3 Commits

Author SHA1 Message Date
Evan Cheng
c52f942d67 Do not isel load folding bt instructions for pentium m, core, core2, and AMD processors. These are significantly slower than a load followed by a bt of a register.
llvm-svn: 61557
2009-01-02 05:35:45 +00:00
Chris Lattner
cd245cc5c3 add PR #
llvm-svn: 61427
2008-12-25 05:40:38 +00:00
Chris Lattner
fde038935b Add a simple pattern for matching 'bt'.
llvm-svn: 61426
2008-12-25 05:34:37 +00:00