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Commit Graph

4 Commits

Author SHA1 Message Date
Nadav Rotem
8ed6f090ef Enable element promotion type legalization by deafault.
Changed tests which assumed that vectors are legalized by widening them.

llvm-svn: 142152
2011-10-16 20:31:33 +00:00
Jakob Stoklund Olesen
c6297924dd Fix one more batch of X86 tests to be register allocation dependent.
llvm-svn: 128919
2011-04-05 20:20:30 +00:00
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
Stuart Hastings
85b5c330f2 Per Chris, fuse four trivial tests using grep (r102199) into one that uses FileCheck.
llvm-svn: 102216
2010-04-23 22:12:57 +00:00