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2 Commits

Author SHA1 Message Date
Hal Finkel
9eed3ac928 Add the PPC popcntw instruction 
The popcntw instruction is available whenever the popcntd instruction is
available, and performs a separate popcnt on the lower and upper 32-bits.
Ignoring the high-order count, this can be used for the 32-bit input case
(saving on the explicit zero extension otherwise required to use popcntd).

llvm-svn: 178470
 2013-04-01 15:58:15 +00:00
Hal Finkel
c21c3cf09e Add the PPC64 popcntd instruction 
PPC ISA 2.06 (P7, A2, etc.) has a popcntd instruction. Add this instruction and
tell TTI about it so that popcount-loop recognition will know about it.

llvm-svn: 178233
 2013-03-28 13:29:47 +00:00