[Bug rtl-optimization/26244] [4.2 Regression] FAIL: gcc.c-torture/execute/builtin-bitops-1.c execution, -O3 -fomit-frame-pointer -funroll-loops

[dave at hiauly1 dot hia dot nrc dot ca]

------- Comment #12 from dave at hiauly1 dot hia dot nrc dot ca  2006-06-20 03:43 -------
Subject: Re:  [4.2 Regression] FAIL: gcc.c-torture/execute/builtin-bitops-1.c
execution,  -O3 -fomit-frame-pointer -funroll-loops

> could you please try to simplify the testcase, ideally to separate just the
> single misscompiled loop?  I again failed to find anything wrong using just a
> crosscompiler.

I've simplified the testcase.  It appears that my_parityll fails
for 0x0000000100000000ULL.  However, the preceding value is needed
to trigger the bug.

Dave


------- Comment #13 from dave at hiauly1 dot hia dot nrc dot ca  2006-06-20 03:43 -------
Created an attachment (id=11708)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11708&action=view)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26244