This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

INSN_EXACT_TICK & scheduler backtrack

From: Greg McGary <greg dot mcgary at gmail dot com>
To: "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
Date: Thu, 13 Sep 2012 10:56:21 -0700
Subject: INSN_EXACT_TICK & scheduler backtrack

When the timing requirements are not met upon queueing an insn with
INSN_EXACT_TICK, the scheduler backtracks.  This seems wasteful.
Why not prioritize INSN_EXACT_TICK insns so that we queue them
first on the cycle they need?

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]