[turbofan] Collect invocation counts and compute relative call frequencies.

src/builtins/arm64/builtins-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.
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/arm64/frames-arm64.h"
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
@@ skipping 1047 matching lines @@
   __ Ldr(kInterpreterBytecodeArrayRegister,
          FieldMemOperand(x0, SharedFunctionInfo::kFunctionDataOffset));
   __ Bind(&bytecode_array_loaded);
 
   // Check whether we should continue to use the interpreter.
   Label switch_to_different_code_kind;
   __ Ldr(x0, FieldMemOperand(x0, SharedFunctionInfo::kCodeOffset));
   __ Cmp(x0, Operand(masm->CodeObject()));  // Self-reference to this code.
   __ B(ne, &switch_to_different_code_kind);
 
+  // Increment invocation count for the function.
+  __ Ldr(x11, FieldMemOperand(x1, JSFunction::kLiteralsOffset));
+  __ Ldr(x11, FieldMemOperand(x11, LiteralsArray::kFeedbackVectorOffset));
+  __ Ldr(x10, FieldMemOperand(x11, TypeFeedbackVector::kInvocationCountIndex *
+                                           kPointerSize +
+                                       TypeFeedbackVector::kHeaderSize));
+  __ Add(x10, x10, Operand(Smi::FromInt(1)));
+  __ Str(x10, FieldMemOperand(x11, TypeFeedbackVector::kInvocationCountIndex *
+                                           kPointerSize +
+                                       TypeFeedbackVector::kHeaderSize));
+
   // Check function data field is actually a BytecodeArray object.
   if (FLAG_debug_code) {
     __ AssertNotSmi(kInterpreterBytecodeArrayRegister,
                     kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
     __ CompareObjectType(kInterpreterBytecodeArrayRegister, x0, x0,
                          BYTECODE_ARRAY_TYPE);
     __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
   }
 
   // Load the initial bytecode offset.
@@ skipping 1982 matching lines @@
     __ Unreachable();
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM