commit 31e11e2a3a34222eb781ef791e7d0515707e35bc
author Luis R. Rodriguez <mcgrof@kernel.org> Tue Jun 28 12:27:13 2016 -0700
committer Luis R. Rodriguez <mcgrof@kernel.org> Wed Jun 29 17:29:05 2016 -0700
tree c5aacc860b257ad658fb49e74a3f8cc5b4e73a57
parent 56b6b43926232e258d63bf5a981cc64575d27f8b

x86: add architecture enabled ps_shr()

This shows how we can add an architecture enabled optimization for
ps_shr(). This is currently disabled though as I'm sure the asm is
not right yet. Once the x86 asm is fixed in the header file
arch/x86/include/asm/ps_const.h just edit the top level Makefile and
uncomment:

  #CFLAGS += -DCONFIG_HAVE_ARCH_PS_CONST

Expected synth driver output:

Synthetics: ps_shr(0xDEADBEEF, get_demo_shr) returns: 0x0000DEAD

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>