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Re: Possible CSE quirk involving SUBREG on the i386
- To: law at cygnus dot com, John Wehle <john at feith dot com>
- Subject: Re: Possible CSE quirk involving SUBREG on the i386
- From: Richard Henderson <rth at cygnus dot com>
- Date: Tue, 30 Jun 1998 15:15:14 -0700
- Cc: egcs at cygnus dot com, "David S. Miller" <davem at dm dot cobaltmicro dot com>
- References: <199806300534.BAA27602@jwlab.FEITH.COM> <15831.899190753@hurl.cygnus.com>
- Reply-To: Richard Henderson <rth at cygnus dot com>
On Tue, Jun 30, 1998 at 01:12:33AM -0600, Jeffrey A Law wrote:
> I'm not sure this is really a CSE issue. Though it might be a combine
> issue.
I concurr. DaveM was reporting to me similar lossage in the Sparc
port with SImode subregs of DImode values with an example like
void bar(ull x);
void foo(ull x) { bar(x); }
I may have a look at it this evening.
r~