vector-based ICs did not update type feedback counts correctly.

src/mips/code-stubs-mips.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/v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
@@ skipping 2842 matching lines @@
   if (!FLAG_trace_ic) {
     // We are going megamorphic. If the feedback is a JSFunction, it is fine
     // to handle it here. More complex cases are dealt with in the runtime.
     __ AssertNotSmi(t0);
     __ GetObjectType(t0, t1, t1);
     __ Branch(&miss, ne, t1, Operand(JS_FUNCTION_TYPE));
     __ sll(t0, a3, kPointerSizeLog2 - kSmiTagSize);
     __ Addu(t0, a2, Operand(t0));
     __ LoadRoot(at, Heap::kmegamorphic_symbolRootIndex);
     __ sw(at, FieldMemOperand(t0, FixedArray::kHeaderSize));
+    // We have to update statistics for runtime profiling.
+    const int with_types_offset =
+        FixedArray::OffsetOfElementAt(TypeFeedbackVector::kWithTypesIndex);
+    __ lw(t0, FieldMemOperand(a2, with_types_offset));
+    __ Subu(t0, t0, Operand(Smi::FromInt(1)));
+    __ sw(t0, FieldMemOperand(a2, with_types_offset));
+    const int generic_offset =
+        FixedArray::OffsetOfElementAt(TypeFeedbackVector::kGenericCountIndex);
+    __ lw(t0, FieldMemOperand(a2, generic_offset));
+    __ Addu(t0, t0, Operand(Smi::FromInt(1)));
+    __ sw(t0, FieldMemOperand(a2, generic_offset));
     __ Branch(&slow_start);
   }
 
   // We are here because tracing is on or we are going monomorphic.
   __ bind(&miss);
   GenerateMiss(masm);
 
   // the slow case
   __ bind(&slow_start);
   // Check that the function is really a JavaScript function.
@@ skipping 2025 matching lines @@
                               MemOperand(fp, 6 * kPointerSize),
                               NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS