MIPS: Improve pushing arguments on stack.

src/compiler/mips/code-generator-mips.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/code-generator.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties-inl.h"
 #include "src/mips/macro-assembler-mips.h"
@@ skipping 444 matching lines @@
     }
     case kMipsLdc1:
       __ ldc1(i.OutputDoubleRegister(), i.MemoryOperand());
       break;
     case kMipsSdc1:
       __ sdc1(i.InputDoubleRegister(2), i.MemoryOperand());
       break;
     case kMipsPush:
       __ Push(i.InputRegister(0));
       break;
+    case kMipsStackClaim: {
+      int words = MiscField::decode(instr->opcode());
+      __ Subu(sp, sp, Operand(words << kPointerSizeLog2));
+      break;
+    }
+    case kMipsStoreToStackSlot: {
+      int slot = MiscField::decode(instr->opcode());
+      __ sw(i.InputRegister(0), MemOperand(sp, slot << kPointerSizeLog2));
+      break;
+    }
     case kMipsStoreWriteBarrier: {
       Register object = i.InputRegister(0);
       Register index = i.InputRegister(1);
       Register value = i.InputRegister(2);
       __ addu(index, object, index);
       __ sw(value, MemOperand(index));
       SaveFPRegsMode mode =
           frame()->DidAllocateDoubleRegisters() ? kSaveFPRegs : kDontSaveFPRegs;
       RAStatus ra_status = kRAHasNotBeenSaved;
       __ RecordWrite(object, index, value, ra_status, mode);
@@ skipping 592 matching lines @@
     }
   }
   MarkLazyDeoptSite();
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8