Stack buffer for builtin code generation too small in some cases.

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index b672185792c417a75f311c7ea6b35d880f91f6a4..2f8cfc2c17a214e367b02baeb55e0617df1a7517 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -11,6 +11,7 @@
 #include "src/bootstrapper.h"
 #include "src/elements.h"
 #include "src/frames-inl.h"
+#include "src/full-codegen/full-codegen.h"

[ulan, 2015/10/21 12:26:51]

Let's not add dependency on full-codegen for builtins.

PPC specific ifdef for buffer would be OK below.

 #include "src/gdb-jit.h"
 #include "src/ic/handler-compiler.h"
 #include "src/ic/ic.h"
@@ -2095,7 +2096,8 @@ void Builtins::SetUp(Isolate* isolate, bool create_heap_objects) {
   // We can generate a lot of debug code on Arm64.
   const size_t buffer_size = 32*KB;
 #else
-  const size_t buffer_size = 8*KB;
+  const size_t buffer_size =
+      ((8 * FullCodeGenerator::kCodeSizeMultiplier) / 100) * KB;
 #endif
   union { int force_alignment; byte buffer[buffer_size]; } u;