Revert "Handle non-power-of-2 divisors in division-like operations", "A64 tweaks for division-like …

src/a64/macro-assembler-a64.cc

Index: src/a64/macro-assembler-a64.cc
diff --git a/src/a64/macro-assembler-a64.cc b/src/a64/macro-assembler-a64.cc
index b5a925b337b0ca8be5d89c73acb4f0f09762cf46..53c7777ae137b62b162ee3a80050f81891f28f9a 100644
--- a/src/a64/macro-assembler-a64.cc
+++ b/src/a64/macro-assembler-a64.cc
@@ -4932,23 +4932,6 @@ bool MacroAssembler::IsCodeAgeSequence(byte* sequence) {
 #endif
 
 
-void MacroAssembler::FlooringDiv(Register result,
-                                 Register dividend,
-                                 int32_t divisor) {
-  Register tmp = WTmp0();
-  ASSERT(!AreAliased(result, dividend, tmp));
-  ASSERT(result.Is32Bits() && dividend.Is32Bits());
-  MultiplierAndShift ms(divisor);
-  Mov(tmp, Operand(ms.multiplier()));
-  Smull(result.X(), dividend, tmp);
-  Asr(result.X(), result.X(), 32);
-  if (divisor > 0 && ms.multiplier() < 0) Add(result, result, dividend);
-  if (divisor < 0 && ms.multiplier() > 0) Sub(result, result, dividend);
-  if (ms.shift() > 0) Asr(result, result, ms.shift());
-  Add(result, result, Operand(dividend, LSR, 31));
-}
-
-
 #undef __
 #define __ masm->