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Date: Mon, 15 Nov 2004 23:05:00 -0000
From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Message-ID: <20041115230500.18507.pinskia@gcc.gnu.org>
Reply-To: gcc-bugzilla@gcc.gnu.org
Subject: [Bug tree-optimization/18507] New: block_defs_stack varrray should not be GC'ed
X-Bugzilla-Reason: CC
X-SW-Source: 2004-11/txt/msg01908.txt.bz2
List-Id: <gcc-bugs.sourceware.org>

For the testcase in PR 13776 (ir.ii) we spend a lot of time (10% out of 120 seconds) in ggc_alloc.
Most of that time comes from creatting/expanding the block_defs_stack varray in tree-into-ssa.c
Why is this GC allocated in the first place?
Maybe this should be a non-gc'ed VEC.
We know that this varray does not spill out from rewrite_blocks/rewrite_ssa_into_ssa at all.

-- 
           Summary: block_defs_stack varrray should not be GC'ed
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Keywords: compile-time-hog
          Severity: minor
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18507