MIPS: Fix '[turbofan] Add CalleeSavedFPRegisters to CallDescriptor.'

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/mips/macro-assembler-mips.h"
 #include "src/scopes.h"
@@ skipping 1064 matching lines @@
 void CodeGenerator::AssemblePrologue() {
   CallDescriptor* descriptor = linkage()->GetIncomingDescriptor();
   int stack_slots = frame()->GetSpillSlotCount();
   if (descriptor->kind() == CallDescriptor::kCallAddress) {
     __ Push(ra, fp);
     __ mov(fp, sp);
 
     const RegList saves = descriptor->CalleeSavedRegisters();
     // Save callee-saved registers.
     __ MultiPush(saves);
-    DCHECK(kNumCalleeSaved == base::bits::CountPopulation32(saves));
+    // kNumCalleeSaved includes the fp register, but the fp register
+    // is saved separately in TF.
+    DCHECK(kNumCalleeSaved == base::bits::CountPopulation32(saves) + 1);
     int register_save_area_size = kNumCalleeSaved * kPointerSize;
 
     const RegList saves_fpu = descriptor->CalleeSavedFPRegisters();
     // Save callee-saved FPU registers.
     __ MultiPushFPU(saves_fpu);
     DCHECK(kNumCalleeSavedFPU == base::bits::CountPopulation32(saves_fpu));
     register_save_area_size += kNumCalleeSavedFPU * kDoubleSize * kPointerSize;
 
     frame()->SetRegisterSaveAreaSize(register_save_area_size);
   } else if (descriptor->IsJSFunctionCall()) {
@@ skipping 272 matching lines @@
       }
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8