gcc-3.4.1 vs gcc-4.2.2 performance regression in memory initialization loop

[Richard Guenther]

On Mon, Apr 7, 2008 at 1:16 AM, Tan, Jeffri <jeffri.tan@verisilicon.com> wrote:
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> Would you happen to know which file the fix is in, so I can apply it as a
> patch to 4.2.2? Thanks.

It is in the "complete alias analysis rewrite" in tree-ssa-alias.c and
tree-ssa-structalias.c.  No chance of backporting this.

Richard.