Specifications

cmpgei
Instruction compare greater than or equal signed immediate
Operation
if ((signed) rA >= (signed) σ(IMM16))
then rB ← 1
else rB ← 0
Assembler Syntax
cmpgei rB, rA, IMM16
Example
cmpgei r6, r7, 100
Description
Sign-extends the 16-bit immediate value IMM16 to 32 bits and
compares it to the value of rA. If rA >= σ(IMM16), then
cmpgei stores 1 to rB; otherwise stores 0 to rB.
Usage
cmpgei performs the signed >= operation of the C program‐
ming language.
Exceptions
None
Instruction Type
R
Instruction Fields
A = Register index of operand rA
B = Register index of operand rB
IMM16 = 16-bit signed immediate value
Bit Fields
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
A B IMM16
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
IMM16 0x08
cmpgeu
Instruction
compare greater than or equal unsigned
Operation
if ((unsigned) rA >= (unsigned) rB)
then rC ← 1
else rC ← 0
Assembler Syntax
cmpgeu rC, rA, rB
Example
cmpgeu r6, r7, r8
8-24
cmpgei
NII51017
2015.04.02
Altera Corporation
Instruction Set Reference
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