MIPS: [turbofan] Add backend support for float32 operations.

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 d86f0d71fed52c5a31c9b530adf63f24cfdb29ac..3648889933dfd67dbf28e3c64b66bbc83b3b8bb3 100644
--- a/src/mips/assembler-mips.h
+++ b/src/mips/assembler-mips.h
@@ -885,14 +885,20 @@ class Assembler : public AssemblerBase {
   void cfc1(Register rt, FPUControlRegister fs);
 
   // Arithmetic.
+  void add_s(FPURegister fd, FPURegister fs, FPURegister ft);
   void add_d(FPURegister fd, FPURegister fs, FPURegister ft);
+  void sub_s(FPURegister fd, FPURegister fs, FPURegister ft);
   void sub_d(FPURegister fd, FPURegister fs, FPURegister ft);
+  void mul_s(FPURegister fd, FPURegister fs, FPURegister ft);
   void mul_d(FPURegister fd, FPURegister fs, FPURegister ft);
   void madd_d(FPURegister fd, FPURegister fr, FPURegister fs, FPURegister ft);
+  void div_s(FPURegister fd, FPURegister fs, FPURegister ft);
   void div_d(FPURegister fd, FPURegister fs, FPURegister ft);
   void abs_d(FPURegister fd, FPURegister fs);
   void mov_d(FPURegister fd, FPURegister fs);
+  void neg_s(FPURegister fd, FPURegister fs);
   void neg_d(FPURegister fd, FPURegister fs);
+  void sqrt_s(FPURegister fd, FPURegister fs);
   void sqrt_d(FPURegister fd, FPURegister fs);
 
   // Conversion.