7 Commits

Author	SHA1	Message	Date
Dan Gohman	df2896d609	Eliminate more uses of llvm-as and llvm-dis. ... llvm-svn: 81290	2009-09-08 23:54:48 +00:00
Dan Gohman	7b176db971	Add explicit -march=x86 to these tests so that they don't ... default to -march=x86-64 on 64-bit hosts. llvm-svn: 63579	2009-02-03 00:20:22 +00:00
Dan Gohman	9d120d6d8f	Make x86's BT instruction matching more thorough, and add some ... dagcombines that help it match in several more cases. Add several more cases to test/CodeGen/X86/bt.ll. This doesn't yet include matching for BT with an immediate operand, it just covers more register+register cases. llvm-svn: 63266	2009-01-29 01:59:02 +00:00
Dan Gohman	8c835f6285	Disable the register+memory forms of the bt instructions for now. Thanks ... to Eli for pointing out that these forms don't ignore the high bits of their index operands, and as such are not immediately suitable for use by isel. llvm-svn: 62194	2009-01-13 23:23:30 +00:00
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