Integer Compare Instructions; Integer Logical Instructions - IBM PowerPC 604 User Manual

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2.3.4.1.2 Integer Compare Instructions
The integer compare instructions algebraically or logically compare the contents of register
rA with either the zero-extended value of the UIMM operand, the sign-extended value of
the SIMM operand, or the contents of register rB. The comparison is signed for the cmpi
and cmp instructions, and unsigned for the cmpli and cmpl instructions. Table 2-10
summarizes the integer compare instructions.
Table 2-10. Integer Compare Instructions
Name
Mnemonic Operand Syntax
Compare Immediate cmpl crfD,L,rA,SIMM
Compare
cmp crfD,L,rA,rB
Compare Logical Immediate cmpll crfD,L,rA,UIMM
Compare Logical cmpl crfD,L,rA,rB
The crtD operand can be omitted if the result of the comparison is to be placed in CRO.
Otherwise the target CR field must be specified in the instruction crtD field, using an
explicit field number.
For information on simplified mnemonics for the integer compare instructions see
Appendix F, "Simplified Mnemonics," in
The Programming Environments Manual.
2.3.4.1.3 Integer Logical Instructions
The logical instructions shown in Table 2-11 perform bit-parallel operations on the
specified operands. Logical instructions with the CR updating enabled (uses dot suffix) and
instructions andi. and andis. set CR field CRO to characterize the result of the logical
operation. Logical instructions do not affect the XER[SO], XER[OV], and XER[CA] bits.
See Appendix F, "Simplified Mnemonics," in
The Programming Environments Manual
for
simplified mnemonic examples for integer logical operations.
Table 2-11. Integer Logical Instructions
Name Mnemonic
Operand
syntax
AND Immediate and I. rA,rS,UIMM
AND Immediate Shifted and ls. rA,rS,UIMM
OR Immediate
Ori
rA,rS,UIMM
OR Immediate Shifted
orls
rA,rS,UIMM
XOR Immediate xorl rA,rS,UIMM
XOR Immediate Shifted xorls rA,rS,UIMM
AND
and (and.)
rA,rS,rB
OR or (or.) rA,rS,rB
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