Path: utzoo!telly!ddsw1!mcdchg!rutgers!mailrus!umix!b-tech!zeeff
From: zeeff@b-tech.ann-arbor.mi.us (Jon Zeeff)
Newsgroups: gnu.gcc.bug
Subject: '386 gcc bug for 1.28
Message-ID: <4871@b-tech.ann-arbor.mi.us>
Date: 16 Oct 88 15:46:12 GMT
Organization: Branch Technology, Ann Arbor, MI
Lines: 34

The following code produces an invalid instruction:


static unsigned short
newh(pred, foll)		/* new hash function */
	unsigned short  pred;	/* code for preceeding string */
	unsigned char   foll;	/* value of following char */
{
	return (((pred + foll) & 0xFFFF) * 15073) & 0xFFF; /* faster hash */
}

newh:
	pushl %ebp
	movl %esp,%ebp
	pushl %ebx
	movw 8(%ebp),%dx
	movw %dx,8(%ebp)
	movb 12(%ebp),%dl
	movb %dl,12(%ebp)
	movzbw 12(%ebp),%bx
	addw 8(%ebp),%bx
	imulw $15073,%bx   <- error
	andw $4095,%bx
	movzwl %bx,%eax
	jmp .L79
.L79:
	leal -4(%ebp),%esp
	popl %ebx
	leave
	ret
	.align 4
-- 
Jon Zeeff      			Branch Technology,
umix!b-tech!zeeff  		zeeff@b-tech.ann-arbor.mi.us