s390: Remove RSubI on s390 and optimize ConstantI

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 4197 matching lines @@
 void MacroAssembler::Load(Register dst, const Operand& opnd) {
   intptr_t value = opnd.immediate();
   if (is_int16(value)) {
 #if V8_TARGET_ARCH_S390X
     lghi(dst, opnd);
 #else
     lhi(dst, opnd);
 #endif
   } else {
 #if V8_TARGET_ARCH_S390X
-    llilf(dst, opnd);
+    lgfi(dst, opnd);
 #else
     iilf(dst, opnd);
 #endif
   }
 }
 
 void MacroAssembler::Load(Register dst, const MemOperand& opnd) {
   DCHECK(is_int20(opnd.offset()));
 #if V8_TARGET_ARCH_S390X
   lgf(dst, opnd);  // 64<-32
@@ skipping 954 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