Can you please file a bug in bugzilla if you haven't already done so?
We can still fix bugs during the next three months ;)
Well, I opened one. Briefly.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63900
dw
On Thu, Nov 13, 2014 at 01:14:41PM +0100, Richard Biener wrote:
It might be that RTL alias analysis / CSE give up too early here
(we don't optimize across asm() on the GIMPLE level at all ... heh).
I didn't look where it gives up (even though appearantly it does).
The cse1 pass doesn't carry
On Fri, Nov 14, 2014 at 12:51 AM, David Wohlferd d...@limegreensocks.com
wrote:
On 11/13/2014 6:02 AM, Richard Biener wrote:
On Thu, Nov 13, 2014 at 2:53 PM, Hans-Peter Nilsson h...@bitrange.com
wrote:
On Thu, 13 Nov 2014, David Wohlferd wrote:
Sorry for the (very) delayed response. I'm
Sorry for the (very) delayed response. I'm still looking for feedback
here so I can fix the docs.
To refresh: The topic of conversation was the (extremely) wrong
explanation that has been in the docs since forever about how to use
memory constraints with inline asm to avoid the performance
On Thu, Nov 13, 2014 at 1:03 PM, David Wohlferd d...@limegreensocks.com wrote:
Sorry for the (very) delayed response. I'm still looking for feedback here
so I can fix the docs.
To refresh: The topic of conversation was the (extremely) wrong explanation
that has been in the docs since forever
On 11/13/2014 6:02 AM, Richard Biener wrote:
On Thu, Nov 13, 2014 at 2:53 PM, Hans-Peter Nilsson h...@bitrange.com wrote:
On Thu, 13 Nov 2014, David Wohlferd wrote:
Sorry for the (very) delayed response. I'm still looking for feedback here so
I can fix the docs.
Thank you for your
I've forgot if someone mentioned whether we have a test-case in
our test-suite for this feature.
I'm looking thru gcc/testsuite/*.c to see if I can spot anything. It's
not easy since there is a lot of asm and the people who write these
are apparently allergic to using comments to describe
On Fri, Oct 3, 2014 at 8:41 AM, David Wohlferd d...@limegreensocks.com wrote:
You want
=m (*( struct foo { char x[8]; } __attribute__((may_alias)) *)Dest)
Thank you. With your help, that worse-than-useless sample in the docs is
getting closer to something people can actually use.
You want
=m (*( struct foo { char x[8]; } __attribute__((may_alias)) *)Dest)
Thank you. With your help, that worse-than-useless sample in the docs
is getting closer to something people can actually use.
Except for one last serious problem: This trick only works for very
specific (and
On Thu, 2 Oct 2014, David Wohlferd wrote:
You want
=m (*( struct foo { char x[8]; } __attribute__((may_alias)) *)Dest)
Thank you. With your help, that worse-than-useless sample in the docs
is getting closer to something people can actually use.
Thank *you* for your investigation.
On 9/25/2014 12:36 AM, Yury Gribov wrote:
On 09/24/2014 12:31 PM, Richard Biener wrote:
On Wed, Sep 24, 2014 at 9:43 AM, David Wohlferd
d...@limegreensocks.com wrote:
Hans-Peter Nilsson: I should have listened to you back when you raised
concerns about this. My apologies for ever doubting
On Fri, Sep 26, 2014 at 12:37 PM, David Wohlferd d...@limegreensocks.com
wrote:
On 9/25/2014 12:36 AM, Yury Gribov wrote:
On 09/24/2014 12:31 PM, Richard Biener wrote:
On Wed, Sep 24, 2014 at 9:43 AM, David Wohlferd d...@limegreensocks.com
wrote:
Hans-Peter Nilsson: I should have
On 09/24/2014 12:31 PM, Richard Biener wrote:
On Wed, Sep 24, 2014 at 9:43 AM, David Wohlferd d...@limegreensocks.com wrote:
Hans-Peter Nilsson: I should have listened to you back when you raised
concerns about this. My apologies for ever doubting you.
In summary:
- The trick in the docs for
Hans-Peter Nilsson: I should have listened to you back when you raised
concerns about this. My apologies for ever doubting you.
In summary:
- The trick in the docs for using an arbitrarily sized struct to force
register flushes for inline asm does not work.
- Placing the inline asm in a
On Wed, Sep 24, 2014 at 9:43 AM, David Wohlferd d...@limegreensocks.com wrote:
Hans-Peter Nilsson: I should have listened to you back when you raised
concerns about this. My apologies for ever doubting you.
In summary:
- The trick in the docs for using an arbitrarily sized struct to force
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