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re PR tree-optimization/61559 (FAIL: gcc.dg/builtin-bswap-8.c on i686 with -mmovbe)

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2014-12-13  Richard Biener  <rguenther@suse.de>

	PR middle-end/61559
	* match.pd: Implement bswap patterns for transforms checked by
	gcc.dg/builtin-bswap-8.c.

From-SVN: r217464
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Richard Biener 2014-11-13 08:45:29 +00:00 committed by Richard Biener
parent 52a1ff8bc1
commit 83633539b7
2 changed files with 20 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,9 @@
2014-12-13 Richard Biener <rguenther@suse.de>
PR middle-end/61559
* match.pd: Implement bswap patterns for transforms checked by
gcc.dg/builtin-bswap-8.c.
2014-11-13 Vladimir Makarov <vmakarov@redhat.com>
* lra.c (lra): Switch off rematerialization pass.

14
gcc/match.pd
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@ -576,3 +576,17 @@ along with GCC; see the file COPYING3. If not see
(simplify
(imagpart (complex @0 @1))
@1)
/* BSWAP simplifications, transforms checked by gcc.dg/builtin-bswap-8.c. */
(for bswap (BUILT_IN_BSWAP16 BUILT_IN_BSWAP32 BUILT_IN_BSWAP64)
(simplify
(bswap (bswap @0))
@0)
(simplify
(bswap (bit_not (bswap @0)))
(bit_not @0))
(for bitop (bit_xor bit_ior bit_and)
(simplify
(bswap (bitop:c (bswap @0) @1))
(bitop @0 (bswap @1)))))