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| author | Jakub Jelinek <jakub@redhat.com> | 2013-01-15 10:31:28 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2013-01-15 10:31:28 +0100 |
| commit | ff7848297eb1516dca6f023766866c8e6771d57f (patch) | |
| tree | fd8e90b5557638e064987b6da3dd91ca61186bc0 /gcc/tree-vect-loop.c | |
| parent | cd61690f63612fc5e50945e446a44b9ee34c088c (diff) | |
| download | gcc-ff7848297eb1516dca6f023766866c8e6771d57f.zip gcc-ff7848297eb1516dca6f023766866c8e6771d57f.tar.gz gcc-ff7848297eb1516dca6f023766866c8e6771d57f.tar.bz2 | |
re PR tree-optimization/55955 (ICE in optab_for_tree_code, at optabs.c:402)
PR tree-optimization/55955
* tree-vect-loop.c (vectorizable_reduction): Give up early on
*SHIFT_EXPR and *ROTATE_EXPR codes.
* gcc.c-torture/compile/pr55955.c: New test.
From-SVN: r195190
Diffstat (limited to 'gcc/tree-vect-loop.c')
| -rw-r--r-- | gcc/tree-vect-loop.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index 3a470e3..d4f6bc7 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -4776,6 +4776,17 @@ vectorizable_reduction (gimple stmt, gimple_stmt_iterator *gsi, { /* 4. Supportable by target? */ + if (code == LSHIFT_EXPR || code == RSHIFT_EXPR + || code == LROTATE_EXPR || code == RROTATE_EXPR) + { + /* Shifts and rotates are only supported by vectorizable_shifts, + not vectorizable_reduction. */ + if (dump_enabled_p ()) + dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, + "unsupported shift or rotation."); + return false; + } + /* 4.1. check support for the operation in the loop */ optab = optab_for_tree_code (code, vectype_in, optab_default); if (!optab) |