egcs check-gcc results on mips-sgi-irix5.3 (970825 snapshot)

[scott snyder <snyder@d0sgif.fnal.gov>]

hi -

Here are results from running the gcc.c-torture suite on the 970825
snapshot on a mips-sgi-irix5.3 target.

                === gcc Summary ===

# of expected passes            4874
# of unexpected failures        5
# of expected failures          4
# of unsupported tests          7


Here are the unexpected failures:


FAIL: gcc.c-torture/compile/961203-1.c,  -O0  
FAIL: gcc.c-torture/compile/961203-1.c,  -O1  
FAIL: gcc.c-torture/compile/961203-1.c,  -O2  
FAIL: gcc.c-torture/compile/961203-1.c,  -O2 -fomit-frame-pointer -finline-functions  

-- 961203-1.c ---------------------------------------------------------------
struct s {
  char a[0x32100000];
  int x:30, y:30;
};

int
main ()
{
  struct s* p;

  p = (struct s*) 0;
  if (p->x == p->y)
    exit (1);
}

-----------------------------------------------------------------------------

These apparently fails due to running out of VM on the system
(there was about ~70M of free swap space when i ran this).


FAIL: gcc.c-torture/execute/921117-1.c execution,  -O2 -fomit-frame-pointer -finline-functions 

-- 921117-1.c ---------------------------------------------------------------
struct s {
  char text[11];
  int flag;
} cell;

int
check (struct s p)
{
  if (p.flag != 99)
    return 1;
  return strcmp (p.text, "0123456789");
}

main ()
{
  cell.flag = 99;
  strcpy (cell.text, "0123456789");

  if (check (cell))
    abort();
  exit (0);
}
-----------------------------------------------------------------------------


When i compile this by hand with the above options, it does indeed abort.
Here is the generated code.  It looks like it goofs up when copying
the structure as part of setting up for the call to check().  I've
marked that sequence below.

Compiled with:
gcc -O2 -finline-functions -fomit-frame-pointer -S 921117-1.c


	.file	1 "921117-1.c"
	.option pic2

 # -G value = 0, Cpu = 3000, ISA = 1
 # GNU C version egcs-2.90.02 970825 (gcc2-970802 experimental) (mips-sgi-irix5.3) compiled by GNU C version egcs-2.90.02 970825 (gcc2-970802 experimental).
 # options passed:  -O2 -finline-functions -fomit-frame-pointer
 # options enabled:  -fdefer-pop -fomit-frame-pointer -fcse-follow-jumps
 # -fcse-skip-blocks -fexpensive-optimizations -fthread-jumps
 # -fstrength-reduce -fpeephole -fforce-mem -ffunction-cse
 # -finline-functions -finline -fkeep-static-consts -fcaller-saves
 # -fpcc-struct-return -fdelayed-branch -frerun-cse-after-loop
 # -fschedule-insns -fschedule-insns2 -fpic -fexceptions -fsjlj-exceptions
 # -fcommon -fverbose-asm -fregmove -falias-check -fargument-alias -mgas
 # -mabicalls -meb -mcpu=3000

gcc2_compiled.:
__gnu_compiled_c:
	.rdata
	.align	2
$LC0:

	.byte	0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37
	.byte	0x38,0x39,0x0
	.text
	.align	2
	.globl	check
	.ent	check
check:
	.frame	$sp,32,$31		# vars= 0, regs= 2/0, args= 16, extra= 8
	.mask	0x90000000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.cpload	$25
	.set	reorder
	subu	$sp,$sp,32
	.cprestore 16
	li	$2,99			# 0x00000063
	sw	$31,28($sp)
	sw	$28,24($sp)
	sw	$4,32($sp)
	sw	$5,36($sp)
	sw	$6,40($sp)
	.set	noreorder
	.set	nomacro
	bne	$7,$2,$L4
	sw	$7,44($sp)
	.set	macro
	.set	reorder

	addu	$4,$sp,32
	la	$5,$LC0
	la	$25,strcmp
	jal	$31,$25
	j	$L5
$L4:
	li	$2,1			# 0x00000001
$L5:
	lw	$31,28($sp)
	#nop
	.set	noreorder
	.set	nomacro
	j	$31
	addu	$sp,$sp,32
	.set	macro
	.set	reorder

	.end	check
	.align	2
	.globl	main
	.ent	main
main:
	.frame	$sp,48,$31		# vars= 16, regs= 2/0, args= 16, extra= 8
	.mask	0x90000000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.cpload	$25
	.set	reorder
	subu	$sp,$sp,48
	.cprestore 16
	la	$2,cell+12
	li	$3,99			# 0x00000063
	la	$8,$LC0
	sw	$31,44($sp)
	sw	$28,40($sp)
	sw	$3,0($2)
	lw	$4,0($8)
	lw	$5,4($8)
	lh	$6,8($8)
	lb	$7,10($8)
	sw	$4,-12($2)
	sw	$5,-8($2)
	sh	$6,-4($2)
	sb	$7,-2($2)
	lw	$2,0($8)   #<-- should be based at cell, not $8.
	lw	$4,4($8)
	lw	$5,8($8)
	lw	$6,12($8)
	sw	$2,24($sp)
	sw	$4,28($sp)
	sw	$5,32($sp)
	sw	$6,36($sp)
	lw	$2,36($sp)
	#nop
	.set	noreorder
	.set	nomacro
	beq	$2,$3,$L13
	addu	$4,$sp,24
	.set	macro
	.set	reorder

	.set	noreorder
	.set	nomacro
	j	$L12
	li	$2,1			# 0x00000001
	.set	macro
	.set	reorder

$L13:
	move	$5,$8
	la	$25,strcmp
	jal	$31,$25
$L12:
	.set	noreorder
	.set	nomacro
	beq	$2,$0,$L11
	move	$4,$0
	.set	macro
	.set	reorder

	la	$25,abort
	jal	$31,$25
$L11:
	la	$25,exit
	jal	$31,$25
	.end	main

	.comm	cell,16

	.globl exit .text
	.globl abort .text
	.globl strcpy .text
	.globl strcmp .text