config/s390/constraints.md

26 ;;    a -- Any address register from 1 to 15.
29 ;;    c -- Condition code register 33.
30 ;;    d -- Any register from 0 to 15.
43 ;;    N -- Multiple letter constraint followed by 4 parameter letters.
51 ;;         The constraint matches if the specified part of a constant
53 ;;         is specified instead of a part number, the constraint matches
55 ;;    O -- Multiple letter constraint followed by 1 parameter.
62 ;;    Q -- Memory reference without index register and with short displacement.
63 ;;    R -- Memory reference with index register and short displacement.
64 ;;    S -- Memory reference without index register but with long displacement.
65 ;;    T -- Memory reference with index register and long displacement.
66 ;;    A -- Multiple letter constraint followed by Q, R, S, or T:
68 ;;    B -- Multiple letter constraint followed by Q, R, S, or T:
74 ;;    ZQ -- Pointer without index register and with short displacement.
75 ;;    ZR -- Pointer with index register and short displacement.
76 ;;    ZS -- Pointer without index register but with long displacement.
77 ;;    ZT -- Pointer with index register and long displacement.
88   "Any address register from 1 to 15.")
93   "Condition code register 33")
98   "Any register from 0 to 15")
181 ;; take care of making sure we have a proper base register.
186 ;;    N -- Multiple letter constraint followed by 4 parameter letters.
192 ;;         The constraint matches if the specified part of a constant
194 ;;         is specified instead of a part number, the constraint matches
353    This constraint will only match if the machine provides
362    This constraint will only match if the machine provides
371    This constraint will only match if the machine provides
384   "Memory reference without index register and with short displacement"
389   "Memory reference with index register and short displacement"
394   "Memory reference without index register but with long displacement"
399   "Memory reference with index register and long displacement"
411 level.  This constraint will never be used and using it in an inline
414 constraint."
417 ; This defines 'm' as normal memory constraint.  This is only possible
418 ; since the standard memory constraint is re-defined in s390.h using
427    Offsettable memory reference without index register and with short displacement"
433    Offsettable memory reference with index register and short displacement"
439    Offsettable memory reference without index register but with long displacement"
445    Offsettable memory reference with index register and long displacement"
452    Memory reference without index register and with short
459    Memory reference with index register and short displacement that
466    Memory reference without index register but with long displacement
473    Memory reference with index register and long displacement that
488   "Pointer without index register and with short displacement."
492   "Pointer with index register and short displacement."
496   "Pointer without index register but with long displacement."
500   "Pointer with index register and long displacement."