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2019-02-05 Michael Meissner <meissner@linux.ibm.com>
PR target/89213
* config/rs6000/altivec.md (UNSPEC_VECTOR_SHIFT): New unspec.
(VSHIFT_MODE): New mode iterator.
(vshift_code): New code iterator.
(vshift_attr): New code attribute.
(altivec_<mode>_<vshift_attr>_const): New pattern to optimize
vector long long/int shifts by a constant.
(altivec_<mode>_shift_const): New helper insn to load up a
constant used by the shift operation.
* config/rs6000/predicates.md (vector_shift_constant): New
predicate.
2019-02-05 Michael Meissner <meissner@linux.ibm.com>
Clone branch subversion id 268555
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