Power ISA™ Version 2.03 - Power.org

Version 2.03
Vector Compare Greater Than Unsigned
EVX-form
Vector Compare Less Than Signed
EVX-form
evcmpgtu
BF,RA,RB
evcmplts
BF,RA,RB
4 BF // RA RB 560
0 6 9 11 16 21 31
4 BF // RA RB 563
0 6 9 11 16 21 31
ah (RA) 0:31
al (RA) 32:63
bh (RB) 0:31
bl (RB) 32:63
if (ah > u bh) then ch 1
else ch 0
if (al > u bl) then cl 1
else cl 0
CR 4×BF+32:4×BF+35 ch || cl || (ch | cl) || (ch & cl)
The most significant bit in BF is set if the high-order element
of RA is greater than the high-order element of
RB; it is cleared otherwise. The next bit in BF is set if
the low-order element of RA is greater than the
low-order element of RB and cleared otherwise. The
last two bits of BF are set to the OR and AND of the
result of the compare of the high and low elements.
Special Registers Altered:
CR field BF
ah (RA) 0:31
al (RA) 32:63
bh (RB) 0:31
bl (RB) 32:63
if (ah < bh) then ch 1
else ch 0
if (al < bl) then cl 1
else cl 0
CR 4×BF+32:4×BF+35 ch || cl || (ch | cl) || (ch & cl)
The most significant bit in BF is set if the high-order element
of RA is less than the high-order element of RB; it
is cleared otherwise. The next bit in BF is set if the
low-order element of RA is less than the low-order element
of RB and cleared otherwise. The last two bits of
BF are set to the OR and AND of the result of the compare
of the high and low elements.
Special Registers Altered:
CR field BF
Vector Compare Less Than Unsigned
EVX-form
evcmpltu
BF,RA,RB
4 BF // RA RB 562
0 6 9 11 16 21 31
ah (RA) 0:31
al (RA) 32:63
bh (RB) 0:31
bl (RB) 32:63
if (ah < u bh) then ch 1
else ch 0
if (al < u bl) then cl 1
else cl 0
CR 4×BF+32:4×BF+35 ch || cl || (ch | cl) || (ch & cl)
The most significant bit in BF is set if the high-order element
of RA is less than the high-order element of RB; it
is cleared otherwise. The next bit in BF is set if the
low-order element of RA is less than the low-order element
of RB and cleared otherwise. The last two bits of
BF are set to the OR and AND of the result of the compare
of the high and low elements.
Special Registers Altered:
CR field BF
Chapter 6. Signal Processing Engine (SPE)
205