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[Bug tree-optimization/23971] Compilation takes a long time with -O2 option
- From: "falk at debian dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 Sep 2005 21:18:50 -0000
- Subject: [Bug tree-optimization/23971] Compilation takes a long time with -O2 option
- References: <20050919192030.23971.tsv@solvo.ru>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From falk at debian dot org 2005-09-19 21:18 -------
Confirmed. Test case:
void rgb_ycc_start(long *rgb_ycc_tab) {
long i;
for (i = 0; i <= 255; i++)
rgb_ycc_tab[i] = 19595 * i;
}
These 4 lines take 27 seconds to compile, nearly all of which is spent
in synth_mult. Problem only occurs with -mcpu=ev4.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23971