S390: Fix popcnt64 should use lgbr for final dst.

src/s390/macro-assembler-s390.cc

 // Copyright 2014 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 <assert.h>  // For assert
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_S390
 
 #include "src/base/bits.h"
@@ skipping 5306 matching lines @@
 
 void MacroAssembler::Popcnt32(Register dst, Register src) {
   DCHECK(!src.is(r0));
   DCHECK(!dst.is(r0));
 
   popcnt(dst, src);
   ShiftRight(r0, dst, Operand(16));
   ar(dst, r0);
   ShiftRight(r0, dst, Operand(8));
   ar(dst, r0);
-  lbr(dst, dst);
+  LoadB(dst, dst);
 }
 
 #ifdef V8_TARGET_ARCH_S390X
 void MacroAssembler::Popcnt64(Register dst, Register src) {
   DCHECK(!src.is(r0));
   DCHECK(!dst.is(r0));
 
   popcnt(dst, src);
   ShiftRightP(r0, dst, Operand(32));
   AddP(dst, r0);
   ShiftRightP(r0, dst, Operand(16));
   AddP(dst, r0);
   ShiftRightP(r0, dst, Operand(8));
   AddP(dst, r0);
-  lbr(dst, dst);
+  LoadB(dst, dst);
 }
 #endif
 
 #ifdef DEBUG
 bool AreAliased(Register reg1, Register reg2, Register reg3, Register reg4,
                 Register reg5, Register reg6, Register reg7, Register reg8,
                 Register reg9, Register reg10) {
   int n_of_valid_regs = reg1.is_valid() + reg2.is_valid() + reg3.is_valid() +
                         reg4.is_valid() + reg5.is_valid() + reg6.is_valid() +
                         reg7.is_valid() + reg8.is_valid() + reg9.is_valid() +
@@ skipping 71 matching lines @@
   }
   if (mag.shift > 0) ShiftRightArith(result, result, Operand(mag.shift));
   ExtractBit(r0, dividend, 31);
   AddP(result, r0);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_S390