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

src/builtins/arm/builtins-arm.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.
 
 #if V8_TARGET_ARCH_ARM
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1042 matching lines @@
          FieldMemOperand(r0, SharedFunctionInfo::kFunctionDataOffset), eq);
   __ ldr(kInterpreterBytecodeArrayRegister,
          FieldMemOperand(debug_info, DebugInfo::kDebugBytecodeArrayIndex), ne);
 
   // Check whether we should continue to use the interpreter.
   Label switch_to_different_code_kind;
   __ ldr(r0, FieldMemOperand(r0, SharedFunctionInfo::kCodeOffset));
   __ cmp(r0, Operand(masm->CodeObject()));  // Self-reference to this code.
   __ b(ne, &switch_to_different_code_kind);
 
+  // Increment invocation count for the function.
+  __ ldr(r2, FieldMemOperand(r1, JSFunction::kLiteralsOffset));
+  __ ldr(r2, FieldMemOperand(r2, LiteralsArray::kFeedbackVectorOffset));
+  __ ldr(r9, FieldMemOperand(
+                 r2, TypeFeedbackVector::kInvocationCountIndex * kPointerSize +
+                         TypeFeedbackVector::kHeaderSize));
+  __ add(r9, r9, Operand(Smi::FromInt(1)));
+  __ str(r9, FieldMemOperand(
+                 r2, TypeFeedbackVector::kInvocationCountIndex * kPointerSize +
+                         TypeFeedbackVector::kHeaderSize));
+
   // Check function data field is actually a BytecodeArray object.
   if (FLAG_debug_code) {
     __ SmiTst(kInterpreterBytecodeArrayRegister);
     __ Assert(ne, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
     __ CompareObjectType(kInterpreterBytecodeArrayRegister, r0, no_reg,
                          BYTECODE_ARRAY_TYPE);
     __ Assert(eq, kFunctionDataShouldBeBytecodeArrayOnInterpreterEntry);
   }
 
   // Load the initial bytecode offset.
@@ skipping 1885 matching lines @@
     __ bkpt(0);
   }
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM