Bug#212902: gcc-3.3: gcc generates illegal intermediate assembly file: invalid character '=' in operand 1

[Alex Tsariounov <alext@fc.hp.com>]

Package: gcc-3.3
Version: 1:3.3.2-0pre4
Severity: normal


When compiling the attached code on i386, the compilers seems to
generate an illegal intermediate assembly file that fails to assemble
with following messages:

[type2:lttk]$ gcc -o syscall_time syscall_time.c
/tmp/cc3VnwUh.s: Assembler messages:
/tmp/cc3VnwUh.s:118: Error: invalid character '=' in operand 1
/tmp/cc3VnwUh.s:126: Error: invalid character '=' in operand 1
/tmp/cc3VnwUh.s:201: Error: invalid character '=' in operand 1
/tmp/cc3VnwUh.s:211: Error: invalid character '=' in operand 1
/tmp/cc3VnwUh.s:293: Error: invalid character '=' in operand 1
/tmp/cc3VnwUh.s:303: Error: invalid character '=' in operand 1
[type2:lttk]$ 

Thanks,
Alex Tsariounov

-- System Information:
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux type2 2.4.21-4-686-smp #1 SMP Sun Aug 3 00:31:17 EST 2003 i686
Locale: LANG=C, LC_CTYPE=C

Versions of packages gcc-3.3 depends on:
ii  binutils                   2.14.90.0.6-3 The GNU assembler, linker and bina
ii  cpp-3.3                    1:3.3.2-0pre4 The GNU C preprocessor
ii  gcc-3.3-base               1:3.3.2-0pre4 The GNU Compiler Collection (base 
ii  libc6                      2.3.2-8       GNU C Library: Shared libraries an
ii  libgcc1                    1:3.3.2-0pre4 GCC support library

-- no debconf information

#include <stdlib.h>
#include <stdio.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#define mTICKNOW(T) __asm__ __volatile__("mov %0=ar.itc" : "=r"(T) :: "memory");


int
main(int argc, char *argv[])
{
	unsigned long ii, jj, times, groups;
	long diff;
	double realtotal;
	unsigned long tick1, tick2, total;
	struct timeval tv;
	int fh;
	char buf[4096];
	double mhz;
	FILE *fp;

	if (argc>1) 
		times = atoi(argv[1]);
	else
		times = 100;

	if (argc>2)
		groups = atoi(argv[2]);
	else
		groups = 3;

	/* Get processor speed from /proc/cpuinfo */
	fp=fopen("/proc/cpuinfo", "r");
	if (!fp) exit(1);
	while (fgets(buf, 80, fp)) {
		if (strstr(buf, "cpu MHz")) {
			jj= sscanf(buf, "cpu MHz : %lf", &mhz);
			if (jj != 1) exit(1);
			break;
		}
	}
	if (jj!=1) exit(1);

	/*
	 * gettimeofday() syscall
	 */
	realtotal = 0.0;
	total = 0;
	for (jj=0; jj<groups; jj++) {
		for (ii=0; ii<times; ii++) {
			mTICKNOW(tick1);

			gettimeofday(&tv, 0);

			mTICKNOW(tick2);

			total += (tick2 - tick1);
		}
		realtotal += ((double)total / times);
		total = 0;
		usleep(1000);
	}

	printf("Average call to gettimeofday(%d) lasts: %lf us\n",
		ii*groups, (realtotal/groups)/mhz);

	/*
	 * read() syscall 
	 */
	realtotal = 0.0;
	total = 0;
	fh = open(argv[0], O_RDONLY);
	for (jj=0; jj<groups; jj++) {
		for (ii=0; ii<times; ii++) {
			mTICKNOW(tick1);

			read(fh, buf, 4096);

			mTICKNOW(tick2);

			total += (tick2 - tick1);

			lseek(fh, 0, SEEK_SET);
		}
		realtotal += ((double)total / times);
		total = 0;
		usleep(1000);
	}
	close(fh);
	
	printf("Average call to         read(%d) lasts: %lf us\n",
		ii*groups, (realtotal/groups)/mhz);
	
	/*
	 * write() syscall  (at end of syscall table)
	 */
	realtotal = 0.0;
	total = 0;
	fh = open("/tmp/xxx_tmp_syscall_test_xxx", (O_CREAT|O_RDWR), 0644);
	for (jj=0; jj<groups; jj++) {
		for (ii=0; ii<times; ii++) {
			mTICKNOW(tick1);

			write(fh, buf, 4096);

			mTICKNOW(tick2);

			total += (tick2 - tick1);

			lseek(fh, 0, SEEK_SET);
		}
		realtotal += ((double)total / times);
		total = 0;
		usleep(1000);
	}
	close(fh);


	printf("Average call to        write(%d) lasts: %lf us\n",
		ii*groups, (realtotal/groups)/mhz);
}