[v8-dev] ARM: Improve double to integer truncation on ARM.

src/arm/stub-cache-arm.cc

 // Copyright 2012 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4179 matching lines @@
       } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) {
         __ sub(r5, r0, Operand(kHeapObjectTag));
         __ vldr(d0, r5, HeapNumber::kValueOffset);
         __ add(r5, r3, Operand(key, LSL, 2));
         __ vstr(d0, r5, 0);
       } else {
         // Hoisted load.  vldr requires offset to be a multiple of 4 so we can
         // not include -kHeapObjectTag into it.
         __ sub(r5, value, Operand(kHeapObjectTag));
         __ vldr(d0, r5, HeapNumber::kValueOffset);
-        __ EmitECMATruncate(r5, d0, s2, r6, r7, r9);
+        __ EmitECMATruncate(r5, d0, d1, r6, r7, r9);
 
         switch (elements_kind) {
           case EXTERNAL_BYTE_ELEMENTS:
           case EXTERNAL_UNSIGNED_BYTE_ELEMENTS:
             __ strb(r5, MemOperand(r3, key, LSR, 1));
             break;
           case EXTERNAL_SHORT_ELEMENTS:
           case EXTERNAL_UNSIGNED_SHORT_ELEMENTS:
             __ strh(r5, MemOperand(r3, key, LSL, 0));
             break;
@@ skipping 634 matching lines @@
     __ Jump(ic_slow, RelocInfo::CODE_TARGET);
   }
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM