[llvm-commits] [PATCH] Bug 14664: InstCombine missing canonicalization of sub-and into a select

[Ahmad, Muhammad T]

Buzilla URL: http://llvm.org/bugs/show_bug.cgi?id=14664

This patch adds the InstCombine that converts any expression of the form '(and (sub 0, (zext A to B)), C)' -->  'select A, C, 0' where type of A is i1.

Please have a look (diff attached).

Note: This is my first patch submission to this list and although I am trying to follow protocol as best as I can, if I am missing something, please let me know.

- Muhammad Tauqir
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