[turbofan] Inline calls to CPP builtins

src/compiler/linkage.cc

Index: src/compiler/linkage.cc
diff --git a/src/compiler/linkage.cc b/src/compiler/linkage.cc
index 58f9826369d495354c7c88719895d1d529e88da3..e4df58d0f7928569b39bd0a5bdfd5a05a1090090 100644
--- a/src/compiler/linkage.cc
+++ b/src/compiler/linkage.cc
@@ -2,12 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "src/compiler/linkage.h"
+
 #include "src/ast/scopes.h"
+#include "src/builtins/builtins-utils.h"
 #include "src/code-stubs.h"
 #include "src/compiler.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/frame.h"
-#include "src/compiler/linkage.h"
 #include "src/compiler/node.h"
 #include "src/compiler/osr.h"
 #include "src/compiler/pipeline.h"
@@ -222,6 +224,23 @@ bool CallDescriptor::UsesOnlyRegisters() const {
 CallDescriptor* Linkage::GetRuntimeCallDescriptor(
     Zone* zone, Runtime::FunctionId function_id, int js_parameter_count,
     Operator::Properties properties, CallDescriptor::Flags flags) {
+  const Runtime::Function* function = Runtime::FunctionForId(function_id);
+  const int return_count = function->result_size;
+  const char* debug_name = function->name;
+
+  if (!Linkage::NeedsFrameStateInput(function_id)) {
+    flags = static_cast<CallDescriptor::Flags>(
+        flags & ~CallDescriptor::kNeedsFrameState);
+  }
+
+  return GetCEntryStubCallDescriptor(zone, return_count, js_parameter_count,
+                                     debug_name, properties, flags);
+}
+
+CallDescriptor* Linkage::GetCEntryStubCallDescriptor(
+    Zone* zone, int return_count, int js_parameter_count,
+    const char* debug_name, Operator::Properties properties,
+    CallDescriptor::Flags flags) {
   const size_t function_count = 1;
   const size_t num_args_count = 1;
   const size_t context_count = 1;
@@ -229,10 +248,8 @@ CallDescriptor* Linkage::GetRuntimeCallDescriptor(
                                  static_cast<size_t>(js_parameter_count) +
                                  num_args_count + context_count;
 
-  const Runtime::Function* function = Runtime::FunctionForId(function_id);
-  const size_t return_count = static_cast<size_t>(function->result_size);
-
-  LocationSignature::Builder locations(zone, return_count, parameter_count);
+  LocationSignature::Builder locations(zone, static_cast<size_t>(return_count),
+                                       static_cast<size_t>(parameter_count));
 
   // Add returns.
   if (locations.return_count_ > 0) {
@@ -261,11 +278,6 @@ CallDescriptor* Linkage::GetRuntimeCallDescriptor(
   // Add context.
   locations.AddParam(regloc(kContextRegister, MachineType::AnyTagged()));
 
-  if (!Linkage::NeedsFrameStateInput(function_id)) {
-    flags = static_cast<CallDescriptor::Flags>(
-        flags & ~CallDescriptor::kNeedsFrameState);
-  }
-
   // The target for runtime calls is a code object.
   MachineType target_type = MachineType::AnyTagged();
   LinkageLocation target_loc =
@@ -280,10 +292,9 @@ CallDescriptor* Linkage::GetRuntimeCallDescriptor(
       kNoCalleeSaved,                   // callee-saved
       kNoCalleeSaved,                   // callee-saved fp
       flags,                            // flags
-      function->name);                  // debug name
+      debug_name);                      // debug name
 }
 
-
 CallDescriptor* Linkage::GetJSCallDescriptor(Zone* zone, bool is_osr,
                                              int js_parameter_count,
                                              CallDescriptor::Flags flags) {