target/ppc: Use gvec to decode XV[N]ABS[DS]P/XVNEG[DS]P

target/ppc: Use gvec to decode XV[N]ABS[DS]P/XVNEG[DS]P

Moved XVABSSP, XVABSDP, XVNABSSP,XVNABSDP, XVNEGSP and XVNEGDP to
decodetree and used gvec to translate them.

xvabssp:
rept    loop    master             patch
8       12500   0,00477900         0,00476000 (-0.4%)
25      4000    0,00442800         0,00353300 (-20.2%)
100     1000    0,00478700         0,00366100 (-23.5%)
500     200     0,00973200         0,00649400 (-33.3%)
2500    40      0,03165200         0,02226700 (-29.7%)
8000    12      0,09315900         0,06674900 (-28.3%)

xvabsdp:
rept    loop    master             patch
8       12500   0,00475000         0,00474400 (-0.1%)
25      4000    0,00355600         0,00367500 (+3.3%)
100     1000    0,00444200         0,00366000 (-17.6%)
500     200     0,00942700         0,00732400 (-22.3%)
2500    40      0,02990000         0,02308500 (-22.8%)
8000    12      0,08770300         0,06683800 (-23.8%)

xvnabssp:
rept    loop    master             patch
8       12500   0,00494500         0,00492900 (-0.3%)
25      4000    0,00397700         0,00338600 (-14.9%)
100     1000    0,00421400         0,00353500 (-16.1%)
500     200     0,01048000         0,00707100 (-32.5%)
2500    40      0,03251500         0,02238300 (-31.2%)
8000    12      0,08889100         0,06469800 (-27.2%)

xvnabsdp:
rept    loop    master             patch
8       12500   0,00511000         0,00492700 (-3.6%)
25      4000    0,00398800         0,00381500 (-4.3%)
100     1000    0,00390500         0,00365900 (-6.3%)
500     200     0,00924800         0,00784600 (-15.2%)
2500    40      0,03138900         0,02391600 (-23.8%)
8000    12      0,09654200         0,05684600 (-41.1%)

xvnegsp:
rept    loop    master             patch
8       12500   0,00493900         0,00452800 (-8.3%)
25      4000    0,00369100         0,00366800 (-0.6%)
100     1000    0,00371100         0,00380000 (+2.4%)
500     200     0,00991100         0,00652300 (-34.2%)
2500    40      0,03025800         0,02422300 (-19.9%)
8000    12      0,09251100         0,06457600 (-30.2%)

xvnegdp:
rept    loop    master             patch
8       12500   0,00474900         0,00454400 (-4.3%)
25      4000    0,00353100         0,00325600 (-7.8%)
100     1000    0,00398600         0,00366800 (-8.0%)
500     200     0,01032300         0,00702400 (-32.0%)
2500    40      0,03125000         0,02422400 (-22.5%)
8000    12      0,09475100         0,06173000 (-34.9%)

This one to me seemed the opposite of the previous instructions, as it
looks like there was an improvement in the translation time (itself not
a surprise as operations were done twice before so there was the need to
translate twice as many TCGop)

Signed-off-by: Lucas Mateus Castro (alqotel) <lucas.araujo@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221019125040.48028-9-lucas.araujo@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>