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- Log ----------------------------------------------------------------- commit 40aa2475c25a2715e100bbde7ba7db437a8a4326 Author: Raymond Toy toy.raymond@gmail.com Date: Thu Oct 17 20:32:52 2013 -0700

Delete assembly routines for multiplication and truncation. I think these were needed for sparc v7 and earlier which didn't have a multiply or divide instruction (multiply step, and divide step). We don't support v7 anymore so the existing vops for multiplication and division work just fine.

diff --git a/src/assembly/sparc/arith.lisp b/src/assembly/sparc/arith.lisp index 2ebb72f..a49b1c1 100644 --- a/src/assembly/sparc/arith.lisp +++ b/src/assembly/sparc/arith.lisp @@ -210,192 +210,6 @@ LOW-FITS-IN-FIXNUM (move res lo))

-(macrolet - ((frob (name note cost type sc) - `(define-assembly-routine (,name - (:note ,note) - (:cost ,cost) - (:translate *) - (:policy :fast-safe) - (:arg-types ,type ,type) - (:result-types ,type)) - ((:arg x ,sc nl0-offset) - (:arg y ,sc nl1-offset) - (:res res ,sc nl0-offset) - (:temp temp ,sc nl2-offset)) - ,@(when (eq type 'tagged-num) - `((inst sra x 2))) - (cond ((backend-featurep :sparc-64) - ;; Sign extend, then multiply - (inst sra x 0) - (inst sra y 0) - (inst mulx res x y)) - ((or (backend-featurep :sparc-v8) - (backend-featurep :sparc-v9)) - (inst smul res x y)) - (t - (inst wry x) - (inst andcc temp zero-tn) - (inst nop) - (inst nop) - (dotimes (i 32) - (inst mulscc temp y)) - (inst mulscc temp zero-tn) - (inst rdy res)))))) - (frob unsigned-* "unsigned *" 40 unsigned-num unsigned-reg) - (frob signed-* "unsigned *" 41 signed-num signed-reg) - (frob fixnum-* "fixnum *" 30 tagged-num any-reg)) - - - -;;;; Division. - -#+assembler -(defun emit-divide-loop (divisor rem quo tagged) - (inst li quo 0) - (labels - ((do-loop (depth) - (cond - ((zerop depth) - (inst unimp 0)) - (t - (let ((label-1 (gen-label)) - (label-2 (gen-label))) - (inst cmp divisor rem) - (inst b :geu label-1) - (inst nop) - (inst sll divisor 1) - (do-loop (1- depth)) - (inst srl divisor 1) - (inst cmp divisor rem) - (emit-label label-1) - (inst b :gtu label-2) - (inst sll quo 1) - (inst add quo (if tagged (fixnumize 1) 1)) - (inst sub rem divisor) - (emit-label label-2)))))) - (do-loop (if tagged 30 32)))) - -(define-assembly-routine (positive-fixnum-truncate - (:note "unsigned fixnum truncate") - (:cost 45) - (:translate truncate) - (:policy :fast-safe) - (:arg-types positive-fixnum positive-fixnum) - (:result-types positive-fixnum positive-fixnum)) - ((:arg dividend any-reg nl0-offset) - (:arg divisor any-reg nl1-offset) - - (:res quo any-reg nl2-offset) - (:res rem any-reg nl0-offset)) - - (let ((error (generate-error-code nil division-by-zero-error - dividend divisor))) - (inst cmp divisor) - (inst b :eq error)) - - (move rem dividend) - (emit-divide-loop divisor rem quo t)) - - -(define-assembly-routine (fixnum-truncate - (:note "fixnum truncate") - (:cost 50) - (:policy :fast-safe) - (:translate truncate) - (:arg-types tagged-num tagged-num) - (:result-types tagged-num tagged-num)) - ((:arg dividend any-reg nl0-offset) - (:arg divisor any-reg nl1-offset) - - (:res quo any-reg nl2-offset) - (:res rem any-reg nl0-offset) - - (:temp quo-sign any-reg nl5-offset) - (:temp rem-sign any-reg nargs-offset)) - - (let ((error (generate-error-code nil division-by-zero-error - dividend divisor))) - (inst cmp divisor) - (inst b :eq error)) - - (inst xor quo-sign dividend divisor) - (inst move rem-sign dividend) - (let ((label (gen-label))) - (inst cmp dividend) - (inst ba :lt label) - (inst neg dividend) - (emit-label label)) - (let ((label (gen-label))) - (inst cmp divisor) - (inst ba :lt label) - (inst neg divisor) - (emit-label label)) - (move rem dividend) - (emit-divide-loop divisor rem quo t) - (let ((label (gen-label))) - ;; If the quo-sign is negative, we need to negate quo. - (inst cmp quo-sign) - (inst ba :lt label) - (inst neg quo) - (emit-label label)) - (let ((label (gen-label))) - ;; If the rem-sign is negative, we need to negate rem. - (inst cmp rem-sign) - (inst ba :lt label) - (inst neg rem) - (emit-label label))) - - -(define-assembly-routine (signed-truncate - (:note "(signed-byte 32) truncate") - (:cost 60) - (:policy :fast-safe) - (:translate truncate) - (:arg-types signed-num signed-num) - (:result-types signed-num signed-num)) - - ((:arg dividend signed-reg nl0-offset) - (:arg divisor signed-reg nl1-offset) - - (:res quo signed-reg nl2-offset) - (:res rem signed-reg nl0-offset) - - (:temp quo-sign signed-reg nl5-offset) - (:temp rem-sign signed-reg nargs-offset)) - - (let ((error (generate-error-code nil division-by-zero-error - dividend divisor))) - (inst cmp divisor) - (inst b :eq error)) - - (inst xor quo-sign dividend divisor) - (inst move rem-sign dividend) - (let ((label (gen-label))) - (inst cmp dividend) - (inst ba :lt label) - (inst neg dividend) - (emit-label label)) - (let ((label (gen-label))) - (inst cmp divisor) - (inst ba :lt label) - (inst neg divisor) - (emit-label label)) - (move rem dividend) - (emit-divide-loop divisor rem quo nil) - (let ((label (gen-label))) - ;; If the quo-sign is negative, we need to negate quo. - (inst cmp quo-sign) - (inst ba :lt label) - (inst neg quo) - (emit-label label)) - (let ((label (gen-label))) - ;; If the rem-sign is negative, we need to negate rem. - (inst cmp rem-sign) - (inst ba :lt label) - (inst neg rem) - (emit-label label))) -  ;;;; Comparison

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Summary of changes: src/assembly/sparc/arith.lisp | 186 ----------------------------------------- 1 file changed, 186 deletions(-)

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