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[Bug c/33426] New: Support of #pragma ivdep
- From: "gjunk at sapience dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 13 Sep 2007 21:03:42 -0000
- Subject: [Bug c/33426] New: Support of #pragma ivdep
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
When comparing run time on some (floating point) CPU intensive code, we find
that Intel's ICC (9.1) compiler runs significantly faster (30 - 50%) for some
programs - this seems to stem (large) part from ICC's ability to take advantage
of #pragma ivdep. There may be some other differences of course. Tests were run
using gcc 3.3.3 - re-compiling relevant key code with gcc 4.1.2 did not make
any real change.
Wondering if there are any plans to support this ?
thanks
gene/
--
Summary: Support of #pragma ivdep
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: gjunk at sapience dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33426