From: Kazu Hirata <kazu@hxi.com>
Date: Sat, 20 Apr 2002 20:21:35 +0000 (+0000)
Subject: lib1funcs.asm (___mulsi3): Remove unnecessary push and pop.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=26b298848293b4bc22eedeec96240509b77a31c9;p=gcc.git

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

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

From-SVN: r52559
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 63fd6350be4..636536f3d9f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -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
diff --git a/gcc/config/h8300/lib1funcs.asm b/gcc/config/h8300/lib1funcs.asm
index 0fbeacd0ed0..9ac8c1bf218 100644
--- a/gcc/config/h8300/lib1funcs.asm
+++ b/gcc/config/h8300/lib1funcs.asm
@@ -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