[Bug c/13122] New: h8300 - local variable gets corrupted by function call when -fomit-frame-pointer is given

["dhananjayd at kpitcummins dot com" <gcc-bugzilla at gcc dot gnu dot org>]

Try compiling code below with

h8300-coff-gcc -fomit-frame-pointer -mh -mn bug.c

==================================================
void foo(int a, int b, int c, int d)
{
}
void bar ( char a, char b )
{
}
void main(void)
{
        char a ;
        foo(1,2,3,4);
        a = 10;
        bar(a, 1);
        printf("a=%d\n", a);
}
==================================================

h8300-hms-run a.out prints
a=244

If you see the generated assembly, variable a is accessed using -ve offset from 
SP. It should be +ve offset.

    mov.b   r2l,@(-1,er7)   ;#  a

The problem doesn't appear if line calling function foo() is commented.
I think this is related to INITIAL_ELIMINATION_OFFSET.

-Dhananjay

-- 
           Summary: h8300 - local variable gets corrupted by function call
                    when -fomit-frame-pointer is given
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dhananjayd at kpitcummins dot com
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: h8300-unknown-hms


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13122