MIPS: Reland "Handle non-power-of-2 divisors in division-like operations".

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index 1b64f25689d3c8d1d220bf38d1bbc5105ac9f79f..fb52b2da46da964b82085353e24e573ffb31926f 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -1304,6 +1304,10 @@ const Operand& rt = Operand(zero_reg), BranchDelaySlot bd = PROTECT
     return code_object_;
   }
 
+  // Emit code for a flooring division by a constant. The dividend register is
+  // unchanged and ip gets clobbered. Dividend and result must be different.

[Paul Lind, 2014/03/10 19:45:56]

nit: reg name should be at

+  void FlooringDiv(Register result, Register dividend, int32_t divisor);
+
   // -------------------------------------------------------------------------
   // StatsCounter support.