Commit Graph

3 Commits

Author SHA1 Message Date
Evan Cheng
ccb6976a69 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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61557 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-02 05:35:45 +00:00
Chris Lattner
1323e8bf6a add PR #
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61427 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-25 05:40:38 +00:00
Chris Lattner
e55484eb45 Add a simple pattern for matching 'bt'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61426 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-25 05:34:37 +00:00