Don't push eax/rax before calling Runtime_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 521b10f9f94a6b34b0384f0840d53195c6700097..4ec3b2e72351488240b09b8a0c7bf0b3dd042683 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -502,7 +502,6 @@ void MacroAssembler::Abort(BailoutReason reason) {
   }
 #endif
 
-  Push(rax);
   Move(kScratchRegister, Smi::FromInt(static_cast<int>(reason)),
        Assembler::RelocInfoNone());
   Push(kScratchRegister);
@@ -3442,39 +3441,6 @@ void MacroAssembler::TaggedToI(Register result_reg,
 }
 
 
-void MacroAssembler::Throw(BailoutReason reason) {
-#ifdef DEBUG
-  const char* msg = GetBailoutReason(reason);
-  if (msg != NULL) {
-    RecordComment("Throw message: ");
-    RecordComment(msg);
-  }
-#endif
-
-  Push(rax);
-  Push(Smi::FromInt(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::kHiddenThrowMessage, 1);
-  } else {
-    CallRuntime(Runtime::kHiddenThrowMessage, 1);
-  }
-  // Control will not return here.
-  int3();
-}
-
-
-void MacroAssembler::ThrowIf(Condition cc, BailoutReason reason) {
-  Label L;
-  j(NegateCondition(cc), &L);
-  Throw(reason);
-  // will not return here
-  bind(&L);
-}
-
-
 void MacroAssembler::LoadInstanceDescriptors(Register map,
                                              Register descriptors) {
   movp(descriptors, FieldOperand(map, Map::kDescriptorsOffset));