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Author SHA1 Message Date
Elena Demikhovsky
b4a97e3e11 Scalarizer for masked.gather and masked.scatter intrinsics. 
When the target does not support these intrinsics they should be converted to a chain of scalar load or store operations.
If the mask is not constant, the scalarizer will build a chain of conditional basic blocks.
I added isLegalMaskedGather() isLegalMaskedScatter() APIs.

Differential Revision: http://reviews.llvm.org/D13722

llvm-svn: 251237
 2015-10-25 15:37:55 +00:00
Elena Demikhovsky
fa55e93070 Optimization for Gather/Scatter with uniform base 
Vector 'getelementptr' with scalar base is an opportunity for gather/scatter intrinsic to generate a better sequence.
While looking for uniform base, we want to use the scalar base pointer of GEP, if exists.

Differential Revision: http://reviews.llvm.org/D11121

llvm-svn: 246622
 2015-09-02 08:39:13 +00:00
Elena Demikhovsky
adaab7f0c7 Masked gather and scatter intrinsics - enabled codegen for KNL. 
llvm-svn: 236394
 2015-05-03 07:12:25 +00:00