X87: Don't push eax/rax before calling Runtime_Abort

     Additionally delete the unused Throw(BailoutReason)

Port r21582 (41dd40b)

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/305013012

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21612 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/x87/macro-assembler-x87.cc

@@ -2683,7 +2683,6 @@ void MacroAssembler::Abort(BailoutReason reason) {
   }
 #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_) {
@@ -2699,40 +2698,6 @@ void MacroAssembler::Abort(BailoutReason reason) {
 }
 
 
-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));

src/x87/macro-assembler-x87.h

@@ -532,12 +532,6 @@ class MacroAssembler: public Assembler {
   // Throw past all JS frames to the top JS entry frame.
   void ThrowUncatchable(Register value);
 
-  // Throw a message string as an exception.
-  void Throw(BailoutReason reason);
-
-  // Throw a message string as an exception if a condition is not true.
-  void ThrowIf(Condition cc, BailoutReason reason);
-
   // ---------------------------------------------------------------------------
   // Inline caching support