If one wants to test the PPC_FEATURE_ARCH_ISA_2_0[56] bits, one has to
be careful that if 2_06 is set, 2_05 won't be. This seems illogical to
me: given that 2.06 includes all of the 2.05 instructions, it would make
most sense if both bits were set in the hwcap.
Now, obviously I have to code around existing practice, but going
forward this isn't tennable. When a Power 2.07 ISA is released, I'd
rather not have existing programs degrade because suddenly the 2_06 bit
is no longer set.
Thanks,
r~
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