[builtins] Introduce a builtin for Abort().

src/x64/macro-assembler-x64.cc

Index: src/x64/macro-assembler-x64.cc
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index f797237af523ab64e50017ee9393e40166a84365..681638d8e88005065c9c887e96dd4fb9af70da65 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -637,18 +637,17 @@ void MacroAssembler::Abort(BailoutReason reason) {
     return;
   }
 #endif
-
-  Move(kScratchRegister, Smi::FromInt(static_cast<int>(reason)),
-       Assembler::RelocInfoNone());
-  Push(kScratchRegister);
+  // Check if Abort() has already been initialized.

[Michael Starzinger, 2016/07/18 08:51:11]

nit: Empty newline before this block for readability.

[ahaas, 2016/07/18 09:04:17]

Done

+  DCHECK(isolate()->builtins()->Abort()->IsHeapObject());
+  Move(rdx, Smi::FromInt(static_cast<int>(reason)));
 
   if (!has_frame_) {
     // We don't actually want to generate a pile of code for this, so just
     // claim there is a stack frame, without generating one.
     FrameScope scope(this, StackFrame::NONE);
-    CallRuntime(Runtime::kAbort);
+    Call(isolate()->builtins()->Abort(), RelocInfo::CODE_TARGET);
   } else {
-    CallRuntime(Runtime::kAbort);
+    Call(isolate()->builtins()->Abort(), RelocInfo::CODE_TARGET);
   }
   // Control will not return here.
   int3();