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Annotation of wikisrc/users/maya/vax-gcc.mdwn, revision 1.2

1.1       maya        1: # Various GCC/vax issues and invesigation #
                      2: 
                      3: # libgomp crash with -O2 #
                      4: Repro:
                      5: 
1.2     ! maya        6:     #!/bin/sh
        !             7:     
        !             8:     cat << EOF > oacc.i
        !             9:     int a, b;
        !            10:     int e() {
        !            11:       short *c = 0;
        !            12:       char d = c[a + 1];
        !            13:       b = d;
        !            14:       a += 2;
        !            15:     }
        !            16:     EOF
        !            17:     vax--netbsdelf-gcc -O2 -c oacc.i
        !            18: 
1.1       maya       19: Asserts at emit-rtl.c:2310 gcc_assert (memory_address_addr_space_p (mode, addr, as));
                     20: 
                     21: NetBSD avoids it with a local diff to reload.c/dse.c.
                     22: 
1.2     ! maya       23: It looks like a real bug in vax_legitimate_address_p not handling some addressing modes.
        !            24: 
        !            25: The code to handle offset(reg)[index] might be off: it doesn't like if neither xfoo0, xfoo1 are constant.