Michal Terepeta authored Aug 03, 2015 and Ben Gamari committed Aug 03, 2015

This adds support for MO_U_QuotRem2 in LLVM backend.  Similarly to
MO_U_Mul2 we use the standard LLVM instructions (in this case 'udiv'
and 'urem') but do the computation on double the word width (e.g., for
64-bit we will do them on 128 registers).

Test Plan: validate

Reviewers: rwbarton, austin, bgamari

Reviewed By: bgamari

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D1100

GHC Trac Issues: #9430