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| author | irar <irar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-12-30 12:53:18 +0000 |
|---|---|---|
| committer | irar <irar@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-12-30 12:53:18 +0000 |
| commit | e8332698dfb8e51e5fa800d37f50dd9386d90f47 (patch) | |
| tree | c2168513fa5ea4cdb4a16c04163e559d3cad885d /gcc/tree-vect-slp.c | |
| parent | d659e595a3bd34384bceb1bb37b68fa5a8e3bd37 (diff) | |
| download | gcc-e8332698dfb8e51e5fa800d37f50dd9386d90f47.tar.gz | |
PR tree-optimization/41956
* tree-vect-slp.c (vect_supported_load_permutation_p): Add check that
the load indices differ.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@155523 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-vect-slp.c')
| -rw-r--r-- | gcc/tree-vect-slp.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c index 3222f8b450e..a3be6786d94 100644 --- a/gcc/tree-vect-slp.c +++ b/gcc/tree-vect-slp.c @@ -796,6 +796,7 @@ vect_supported_load_permutation_p (slp_instance slp_instn, int group_size, { int i = 0, j, prev = -1, next, k; bool supported; + sbitmap load_index; /* FORNOW: permutations are only supported in SLP. */ if (!slp_instn) @@ -816,6 +817,8 @@ vect_supported_load_permutation_p (slp_instance slp_instn, int group_size, return false; supported = true; + load_index = sbitmap_alloc (group_size); + sbitmap_zero (load_index); for (j = 0; j < group_size; j++) { for (i = j * group_size, k = 0; @@ -830,7 +833,17 @@ vect_supported_load_permutation_p (slp_instance slp_instn, int group_size, prev = next; } + + if (TEST_BIT (load_index, prev)) + { + supported = false; + break; + } + + SET_BIT (load_index, prev); } + + sbitmap_free (load_index); if (supported && i == group_size * group_size && vect_supported_slp_permutation_p (slp_instn)) |