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Re: [tree-ssa] Remove useless null pointer checks
- From: law at redhat dot com
- To: Jason Merrill <jason at redhat dot com>
- Cc: Jeff Sturm <jsturm at one-point dot com>, gcc-patches at gcc dot gnu dot org
- Date: Tue, 05 Aug 2003 10:18:56 -0600
- Subject: Re: [tree-ssa] Remove useless null pointer checks
- Reply-to: law at redhat dot com
In message <wvloeza8u7t.fsf@prospero.boston.redhat.com>, Jason Merrill writes:
>> Note that simply removing the typecasts can actually be a step backwards
>> in terms of exposing stuff to the optimizer. I found that when I
>> started looking real closely at stripping out unwanted NOP_EXPRs in
>> the gimplifier.
>
>Can you elaborate?
FYI -- I'm trying to recreate the changes I made to the gimplifier
which showed this behavior.
Jeff