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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-vect-generic.c | 11 |
2 files changed, 16 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 96fce899fd2..74b1139225c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2011-10-06 Richard Guenther <rguenther@suse.de> + + * tree-vect-generic.c (vector_element): Look at previous + generated results. + 2011-10-06 David Edelsohn <dje.gcc@gmail.com> PR target/39950 diff --git a/gcc/tree-vect-generic.c b/gcc/tree-vect-generic.c index ef03b355f78..8f9f2a836d8 100644 --- a/gcc/tree-vect-generic.c +++ b/gcc/tree-vect-generic.c @@ -536,6 +536,17 @@ vector_element (gimple_stmt_iterator *gsi, tree vect, tree idx, tree *ptmpvec) idx = build_int_cst (TREE_TYPE (idx), index); } + /* When lowering a vector statement sequence do some easy + simplification by looking through intermediate vector results. */ + if (TREE_CODE (vect) == SSA_NAME) + { + gimple def_stmt = SSA_NAME_DEF_STMT (vect); + if (is_gimple_assign (def_stmt) + && (gimple_assign_rhs_code (def_stmt) == VECTOR_CST + || gimple_assign_rhs_code (def_stmt) == CONSTRUCTOR)) + vect = gimple_assign_rhs1 (def_stmt); + } + if (TREE_CODE (vect) == VECTOR_CST) { unsigned i; |