[PATCH] Fix extract_range_from_cond (PR tree-optimization/19060)

[Vladimir Merzliakov]

Just for note 2 :)

I am run testcase at GCC 4.0.0 20050110 (experimental) without and with 
patch

Result diff:
                === libstdc++ Summary ===

-# of expected passes            3283
+# of expected passes            3336
-# of unexpected failures        67
+# of unexpected failures        15
# of unexpected successes       1
# of expected failures          5

Patch fix 52 tests at FreeBSD 5.3 + 1 new  test

>> 2005-01-07  Jakub Jelinek  <jakub@redhat.com>
>>
>> PR tree-optimization/19060
>> * tree-ssa-dom.c (extract_range_from_cond) <case LT_EXPR, GT_EXPR>:
>> Return 0 if op1 <= TYPE_MIN_VALUE () resp. op1 >= TYPE_MAX_VALUE ().
>> (simplify_cond_and_lookup_avail_expr): Add assert for dummy == 0
>> and handle extract_range_from_cond returning false.
>> * fold-const.c (fold): Optimize comparisons with min/max even for
>> width > HOST_BITS_PER_WIDE_INT.
>>
>> * gcc.c-torture/execute/20050104-1.c: New test.
>>