 3) + 7),  // COP1 on FPR registers.
   // COP1 Encoding of Function Field When rs=PS.
   // COP1X Encoding of Function Field.