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| author | Ramana Radhakrishnan <ramana.radhakrishnan@linaro.org> | 2012-06-15 13:06:51 +0000 |
|---|---|---|
| committer | Ramana Radhakrishnan <ramana@gcc.gnu.org> | 2012-06-15 13:06:51 +0000 |
| commit | 273d260f83a0d914f30f8e5a055731357d53617d (patch) | |
| tree | a5f0f8cfabc844031e7fce105d0d85dbdf167188 /gcc/tree-vect-generic.c | |
| parent | 772e61e10e7bef509904262112e0781e557f0934 (diff) | |
| download | gcc-273d260f83a0d914f30f8e5a055731357d53617d.zip gcc-273d260f83a0d914f30f8e5a055731357d53617d.tar.gz gcc-273d260f83a0d914f30f8e5a055731357d53617d.tar.bz2 | |
tree-vect-generic.c (lower_vec_perm): Propagate vector constants into VEC_PERM_EXPR.
2012-06-15 Ramana Radhakrishnan <ramana.radhakrishnan@linaro.org>
* tree-vect-generic.c (lower_vec_perm): Propagate vector constants
into VEC_PERM_EXPR.
From-SVN: r188659
Diffstat (limited to 'gcc/tree-vect-generic.c')
| -rw-r--r-- | gcc/tree-vect-generic.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/gcc/tree-vect-generic.c b/gcc/tree-vect-generic.c index 06334bb..3b9f561 100644 --- a/gcc/tree-vect-generic.c +++ b/gcc/tree-vect-generic.c @@ -628,6 +628,14 @@ lower_vec_perm (gimple_stmt_iterator *gsi) location_t loc = gimple_location (gsi_stmt (*gsi)); unsigned i; + if (TREE_CODE (mask) == SSA_NAME) + { + gimple def_stmt = SSA_NAME_DEF_STMT (mask); + if (is_gimple_assign (def_stmt) + && gimple_assign_rhs_code (def_stmt) == VECTOR_CST) + mask = gimple_assign_rhs1 (def_stmt); + } + if (TREE_CODE (mask) == VECTOR_CST) { unsigned char *sel_int = XALLOCAVEC (unsigned char, elements); @@ -637,7 +645,11 @@ lower_vec_perm (gimple_stmt_iterator *gsi) & (2 * elements - 1)); if (can_vec_perm_p (TYPE_MODE (vect_type), false, sel_int)) - return; + { + gimple_assign_set_rhs3 (stmt, mask); + update_stmt (stmt); + return; + } } else if (can_vec_perm_p (TYPE_MODE (vect_type), true, NULL)) return; |