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Subject: [Bug tree-optimization/30911] VRP fails to eliminate range checks in Ada code
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------- Comment #32 from rguenth at gcc dot gnu dot org  2007-02-23 22:40 -------
Created an attachment (id=13103)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13103&action=view)
patch

Bah - now with the errors fixed.  Bootstraps ok, some of acats regresses.

If you disable bootstrap and run the testsuite you get
FAIL:   c340001
FAIL:   c35507j
FAIL:   c390001
FAIL:   c390005
FAIL:   c390006
FAIL:   c390a01
FAIL:   c390a02
FAIL:   c390a03
FAIL:   c954012
FAIL:   c96005a
FAIL:   c96005d
FAIL:   c96005f
FAIL:   c96006a
FAIL:   c96007a
FAIL:   c96008a
FAIL:   c96008b
FAIL:   c974002
FAIL:   cc51007
FAIL:   cd92001
FAIL:   ce3305a
FAIL:   ce3402c
FAIL:   ce3405a
FAIL:   ce3405d
FAIL:   ce3409c
FAIL:   ce3410c
FAIL:   ce3602a
FAIL:   ce3605d
FAIL:   ce3605e
FAIL:   ce3606a
FAIL:   ce3606b
FAIL:   ce3706f
FAIL:   ce3806e
FAIL:   ce3806h
FAIL:   ce3906a
FAIL:   ce3906e
FAIL:   ce3906f
FAIL:   cxh1001
FAIL:   ee3203a
FAIL:   ee3402b

Most of the are either
raised CONSTRAINT_ERROR : a-calend.adb:440 explicit raise
or
raised CONSTRAINT_ERROR : a-textio.adb:1511 explicit raise

With bootstrapping the compiler and then checking you get

FAIL:   c35507j
FAIL:   cd92001
FAIL:   cxh1001

I guess that nearly all range checks are eliminated and without bootstrapping
we have a disconnect between the redundant checks in the rts and the
testcases.  If it happens that the non-bootstrapped rts is built by the
host compiler(?).


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #13102|0                           |1
        is obsolete|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30911