Ada bootstrap broken on x86 and x86_64

[Jan Hubicka]

> Different failures, my last successful builds where on thursday.
> 
> Laurent
> 
> LAST_UPDATED Mon Sep  6 20:02:44 UTC 2004
> 
> On x86 in stage2:
> 
> <<
> stage1/xgcc -Bstage1/ -B/home/guerby/work/gcc/install/install-20040906T220450/i686-pc-linux-gnu/bin/ -c -g -O2      -gnatpg -gnata -g -O1 -fno-inline \
>  -I- -I. -Iada -I/home/guerby/work/gcc/version-head/gcc/ada /home/guerby/work/gcc/version-head/gcc/ada/a-except.adb -o ada/a-except.o
> +===========================GNAT BUG DETECTED==============================+
> | 3.5.0 20040906 (experimental) (i686-pc-linux-gnu) GCC error:             |
> | in peel_address, at tree-ssa-loop-ivopts.c:2562                          |
> | Error detected at a-exexda.adb:312:8                                     |
> >>

Actually I don't think I can build Ada myself with current tree so I
need help.

This bug should be trivial to fix: Ada is apparently using construct
tree-ssa-loop-ivopts.c, so I just need to know output of
p debug_tree (addr) on the function calling abort and I will add it to
the list.

Honza
> 
> On x86_64 when building the Ada RTS:
> 
> <<
> ../../xgcc -B../../ -c -g -O2 -fPIC      -W -Wall -gnatpg  a-calend.adb -o a-calend.o
> a-calend.adb: In function `Ada.Calendar.Split':
> a-calend.adb:262: error: Definition in block 12 does not dominate use in block 3
> for SSA_NAME: T.184<D887>_103
> in statement:
> T.192<D895>_113 = T.184<D887>_103 /[fl] 1767225600000000000;
> 
> +===========================GNAT BUG DETECTED==============================+
> | 3.5.0 20040906 (experimental) (x86_64-unknown-linux-gnu) GCC error:      |
> | verify_ssa failed.                                                       |
> | Error detected at a-calend.adb:487:1                                     |
> >>