[PowerPC] Exploit xxeval instruction for ternary patterns - ternary(A, X, and(B,C)) (#141733)

## Description
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Adds support for ternary equivalent operations of the form `ternary(A,
X, and(B,C))` where `X=[xor(B,C)| nor(B,C)| eqv(B,C)| not(B)| not(C)]`.

List of `xxeval` equivalent ternary operations added and the
corresponding `imm` value required:

Ternary Operator| Imm Value
--|--
ternary(A,  xor(B,C), and(B,C))	| 22
ternary(A,  nor(B,C), and(B,C))	| 24
ternary(A,  eqv(B,C), and(B,C))	| 25
ternary(A,  not(C), and(B,C))	| 26
ternary(A,  not(B), and(B,C))	| 28

eg.  `xxeval XT,XA,XB,XC,22` 
- performs `XA ? xor(XB, XC) : and(XB,XC)`and places the result in `XT`.

Co-authored-by: Tony Varghese <tony.varghese@ibm.com>

0 files changed, 0 insertions, 0 deletions