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Re: optimization/7056: [ARM] zero extend code worse in 3.1 than 3.0
- From: rearnsha at gcc dot gnu dot org
- To: gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org, pb at nexus dot co dot uk, rearnsha at gcc dot gnu dot org
- Date: 29 Jul 2002 16:36:10 -0000
- Subject: Re: optimization/7056: [ARM] zero extend code worse in 3.1 than 3.0
- Reply-to: rearnsha at gcc dot gnu dot org, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org, pb at nexus dot co dot uk, rearnsha at gcc dot gnu dot org, gcc-gnats at gcc dot gnu dot org
Synopsis: [ARM] zero extend code worse in 3.1 than 3.0
Responsible-Changed-From-To: unassigned->rearnsha
Responsible-Changed-By: rearnsha
Responsible-Changed-When: Mon Jul 29 09:36:09 2002
Responsible-Changed-Why:
.
State-Changed-From-To: analyzed->closed
State-Changed-By: rearnsha
State-Changed-When: Mon Jul 29 09:36:09 2002
State-Changed-Why:
A useful side-effect of this change:
2002-07-22 Richard Earnshaw <rearnsha@arm.com>
* arm.md (movqi): If optimizing and we can create pseudos, use
a ZERO_EXTEND to load from memory, then copy the result into the
target.
(movhi): Likewise, but only for ARMv4.
is that this problem no-longer occurs.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7056