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Instr-op

Instr-op->rd

Get the rd field from a instr-op.

Signature
(instr-op->rd x) → rd
Arguments: x — Guard (instrp x).
Returns: rd — Type (ubyte5p rd).

This is an ordinary field accessor created by fty::defprod.

Definitions and Theorems

Function: instr-op->rd$inline

(defun instr-op->rd$inline (x)
  (declare (xargs :guard (instrp x)))
  (declare (xargs :guard (equal (instr-kind x) :op)))
  (mbe :logic
       (b* ((x (and (equal (instr-kind x) :op) x)))
         (ubyte5-fix (std::da-nth 1 (cdr x))))
       :exec (std::da-nth 1 (cdr x))))

Theorem: ubyte5p-of-instr-op->rd

(defthm ubyte5p-of-instr-op->rd
  (b* ((rd (instr-op->rd$inline x)))
    (ubyte5p rd))
  :rule-classes :rewrite)

Theorem: instr-op->rd$inline-of-instr-fix-x

(defthm instr-op->rd$inline-of-instr-fix-x
  (equal (instr-op->rd$inline (instr-fix x))
         (instr-op->rd$inline x)))

Theorem: instr-op->rd$inline-instr-equiv-congruence-on-x

(defthm instr-op->rd$inline-instr-equiv-congruence-on-x
  (implies (instr-equiv x x-equiv)
           (equal (instr-op->rd$inline x)
                  (instr-op->rd$inline x-equiv)))
  :rule-classes :congruence)

Theorem: instr-op->rd-when-wrong-kind

(defthm instr-op->rd-when-wrong-kind
  (implies (not (equal (instr-kind x) :op))
           (equal (instr-op->rd x)
                  (ubyte5-fix nil))))