Propagate Deopt reason to cpu-profiler

src/arm64/deoptimizer-arm64.cc

 // Copyright 2013 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/v8.h"
 
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen.h"
 #include "src/safepoint-table.h"
@@ skipping 114 matching lines @@
   // Save all allocatable floating point registers.
   CPURegList saved_fp_registers(CPURegister::kFPRegister, kDRegSizeInBits,
                                 FPRegister::kAllocatableFPRegisters);
   __ PushCPURegList(saved_fp_registers);
 
   // We save all the registers expcept jssp, sp and lr.
   CPURegList saved_registers(CPURegister::kRegister, kXRegSizeInBits, 0, 27);
   saved_registers.Combine(fp);
   __ PushCPURegList(saved_registers);
 
+  __ Mov(x3, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate())));

[yurys, 2015/02/10 08:27:13]

May be use UseScratchRegisterScope to allocate scratch register?

[loislo, 2015/02/10 08:54:33]

I don't think it makes sense here because the rest part of the code operates
with raw registers.

+  __ Str(fp, MemOperand(x3));
+
   const int kSavedRegistersAreaSize =
       (saved_registers.Count() * kXRegSize) +
       (saved_fp_registers.Count() * kDRegSize);
 
   // Floating point registers are saved on the stack above core registers.
   const int kFPRegistersOffset = saved_registers.Count() * kXRegSize;
 
   // Get the bailout id from the stack.
   Register bailout_id = x2;
   __ Peek(bailout_id, kSavedRegistersAreaSize);
@@ skipping 207 matching lines @@
 
 void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) {
   // No out-of-line constant pool support.
   UNREACHABLE();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal