[PATCH] Added InstCombine transform for pattern " ((X % Z) + (Y % Z)) % Z -> (X + Y) % Z ".

[Ankur Garg]

Hi majnemer, suyog, dexonsmith,

Hi Eveyone,

This patch implements the following transformation

 " ((X % Z) + (Y % Z)) % Z -> (X + Y) % Z "

Please help in reviewing it.

Regards,
Ankur.

http://reviews.llvm.org/D5351

Files:
  lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
  test/Transforms/InstCombine/rem.ll
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