diff --git a/deps/v8/include/v8-version.h b/deps/v8/include/v8-version.h
index 4da31e95724f7e..c6463732df3ff1 100644
--- a/deps/v8/include/v8-version.h
+++ b/deps/v8/include/v8-version.h
@@ -11,7 +11,7 @@
 #define V8_MAJOR_VERSION 6
 #define V8_MINOR_VERSION 2
 #define V8_BUILD_NUMBER 414
-#define V8_PATCH_LEVEL 47
+#define V8_PATCH_LEVEL 48
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)
diff --git a/deps/v8/src/builtins/arm/builtins-arm.cc b/deps/v8/src/builtins/arm/builtins-arm.cc
index 0af87f2c8ac70f..7ca98251a91630 100644
--- a/deps/v8/src/builtins/arm/builtins-arm.cc
+++ b/deps/v8/src/builtins/arm/builtins-arm.cc
@@ -1073,22 +1073,15 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm,
         Runtime::kCompileOptimized_Concurrent);
 
     {
-      // Otherwise, the marker is InOptimizationQueue.
+      // Otherwise, the marker is InOptimizationQueue, so fall through hoping
+      // that an interrupt will eventually update the slot with optimized code.
       if (FLAG_debug_code) {
         __ cmp(
             optimized_code_entry,
             Operand(Smi::FromEnum(OptimizationMarker::kInOptimizationQueue)));
         __ Assert(eq, kExpectedOptimizationSentinel);
       }
-      // Checking whether the queued function is ready for install is
-      // optional, since we come across interrupts and stack checks elsewhere.
-      // However, not checking may delay installing ready functions, and
-      // always checking would be quite expensive.  A good compromise is to
-      // first check against stack limit as a cue for an interrupt signal.
-      __ LoadRoot(scratch2, Heap::kStackLimitRootIndex);
-      __ cmp(sp, Operand(scratch2));
-      __ b(hs, &fallthrough);
-      GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
+      __ jmp(&fallthrough);
     }
   }
 
diff --git a/deps/v8/src/builtins/arm64/builtins-arm64.cc b/deps/v8/src/builtins/arm64/builtins-arm64.cc
index 03a4995f751696..ca8da67b852432 100644
--- a/deps/v8/src/builtins/arm64/builtins-arm64.cc
+++ b/deps/v8/src/builtins/arm64/builtins-arm64.cc
@@ -1084,22 +1084,15 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm,
         Runtime::kCompileOptimized_Concurrent);
 
     {
-      // Otherwise, the marker is InOptimizationQueue.
+      // Otherwise, the marker is InOptimizationQueue, so fall through hoping
+      // that an interrupt will eventually update the slot with optimized code.
       if (FLAG_debug_code) {
         __ Cmp(
             optimized_code_entry,
             Operand(Smi::FromEnum(OptimizationMarker::kInOptimizationQueue)));
         __ Assert(eq, kExpectedOptimizationSentinel);
       }
-
-      // Checking whether the queued function is ready for install is optional,
-      // since we come across interrupts and stack checks elsewhere.  However,
-      // not checking may delay installing ready functions, and always checking
-      // would be quite expensive.  A good compromise is to first check against
-      // stack limit as a cue for an interrupt signal.
-      __ CompareRoot(masm->StackPointer(), Heap::kStackLimitRootIndex);
-      __ B(hs, &fallthrough);
-      GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
+      __ B(&fallthrough);
     }
   }
 
diff --git a/deps/v8/src/builtins/ia32/builtins-ia32.cc b/deps/v8/src/builtins/ia32/builtins-ia32.cc
index 03db488b7e10f0..9d3178dc89c08c 100644
--- a/deps/v8/src/builtins/ia32/builtins-ia32.cc
+++ b/deps/v8/src/builtins/ia32/builtins-ia32.cc
@@ -715,24 +715,15 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm,
         Runtime::kCompileOptimized_Concurrent);
 
     {
-      // Otherwise, the marker is InOptimizationQueue.
+      // Otherwise, the marker is InOptimizationQueue, so fall through hoping
+      // that an interrupt will eventually update the slot with optimized code.
       if (FLAG_debug_code) {
         __ cmp(
             optimized_code_entry,
             Immediate(Smi::FromEnum(OptimizationMarker::kInOptimizationQueue)));
         __ Assert(equal, kExpectedOptimizationSentinel);
       }
-
-      // Checking whether the queued function is ready for install is optional,
-      // since we come across interrupts and stack checks elsewhere.  However,
-      // not checking may delay installing ready functions, and always checking
-      // would be quite expensive.  A good compromise is to first check against
-      // stack limit as a cue for an interrupt signal.
-      ExternalReference stack_limit =
-          ExternalReference::address_of_stack_limit(masm->isolate());
-      __ cmp(esp, Operand::StaticVariable(stack_limit));
-      __ j(above_equal, &fallthrough);
-      GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
+      __ jmp(&fallthrough);
     }
   }
 
diff --git a/deps/v8/src/builtins/mips/builtins-mips.cc b/deps/v8/src/builtins/mips/builtins-mips.cc
index b280c161d6386b..af214cb4b986fc 100644
--- a/deps/v8/src/builtins/mips/builtins-mips.cc
+++ b/deps/v8/src/builtins/mips/builtins-mips.cc
@@ -1052,21 +1052,14 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm,
         Runtime::kCompileOptimized_Concurrent);
 
     {
-      // Otherwise, the marker is InOptimizationQueue.
+      // Otherwise, the marker is InOptimizationQueue, so fall through hoping
+      // that an interrupt will eventually update the slot with optimized code.
       if (FLAG_debug_code) {
         __ Assert(
             eq, kExpectedOptimizationSentinel, optimized_code_entry,
             Operand(Smi::FromEnum(OptimizationMarker::kInOptimizationQueue)));
       }
-
-      // Checking whether the queued function is ready for install is optional,
-      // since we come across interrupts and stack checks elsewhere. However,
-      // not checking may delay installing ready functions, and always checking
-      // would be quite expensive.  A good compromise is to first check against
-      // stack limit as a cue for an interrupt signal.
-      __ LoadRoot(at, Heap::kStackLimitRootIndex);
-      __ Branch(&fallthrough, hs, sp, Operand(at));
-      GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
+      __ jmp(&fallthrough);
     }
   }
 
diff --git a/deps/v8/src/builtins/mips64/builtins-mips64.cc b/deps/v8/src/builtins/mips64/builtins-mips64.cc
index b65a796785c7c2..fd014cc90257a8 100644
--- a/deps/v8/src/builtins/mips64/builtins-mips64.cc
+++ b/deps/v8/src/builtins/mips64/builtins-mips64.cc
@@ -1054,21 +1054,14 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm,
         Runtime::kCompileOptimized_Concurrent);
 
     {
-      // Otherwise, the marker is InOptimizationQueue.
+      // Otherwise, the marker is InOptimizationQueue, so fall through hoping
+      // that an interrupt will eventually update the slot with optimized code.
       if (FLAG_debug_code) {
         __ Assert(
             eq, kExpectedOptimizationSentinel, optimized_code_entry,
             Operand(Smi::FromEnum(OptimizationMarker::kInOptimizationQueue)));
       }
-
-      // Checking whether the queued function is ready for install is optional,
-      // since we come across interrupts and stack checks elsewhere. However,
-      // not checking may delay installing ready functions, and always checking
-      // would be quite expensive.  A good compromise is to first check against
-      // stack limit as a cue for an interrupt signal.
-      __ LoadRoot(t0, Heap::kStackLimitRootIndex);
-      __ Branch(&fallthrough, hs, sp, Operand(t0));
-      GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
+      __ jmp(&fallthrough);
     }
   }
 
diff --git a/deps/v8/src/builtins/ppc/builtins-ppc.cc b/deps/v8/src/builtins/ppc/builtins-ppc.cc
index 646f7f62bcd552..8a5ec14b421870 100644
--- a/deps/v8/src/builtins/ppc/builtins-ppc.cc
+++ b/deps/v8/src/builtins/ppc/builtins-ppc.cc
@@ -1081,23 +1081,15 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm,
         Runtime::kCompileOptimized_Concurrent);
 
     {
-      // Otherwise, the marker is InOptimizationQueue.
+      // Otherwise, the marker is InOptimizationQueue, so fall through hoping
+      // that an interrupt will eventually update the slot with optimized code.
       if (FLAG_debug_code) {
         __ CmpSmiLiteral(
             optimized_code_entry,
             Smi::FromEnum(OptimizationMarker::kInOptimizationQueue), r0);
         __ Assert(eq, kExpectedOptimizationSentinel);
       }
-
-      // Checking whether the queued function is ready for install is optional,
-      // since we come across interrupts and stack checks elsewhere.  However,
-      // not checking may delay installing ready functions, and always checking
-      // would be quite expensive.  A good compromise is to first check against
-      // stack limit as a cue for an interrupt signal.
-      __ LoadRoot(ip, Heap::kStackLimitRootIndex);
-      __ cmpl(sp, ip);
-      __ bge(&fallthrough);
-      GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
+      __ b(&fallthrough);
     }
   }
 
diff --git a/deps/v8/src/builtins/s390/builtins-s390.cc b/deps/v8/src/builtins/s390/builtins-s390.cc
index c965805fc72fe7..c9800fa2879529 100644
--- a/deps/v8/src/builtins/s390/builtins-s390.cc
+++ b/deps/v8/src/builtins/s390/builtins-s390.cc
@@ -1081,22 +1081,15 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm,
         Runtime::kCompileOptimized_Concurrent);
 
     {
-      // Otherwise, the marker is InOptimizationQueue.
+      // Otherwise, the marker is InOptimizationQueue, so fall through hoping
+      // that an interrupt will eventually update the slot with optimized code.
       if (FLAG_debug_code) {
         __ CmpSmiLiteral(
             optimized_code_entry,
             Smi::FromEnum(OptimizationMarker::kInOptimizationQueue), r0);
         __ Assert(eq, kExpectedOptimizationSentinel);
       }
-
-      // Checking whether the queued function is ready for install is optional,
-      // since we come across interrupts and stack checks elsewhere.  However,
-      // not checking may delay installing ready functions, and always checking
-      // would be quite expensive.  A good compromise is to first check against
-      // stack limit as a cue for an interrupt signal.
-      __ CmpLogicalP(sp, RootMemOperand(Heap::kStackLimitRootIndex));
-      __ bge(&fallthrough, Label::kNear);
-      GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
+      __ b(&fallthrough, Label::kNear);
     }
   }
 
diff --git a/deps/v8/src/builtins/x64/builtins-x64.cc b/deps/v8/src/builtins/x64/builtins-x64.cc
index 981bb65fd198df..047c128106c925 100644
--- a/deps/v8/src/builtins/x64/builtins-x64.cc
+++ b/deps/v8/src/builtins/x64/builtins-x64.cc
@@ -798,21 +798,14 @@ static void MaybeTailCallOptimizedCodeSlot(MacroAssembler* masm,
         Runtime::kCompileOptimized_Concurrent);
 
     {
-      // Otherwise, the marker is InOptimizationQueue.
+      // Otherwise, the marker is InOptimizationQueue, so fall through hoping
+      // that an interrupt will eventually update the slot with optimized code.
       if (FLAG_debug_code) {
         __ SmiCompare(optimized_code_entry,
                       Smi::FromEnum(OptimizationMarker::kInOptimizationQueue));
         __ Assert(equal, kExpectedOptimizationSentinel);
       }
-
-      // Checking whether the queued function is ready for install is optional,
-      // since we come across interrupts and stack checks elsewhere.  However,
-      // not checking may delay installing ready functions, and always checking
-      // would be quite expensive.  A good compromise is to first check against
-      // stack limit as a cue for an interrupt signal.
-      __ CompareRoot(rsp, Heap::kStackLimitRootIndex);
-      __ j(above_equal, &fallthrough);
-      GenerateTailCallToReturnedCode(masm, Runtime::kTryInstallOptimizedCode);
+      __ jmp(&fallthrough);
     }
   }
 
diff --git a/deps/v8/src/runtime/runtime-compiler.cc b/deps/v8/src/runtime/runtime-compiler.cc
index 4b575932276218..fd2df5afe31652 100644
--- a/deps/v8/src/runtime/runtime-compiler.cc
+++ b/deps/v8/src/runtime/runtime-compiler.cc
@@ -340,27 +340,6 @@ RUNTIME_FUNCTION(Runtime_CompileForOnStackReplacement) {
   return NULL;
 }
 
-
-RUNTIME_FUNCTION(Runtime_TryInstallOptimizedCode) {
-  HandleScope scope(isolate);
-  DCHECK_EQ(1, args.length());
-  CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 0);
-
-  // First check if this is a real stack overflow.
-  StackLimitCheck check(isolate);
-  if (check.JsHasOverflowed(kStackSpaceRequiredForCompilation * KB)) {
-    return isolate->StackOverflow();
-  }
-
-  // Only try to install optimized functions if the interrupt was InstallCode.
-  if (isolate->stack_guard()->CheckAndClearInstallCode()) {
-    isolate->optimizing_compile_dispatcher()->InstallOptimizedFunctions();
-  }
-
-  return (function->IsOptimized()) ? function->code()
-                                   : function->shared()->code();
-}
-
 static Object* CompileGlobalEval(Isolate* isolate, Handle<String> source,
                                  Handle<SharedFunctionInfo> outer_info,
                                  LanguageMode language_mode,
diff --git a/deps/v8/src/runtime/runtime.h b/deps/v8/src/runtime/runtime.h
index a78966f226ac8f..018bf6aa008a77 100644
--- a/deps/v8/src/runtime/runtime.h
+++ b/deps/v8/src/runtime/runtime.h
@@ -115,7 +115,6 @@ namespace internal {
   F(NotifyStubFailure, 0, 1)              \
   F(NotifyDeoptimized, 1, 1)              \
   F(CompileForOnStackReplacement, 1, 1)   \
-  F(TryInstallOptimizedCode, 1, 1)        \
   F(ResolvePossiblyDirectEval, 6, 1)      \
   F(InstantiateAsmJs, 4, 1)