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[lra] a patch to speed up LRA

From: Vladimir Makarov <vmakarov at redhat dot com>
To: gcc-patches <gcc-patches at gcc dot gnu dot org>
Date: Wed, 22 Jun 2011 16:35:55 -0400
Subject: [lra] a patch to speed up LRA

The following patch speeds up LRA mostly for architectures with moderate or large register files.

The patch was successfully bootstrapped on x86-64, ia64, and ppc64.

2011-06-22 Vladimir Makarov <vmakarov@redhat.com>

        * lra-assign.c (live_range_hard_reg_pseudos): Make it a sparseset.
        (live_range_hard_reg_pseudos, live_range_reload_pseudos): Ditto.
        (init_live_reload_pseudos, finish_live_reload_pseudos): Work with
        the above variables as sparsesets.
        (find_hard_regno_for, spill_for): Ditto.
        (setup_live_pseudos_and_spill_after_equiv_moves): Ditto.

* Makefile.in (lra-assign.o): Add missed sparseset.h.

Attachment: jun22.patch
Description: Text document

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