Variable Shift Opcode 7 2-Bit Opcode Extensions - Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS MANUAL VOLUME 3 REV 2.3 Manual

Table 4-20.
Opcode
Bits
40:37
7
4.3.1.1 Multimedia Multiply and Shift
40
I1
Instruction
pmpyshr2
pmpyshr2.u
3:312

Variable Shift Opcode 7 2-bit Opcode Extensions

z z v x x
a b e 2a 2b
Bit Bit Bit Bits Bits
36 33 32 35:34 29:28
0
1
0
2
3
0
1
1
2
3
1 1 0
0
1
2
2
3
0
1
3
2
3
37 36 35 34 33 32 31 30 29 28 27 26
7 z x z v ct x
a 2a b e 2d 2b
4 1 2 1 1 2 2
Operands
r = r , r , count
1 2 3 2
0
shr.u – var I5 shl – var
shr – var I5
20 19
r r
3 2
1 7 7
Opcode
z
a
7 0
x
2c
Bits 31:30
1 2
I7
13 12 6 5
r
1
7
Extension
z v x x
b e 2a
1 0 0
Volume 3: Instruction Formats
3
0
qp
6
2b
3
1