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lib1funcs.asm (___mulsi3): Remove unnecessary push and pop.

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* config/h8300/lib1funcs.asm (___mulsi3): Remove unnecessary
	push and pop.  Replace add.l with add.w.

From-SVN: r52559
This commit is contained in:
Kazu Hirata 2002-04-20 20:21:35 +00:00 • committed by Kazu Hirata
parent 59184677f4
commit 26b2988482
2 changed files with 10 additions and 12 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-04-20 Kazu Hirata <kazu@hxi.com>
* config/h8300/lib1funcs.asm (___mulsi3): Remove unnecessary
push and pop. Replace add.l with add.w.
2002-04-20 Toshiyasu Morita <toshiyasu.morita@hsa.hitachi.com>
* config/h8300/lib1funcs.asm (___mulsi3): Use hardware

17
gcc/config/h8300/lib1funcs.asm
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@ -742,36 +742,29 @@ _done:
;
; New code:
;
; 16b * 16b = 68 states
; 16b * 32b = 96 states
; 32b * 32b = 124 states
; 16b * 16b = 48 states
; 16b * 32b = 72 states
; 32b * 32b = 92 states
;
.global ___mulsi3
___mulsi3:
push.l er3 ; (10 states)
mov.w r1,r2 ; ( 2 states) b * d
mulxu r0,er2 ; (22 states)
mov.w e0,r3 ; ( 2 states) a * d
beq L_skip1 ; ( 4 states)
mulxu r1,er3 ; (22 states)
mov.w r3,e3 ; ( 2 states)
mov.w #0,r3 ; ( 2 states)
add.l er3,er2 ; ( 2 states)
add.w r3,e2 ; ( 2 states)
L_skip1:
mov.w e1,r3 ; ( 2 states) c * b
beq L_skip2 ; ( 4 states)
mulxu r0,er3 ; (22 states)
mov.w r3,e3 ; ( 2 states)
mov.w #0,r3 ; ( 2 states)
add.l er3,er2 ; ( 2 states)
add.w r3,e2 ; ( 2 states)
L_skip2:
mov.l er2,er0 ; ( 2 states)
pop.l er3 ; (10 states)
rts ; (10 states)
#endif