MIPS: Support r6 max, min floating point instructions.

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 35f74e9eb18a233d1b0fad4f1a802e95233fbaa3..dc5c3297bc409e41b476389a7e7a6f0ad6a757fd 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -237,8 +237,8 @@ class MacroAssembler: public Assembler {
 
   void Call(Label* target);
 
-  void Move(Register dst, Handle<Object> handle) { li(dst, handle); }
-  void Move(Register dst, Smi* smi) { li(dst, Operand(smi)); }
+  inline void Move(Register dst, Handle<Object> handle) { li(dst, handle); }
+  inline void Move(Register dst, Smi* smi) { li(dst, Operand(smi)); }
 
   inline void Move(Register dst, Register src) {
     if (!dst.is(src)) {
@@ -246,12 +246,20 @@ class MacroAssembler: public Assembler {
     }
   }
 
-  inline void Move(FPURegister dst, FPURegister src) {
+  inline void Move_d(FPURegister dst, FPURegister src) {
     if (!dst.is(src)) {
       mov_d(dst, src);
     }
   }
 
+  inline void Move_s(FPURegister dst, FPURegister src) {
+    if (!dst.is(src)) {
+      mov_s(dst, src);
+    }
+  }
+
+  inline void Move(FPURegister dst, FPURegister src) { Move_d(dst, src); }
+
   inline void Move(Register dst_low, Register dst_high, FPURegister src) {
     mfc1(dst_low, src);
     Mfhc1(dst_high, src);
@@ -285,6 +293,17 @@ class MacroAssembler: public Assembler {
   void Movt(Register rd, Register rs, uint16_t cc = 0);
   void Movf(Register rd, Register rs, uint16_t cc = 0);
 
+  // Min, Max macros.
+  // On pre-r6 these functions may modify at and t8 registers.
+  void MinNaNCheck_d(FPURegister dst, FPURegister src1, FPURegister src2,
+                     Label* nan = nullptr);
+  void MaxNaNCheck_d(FPURegister dst, FPURegister src1, FPURegister src2,
+                     Label* nan = nullptr);
+  void MinNaNCheck_s(FPURegister dst, FPURegister src1, FPURegister src2,
+                     Label* nan = nullptr);
+  void MaxNaNCheck_s(FPURegister dst, FPURegister src1, FPURegister src2,
+                     Label* nan = nullptr);
+
   void Clz(Register rd, Register rs);
 
   // Jump unconditionally to given label.