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* config/h8300/h8300.md (a peephole2): Tighten the condition.

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From-SVN: r65174
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Kazu Hirata 2003-04-02 21:43:35 +00:00 committed by Kazu Hirata
parent 496e1c4bdf
commit 8fc9a7ba7b
2 changed files with 15 additions and 3 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2003-04-02 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.md (a peephole2): Tighten the condition.
2003-04-02 Richard Henderson <rth@redhat.com>
* longlong.h (umul_ppmm) [alpha]: Use __builtin_alpha_umulh.

14
gcc/config/h8300/h8300.md
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@ -4308,7 +4308,16 @@
gen_rtx_EQ (VOIDmode, cc0_rtx, const0_rtx));
operands[5] = GEN_INT (exact_log2 (INTVAL (operands[1]) + 1));")
;; Transform A <= 1 to (A & 0xfffffffe) == 0.
;; Transform
;;
;; cmp.l #15,er0
;; bhi .L1
;;
;; into
;;
;; and #240,r0l
;; mov.l er0,er0
;; bne .L1
(define_peephole2
[(set (cc0)
@ -4321,8 +4330,7 @@
(pc)))]
"(TARGET_H8300H || TARGET_H8300S)
&& peep2_reg_dead_p (1, operands[0])
&& (INTVAL (operands[1]) == 1
|| INTVAL (operands[1]) == 3
&& ((TARGET_H8300H && INTVAL (operands[1]) == 3)
|| INTVAL (operands[1]) == 7
|| INTVAL (operands[1]) == 15
|| INTVAL (operands[1]) == 31