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From: "meissner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/45585] [4.6 Regression] ICE on powerpc-apple-darwin9 for gfortran.dg/transfer_simplify_2.f90 with -O2 -m64
Date: Fri, 05 Nov 2010 21:29:00 -0000	[thread overview]
Message-ID: <bug-45585-4-dLUBCP0zVA@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-45585-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45585

Michael Meissner <meissner at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot       |meissner at gcc dot gnu.org
                   |gnu.org                     |

--- Comment #5 from Michael Meissner <meissner at gcc dot gnu.org> 2010-11-05 21:28:55 UTC ---
Created attachment 22297
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22297
Patch to allow loading/storing DI values in FPR registers

This patch fixes the problem in the bug.  What is happening is originally if
you were loading up a static 64-bit integer variable to convert it to floating
point, the compiler would first load the variable into a GPR, then store it on
the stack, and then load the value from the stack to the FPR.  My optimization
allowed the fp convert to take memory operands so it didn't have to go through
the GPR registers.  However, since Darwin has its own patterns for load/store,
it didn't go through the normal move patterns, and was overlooked.


  parent reply	other threads:[~2010-11-05 21:29 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <bug-45585-4@http.gcc.gnu.org/bugzilla/>
2010-09-30 15:37 ` rguenth at gcc dot gnu.org
2010-10-10 19:38 ` dominiq at lps dot ens.fr
2010-11-04 22:00 ` dominiq at lps dot ens.fr
2010-11-05 21:29 ` meissner at gcc dot gnu.org [this message]
2010-11-05 21:31 ` meissner at gcc dot gnu.org
2010-11-07 11:45 ` dominiq at lps dot ens.fr
2010-11-08 19:02 ` meissner at gcc dot gnu.org
2010-11-08 19:04 ` meissner at gcc dot gnu.org

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