Mainline broken on alpha and x86-64. SPEC2000's eon does notbuild.

[Diego Novillo]

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.


Thanks.  Diego.
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