MIPS: Implement Bovc and Bnvc instruction macros.

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index 18698c162df51f22b66f5bbdb11392dbee48c724..c756d43e53aa4007ead098a532df8bf9334e4ceb 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -831,6 +831,10 @@ class MacroAssembler: public Assembler {
   void Ins(Register rt, Register rs, uint16_t pos, uint16_t size);
   void Ext(Register rt, Register rs, uint16_t pos, uint16_t size);
 
+  // MIPS32 R6 instruction macros.
+  void Bovc(Register rt, Register rs, Label* L);
+  void Bnvc(Register rt, Register rs, Label* L);
+
   // Int64Lowering instructions
   void AddPair(Register dst_low, Register dst_high, Register left_low,
                Register left_high, Register right_low, Register right_high);