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| author | Richard Biener <rguenther@suse.de> | 2014-11-13 08:45:29 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2014-11-13 08:45:29 +0000 |
| commit | 83633539b751a8ef90378ccd26b73df03c3fe40f (patch) | |
| tree | f1c0128746119e270da504dedcd942085c05c2e7 /gcc | |
| parent | 52a1ff8bc1fadcafdb5ac432abb5d1bdd053097c (diff) | |
| download | gcc-83633539b751a8ef90378ccd26b73df03c3fe40f.zip gcc-83633539b751a8ef90378ccd26b73df03c3fe40f.tar.gz gcc-83633539b751a8ef90378ccd26b73df03c3fe40f.tar.bz2 | |
re PR tree-optimization/61559 (FAIL: gcc.dg/builtin-bswap-8.c on i686 with -mmovbe)
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
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/match.pd | 14 |
2 files changed, 20 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 90b9639..d32aa4f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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. diff --git a/gcc/match.pd b/gcc/match.pd index d94a8f5..1d7b153 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -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))))) |