File:  [NetBSD Developer Wiki] / wikisrc / users / maya / vax-gcc.mdwn
Revision 1.1: download - view: text, annotated - select for diffs
Thu Aug 29 12:43:34 2019 UTC (2 years, 1 month ago) by maya
Branches: MAIN
CVS tags: HEAD
Add some local notes, to be expanded...

    1: # Various GCC/vax issues and invesigation #
    2: 
    3: # libgomp crash with -O2 #
    4: Repro:
    5: ````
    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: ````
   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: 
   23: It looks like a real bug in vax_legitimate_address_p not handling some addressing modes

CVSweb for NetBSD wikisrc <wikimaster@NetBSD.org> software: FreeBSD-CVSweb