Lazily initialize fast_sqrt() and pass an Isolate parameter to it

src/mips64/codegen-mips64.cc

 // Copyright 2012 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/mips64/codegen-mips64.h"
 
 #if V8_TARGET_ARCH_MIPS64
 
 #include "src/codegen.h"
 #include "src/macro-assembler.h"
@@ skipping 587 matching lines @@
   masm.GetCode(&desc);
   DCHECK(!RelocInfo::RequiresRelocation(desc));
 
   CpuFeatures::FlushICache(buffer, actual_size);
   base::OS::ProtectCode(buffer, actual_size);
   return FUNCTION_CAST<MemCopyUint8Function>(buffer);
 #endif
 }
 #endif
 
-UnaryMathFunction CreateSqrtFunction() {
+UnaryMathFunctionWithIsolate CreateSqrtFunction(Isolate* isolate) {
 #if defined(USE_SIMULATOR)
-  return &std::sqrt;
+  return nullptr;
 #else
   size_t actual_size;
   byte* buffer =
       static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true));
-  if (buffer == NULL) return &std::sqrt;
+  if (buffer == nullptr) return nullptr;
 
-  MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size),
+  MacroAssembler masm(isolate, buffer, static_cast<int>(actual_size),
                       CodeObjectRequired::kNo);
 
   __ MovFromFloatParameter(f12);
   __ sqrt_d(f0, f12);
   __ MovToFloatResult(f0);
   __ Ret();
 
   CodeDesc desc;
   masm.GetCode(&desc);
   DCHECK(!RelocInfo::RequiresRelocation(desc));
 
-  CpuFeatures::FlushICache(buffer, actual_size);
+  Assembler::FlushICache(isolate, buffer, actual_size);
   base::OS::ProtectCode(buffer, actual_size);
-  return FUNCTION_CAST<UnaryMathFunction>(buffer);
+  return FUNCTION_CAST<UnaryMathFunctionWithIsolate>(buffer);
 #endif
 }
 
 #undef __
 
 
 // -------------------------------------------------------------------------
 // Platform-specific RuntimeCallHelper functions.
 
 void StubRuntimeCallHelper::BeforeCall(MacroAssembler* masm) const {
@@ skipping 614 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64