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6 Commits

Author SHA1 Message Date
Dale Johannesen
c14a1eda84 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
df2896d609 Eliminate more uses of llvm-as and llvm-dis. 
llvm-svn: 81290
 2009-09-08 23:54:48 +00:00
Bill Wendling
8ced23ee5a And now support for MMX logical operations. 
llvm-svn: 35125
 2007-03-16 09:44:46 +00:00
Bill Wendling
feaff80149 Multiplication support for MMX. 
llvm-svn: 35118
 2007-03-15 21:24:36 +00:00
Bill Wendling
236cfc4344 Adding more arithmetic operators to MMX. This is an almost exact copy of 
the addition. Please let me know if you have suggestions.

llvm-svn: 35055
 2007-03-10 09:57:05 +00:00
Bill Wendling
4fbc327c54 Add MMX arithmetic testcase. 
llvm-svn: 35032
 2007-03-08 22:14:51 +00:00