Red Hat ENTERPRISE LINUX 4 Manual page 194

186
y
register (condition register)
CR
z
stack memory for FPR-GPR transfers
FPMEM
I
Signed 16-bit constant
J
Unsigned 16-bit constant shifted left 16 bits (use
K
Unsigned 16-bit constant
L
Signed 16-bit constant shifted left 16 bits
M
Constant larger than 31
N
Exact power of 2
O
Zero
P
Constant whose negation is a signed 16-bit constant
G
Floating point constant that can be loaded into a register with one instruction per word
Q
Memory operand that is an offset from a register (
R
AIX TOC entry
S
Constant suitable as a 64-bit mask operand
T
Constant suitable as a 32-bit mask operand
U
System V Release 4 small data area reference
Chapter 6. Extensions to the C Language Family
instead for
L
is preferable for
m
constants)
SImode
statements)
asm