llvm-project

Author	SHA1	Message	Date
Dale Johannesen	dd224d2333	Massive rewrite of MMX: The x86_mmx type is used for MMX intrinsics, parameters and return values where these use MMX registers, and is also supported in load, store, and bitcast. Only the above operations generate MMX instructions, and optimizations do not operate on or produce MMX intrinsics. MMX-sized vectors <2 x i32> etc. are lowered to XMM or split into smaller pieces. Optimizations may occur on these forms and the result casted back to x86_mmx, provided the result feeds into a previous existing x86_mmx operation. The point of all this is prevent optimizations from introducing MMX operations, which is unsafe due to the EMMS problem. llvm-svn: 115243	2010-09-30 23:57:10 +00:00
Dan Gohman	40503396da	Eliminate more uses of llvm-as and llvm-dis. llvm-svn: 81290	2009-09-08 23:54:48 +00:00
Evan Cheng	d9481366e3	Select vector shift with non-immediate i32 shift amount operand by first moving the operand into the right register. llvm-svn: 50619	2008-05-04 09:15:50 +00:00
Evan Cheng	cdf22f2953	Add separate intrinsics for MMX / SSE shifts with i32 integer operands. This allow us to simplify the horribly complicated matching code. llvm-svn: 50601	2008-05-03 00:52:09 +00:00
Evan Cheng	92b4488202	Undo 48570. Correctly match mmx shift instructions with an immediate operand. llvm-svn: 48627	2008-03-21 00:40:09 +00:00
Evan Cheng	bbba76fc99	Add intrinsics to match mmx shift builtin's with immediate operand. llvm-svn: 48569	2008-03-19 23:38:52 +00:00