r221689 - in /branches/gcc-4_9-branch/gcc: Chan...

[amodra@gcc.gnu.org]

Author: amodra
Date: Thu Mar 26 08:33:53 2015
New Revision: 221689

URL: https://gcc.gnu.org/viewcvs?rev=221689&root=gcc&view=rev
Log:
	PR target/63150
	Backport from trunk 211857 and 221445.
	2014-06-20  Maciej W. Rozycki  <macro@codesourcery.com>
	* config/rs6000/rs6000.md: Append `DONE' to preparation
	statements of `bswap' pattern splitters.

	2015-03-16  Alan Modra  <amodra@gmail.com>
	* config/rs6000/rs6000.md (bswapdi2): Remove one scratch reg.
	Modify Z->r bswapdi splitter to use dest in place of scratch.
	In r->Z and Z->r bswapdi splitter rename word_high, word_low
	to word1, word2 and rearrange logic to suit.
	(bswapdi2_64bit): Remove early clobber on Z->r alternative.
	(bswapdi2_ldbrx): Likewise.  Remove '??' on r->r.
	(bswapdi2_32bit): Remove early clobber on Z->r alternative.
	Add one '?' on r->r.  Modify Z->r splitter to avoid need for
	early clobber.


Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/config/rs6000/rs6000.md
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_9-branch/gcc/testsuite/gcc.target/powerpc/pr53199.c