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


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.




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