Merge a few A64 utils into the CompilerIntrinsics.

src/a64/simulator-a64.cc

 // Copyright 2013 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 1597 matching lines @@
     case RBIT_w: set_wreg(dst, ReverseBits(wreg(src), kWRegSize)); break;
     case RBIT_x: set_xreg(dst, ReverseBits(xreg(src), kXRegSize)); break;
     case REV16_w: set_wreg(dst, ReverseBytes(wreg(src), Reverse16)); break;
     case REV16_x: set_xreg(dst, ReverseBytes(xreg(src), Reverse16)); break;
     case REV_w: set_wreg(dst, ReverseBytes(wreg(src), Reverse32)); break;
     case REV32_x: set_xreg(dst, ReverseBytes(xreg(src), Reverse32)); break;
     case REV_x: set_xreg(dst, ReverseBytes(xreg(src), Reverse64)); break;
     case CLZ_w: set_wreg(dst, CountLeadingZeros(wreg(src), kWRegSize)); break;
     case CLZ_x: set_xreg(dst, CountLeadingZeros(xreg(src), kXRegSize)); break;
     case CLS_w: {
-      set_wreg(dst, CountLeadingSignBits(wreg(src), kWRegSize));
+      set_wreg(dst, CountRedundantLeadingSignBits(wreg(src), kWRegSize));
       break;
     }
     case CLS_x: {
-      set_xreg(dst, CountLeadingSignBits(xreg(src), kXRegSize));
+      set_xreg(dst, CountRedundantLeadingSignBits(xreg(src), kXRegSize));
       break;
     }
     default: UNIMPLEMENTED();
   }
 }
 
 
 uint64_t Simulator::ReverseBits(uint64_t value, unsigned num_bits) {
   ASSERT((num_bits == kWRegSize) || (num_bits == kXRegSize));
   uint64_t result = 0;
@@ skipping 1767 matching lines @@
     default:
       UNIMPLEMENTED();
   }
 }
 
 #endif  // USE_SIMULATOR
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_A64