Mainline broken on alpha and x86-64. SPEC2000's eon does not build.

[Jan Hubicka]

> 
> One of the attached patches broke mainline bootstraps on alpha and
> x86-64.  We fail to build libjava with:
> 
> /home/cygnus/dnovillo/perf/sbox/gcc/local.x86_64/src/libjava/javax/swing/JWindow.java: In class `javax.swing.JWindow':
> /home/cygnus/dnovillo/perf/sbox/gcc/local.x86_64/src/libjava/javax/swing/JWindow.java: In constructor `()':
> /home/cygnus/dnovillo/perf/sbox/gcc/local.x86_64/src/libjava/javax/swing/JWindow.java:83: error: Can't access package-private constructor `java.awt.Window.<init>' from `javax.swing.JWindow'.
>                 super();
>                 ^
> 
> We also fail to build 252.eon at -O3.  We die with a segmentation fault
> in tree-cfg.c:find_taken_edge
> 
> Program received signal SIGSEGV, Segmentation fault.
> tree_int_cst_lt (t1=0x0, t2=0xb3391858)
>     at /home/cygnus/dnovillo/perf/sbox/gcc/local.i686/src/gcc/tree.c:3497
> 3497      if (TYPE_UNSIGNED (TREE_TYPE (t1)) != TYPE_UNSIGNED (TREE_TYPE (t2)))
> (gdb) up
> #1  0x0833abce in tree_int_cst_compare (t1=0x0, t2=0xb3391858)
>     at /home/cygnus/dnovillo/perf/sbox/gcc/local.i686/src/gcc/tree.c:3521
> 3521      if (tree_int_cst_lt (t1, t2))
> (gdb) up
> #2  0x080f6431 in find_taken_edge (bb=0xb37b9e0c, val=0xb3391858)
>     at /home/cygnus/dnovillo/perf/sbox/gcc/local.i686/src/gcc/tree-cfg.c:2052
> 2052          cmp = tree_int_cst_compare (CASE_LOW (t), val);
> 
> 
> Steven, this failure seems related to your changes.  I will send you a
> .ii file in a separate message.

I am seeing same failure on i686 and ia64 testers too, but not on my
home machine, so it is not architeture related, but something else.
I am checking if reverting of my ehreturn patch fixes it (it has been
bootstrapped about week and half ago, so things might have changed)

Honza
> 
> 
> Thanks.  Diego.