Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!UX.ACSS.UMN.EDU!m4
From: m4@UX.ACSS.UMN.EDU
Newsgroups: gnu.gcc.bug
Subject: Sun 3, gcc-1.36, (doprnt.c from tahoe library)
Message-ID: <8912050439.AA17754@life.ai.mit.edu>
Date: 5 Dec 89 04:39:57 GMT
Sender: daemon@tut.cis.ohio-state.edu
Distribution: gnu
Organization: GNUs Not Usenet
Lines: 50

On a Sun3, using gcc version 1.36, notice the generated "movel d0,sp"!!!

gcc -ffixed-a2 -ffixed-a3 -ffixed-a4 -ffixed-a5 -ffixed-d3 -S A.c
------ file A.c ------
typedef	unsigned char	u_char;
typedef char *va_list;
# define va_arg(list,mode) ((mode *)(list += sizeof(mode)))[-1]
extern struct _iobuf { int _cnt; unsigned char *_ptr; unsigned char *_base;
	int _bufsiz; short _flag; char _file;
} _iob[];

_doprnt(fmt0, argp, fp)
u_char *fmt0;
va_list argp;
struct _iobuf *fp;
{
    double _double;

    _double = va_arg(argp, double);
    _double = -_double;
}
------ file A.s --------
#NO_APP
gcc_compiled.:
.text
	.even
.globl __doprnt
__doprnt:
	link a6,#-12
	movel a6@(12),d0
	addql #8,d0
	movel d0,a6@(-12)
	movel a6@(-12),a6@(12)
	movel d0,sp				| WOW!!!!!
	movel sp@(-8),a0
	movel sp@(-4),a1
	movel a0,a6@(-8)
	movel a1,a6@(-4)
	movel #___negdf2,d0
	movel a6@(-4),sp@-
	movel a6@(-8),sp@-
	jbsr ___negdf2
	addqw #8,sp
	movel d0,d0
	movel d1,d1
	movel d0,a6@(-8)
	movel d1,a6@(-4)
L1:
	unlk a6
	rts