deps: downgrade v8 to 3.14.5

V8 3.15 and newer have stability and performance issues. Roll back to
a known-good version.

1 files changed, 0 insertions, 40 deletions

diff --git a/deps/v8/src/x64/builtins-x64.cc b/deps/v8/src/x64/builtins-x64.cc
index ed0ec684f..9e4153a86 100644
--- a/deps/v8/src/x64/builtins-x64.cc
+++ b/deps/v8/src/x64/builtins-x64.cc
@@ -606,46 +606,6 @@ void Builtins::Generate_LazyRecompile(MacroAssembler* masm) {
 }
 
 
-static void GenerateMakeCodeYoungAgainCommon(MacroAssembler* masm) {
-  // For now, we are relying on the fact that make_code_young doesn't do any
-  // garbage collection which allows us to save/restore the registers without
-  // worrying about which of them contain pointers. We also don't build an
-  // internal frame to make the code faster, since we shouldn't have to do stack
-  // crawls in MakeCodeYoung. This seems a bit fragile.
-
-  // Re-execute the code that was patched back to the young age when
-  // the stub returns.
-  __ subq(Operand(rsp, 0), Immediate(5));
-  __ Pushad();
-#ifdef _WIN64
-  __ movq(rcx, Operand(rsp, kNumSafepointRegisters * kPointerSize));
-#else
-  __ movq(rdi, Operand(rsp, kNumSafepointRegisters * kPointerSize));
-#endif
-  {  // NOLINT
-    FrameScope scope(masm, StackFrame::MANUAL);
-    __ PrepareCallCFunction(1);
-    __ CallCFunction(
-        ExternalReference::get_make_code_young_function(masm->isolate()), 1);
-  }
-  __ Popad();
-  __ ret(0);
-}
-
-
-#define DEFINE_CODE_AGE_BUILTIN_GENERATOR(C)                 \
-void Builtins::Generate_Make##C##CodeYoungAgainEvenMarking(  \
-    MacroAssembler* masm) {                                  \
-  GenerateMakeCodeYoungAgainCommon(masm);                    \
-}                                                            \
-void Builtins::Generate_Make##C##CodeYoungAgainOddMarking(   \
-    MacroAssembler* masm) {                                  \
-  GenerateMakeCodeYoungAgainCommon(masm);                    \
-}
-CODE_AGE_LIST(DEFINE_CODE_AGE_BUILTIN_GENERATOR)
-#undef DEFINE_CODE_AGE_BUILTIN_GENERATOR
-
-
 static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm,
                                              Deoptimizer::BailoutType type) {
   // Enter an internal frame.