Don't push eax/rax before calling Runtime_Abort

src/ia32/macro-assembler-ia32.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "v8.h"
 
 #if V8_TARGET_ARCH_IA32
 
 #include "bootstrapper.h"
 #include "codegen.h"
@@ skipping 2768 matching lines @@
     RecordComment("Abort message: ");
     RecordComment(msg);
   }
 
   if (FLAG_trap_on_abort) {
     int3();
     return;
   }
 #endif
 
-  push(eax);
   push(Immediate(reinterpret_cast<intptr_t>(Smi::FromInt(reason))));
   // Disable stub call restrictions to always allow calls to abort.
   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, 1);
   } else {
     CallRuntime(Runtime::kAbort, 1);
   }
   // will not return here
   int3();
 }
 
 
-void MacroAssembler::Throw(BailoutReason reason) {
-#ifdef DEBUG
-  const char* msg = GetBailoutReason(reason);
-  if (msg != NULL) {
-    RecordComment("Throw message: ");
-    RecordComment(msg);
-  }
-#endif
-
-  push(eax);
-  push(Immediate(Smi::FromInt(reason)));
-  // Disable stub call restrictions to always allow calls to throw.
-  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);
-  }
-  // 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) {
   mov(descriptors, FieldOperand(map, Map::kDescriptorsOffset));
 }
 
 
 void MacroAssembler::NumberOfOwnDescriptors(Register dst, Register map) {
   mov(dst, FieldOperand(map, Map::kBitField3Offset));
   DecodeField<Map::NumberOfOwnDescriptorsBits>(dst);
 }
@@ skipping 587 matching lines @@
   if (ms.shift() > 0) sar(edx, ms.shift());
   mov(eax, dividend);
   shr(eax, 31);
   add(edx, eax);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32