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[Bug c/37807] Exponential compile time with MMX builtins.
- From: "suckfish at ihug dot co dot nz" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 12 Oct 2008 05:27:17 -0000
- Subject: [Bug c/37807] Exponential compile time with MMX builtins.
- References: <bug-37807-2018@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #10 from suckfish at ihug dot co dot nz 2008-10-12 05:27 -------
Changelog for patch if accepted [will do full bootstrap & make test]:
2008-10-12 Ralph Loader <suckfish@ihug.co.nz>
PR 37807
* rtlanal.c (numzero_bits1): Return early on vector types, avoiding
exponential time recursion.
(num_sign_bit_copies1): Likewise.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37807