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Re: [PATCH 6/6] combine: allow combining two insns into two in some cases (PR52714)

From: Jeff Law <law at redhat dot com>
To: Segher Boessenkool <segher at kernel dot crashing dot org>
Cc: gcc-patches at gcc dot gnu dot org
Date: Tue, 02 Dec 2014 23:33:22 -0700
Subject: Re: [PATCH 6/6] combine: allow combining two insns into two in some cases (PR52714)
Authentication-results: sourceware.org; auth=none
References: <cover dot 1417135737 dot git dot segher at kernel dot crashing dot org> <5030840454fd7bbd071e868121a946eaa3e03338 dot 1417135738 dot git dot segher at kernel dot crashing dot org> <547CA7EE dot 6040809 at redhat dot com> <20141203011104 dot GA10500 at gate dot crashing dot org>

On 12/02/14 18:11, Segher Boessenkool wrote:

On Mon, Dec 01, 2014 at 10:39:58AM -0700, Jeff Law wrote:

Also OK with a testcase.  I'd recommend just using the one from 52714,
make it m68k specific.  Not sure if it's best to scan the assembly or
.combine dump -- your call.


Here is the testcase.  I cannot actually test it on an m68k build, should
really do something about that (I build lots of cross compilers but they
cannot run the testsuite).  Does it look okay, can you test it yourself?
[I did of course test the generated asm is indeed okay; just cannot test
the dejagnu stuff].


Segher


2014-12-02  Segher Boessenkool  <segher@kernel.crashing.org>

gcc/testsuite/
	PR rtl-optimization/52714
	* gcc.target/m68k/pr52714.c: New testcase.

THanks.  Based on a later message, you were able to do the testing.

At some point during the gcc-5 release process, I'll bootstrap m68k viaAranym.


Jeff

References:
- Re: [PATCH 6/6] combine: allow combining two insns into two in some cases (PR52714)
  - From: Jeff Law
- Re: [PATCH 6/6] combine: allow combining two insns into two in some cases (PR52714)
  - From: Segher Boessenkool

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