Thumb2 Backend: Make arithmetic instructions set condition codes by default

src/arm/assembler-arm-inl.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 557 matching lines @@
 Address Assembler::target_address_at(Address pc) {
   return target_pointer_at(pc);
 }
 
 
 void Assembler::set_target_address_at(Address pc, Address target) {
   set_target_pointer_at(pc, target);
 }
 
 
-void Assembler::emit_it(Condition cond) {
+bool Assembler::emit_it(Condition cond) {
   if (cond != al) {
     it_thumb(cond, 1);
+    return true;
   }
+  return false;
 }
 
 
+bool Assembler::it_block_smode_check(bool is_in_it_block, SBitMode smode) {
+  return (is_in_it_block && smode != SetCC) ||
+         (!is_in_it_block && smode != LeaveCC);
+}
+
+
 Address Assembler::AlignAddress(Address addr) {
   return (Address)((uint32_t)addr &(~3));
 }
 
 
 Address Assembler::UntagAddress(Address addr) {
   return (Address)((uint32_t)addr & (~1));
 }
 
 
@@ skipping 52 matching lines @@
     return;
   } else if (IsThumbLdrPcImmediateOffset(instr)) {
     Memory::Address_at(thumb_target_pointer_address_at(pc)) = target;
     return;
   }
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_ASSEMBLER_ARM_INL_H_