pr45241 give up dot_prod pattern searching if stmt is outside the loop.
* tree-vect-patterns.c (vect_recog_dot_prod_pattern): Give up dot_prod pattern searching if a stmt is outside the loop. * gcc.dg/vect/no-tree-pre-pr45241.c: New. From-SVN: r163207
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2010-08-12 Changpeng Fang <changpeng.fang@amd.com>
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* tree-vect-patterns.c (vect_recog_dot_prod_pattern): Give
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up dot_prod pattern searching if a stmt is outside the loop.
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2010-08-12 H.J. Lu <hongjiu.lu@intel.com>
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Uros Bizjak <ubizjak@gmail.com>
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@ -1,3 +1,8 @@
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2010-08-12 Changpeng Fang <changpeng.fang@amd.com>
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PR tree-optimization/45241
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* gcc.dg/vect/no-tree-pre-pr45241.c: New test.
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2010-08-12 Uros Bizjak <ubizjak@gmail.com>
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* gcc.target/i386/pr40906-1.c: Add -fno-asynchronous-unwind-tables
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/* PR tree-optimization/45241 */
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/* { dg-do compile } */
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/* { dg-options "-ftree-vectorize" } */
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int
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foo (short x)
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{
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short i, y;
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int sum;
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for (i = 0; i < x; i++)
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y = x * i;
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for (i = x; i > 0; i--)
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sum += y;
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return sum;
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}
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/* { dg-final { cleanup-tree-dump "vect" } } */
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@ -255,6 +255,11 @@ vect_recog_dot_prod_pattern (gimple last_stmt, tree *type_in, tree *type_out)
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prod_type = half_type;
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stmt = SSA_NAME_DEF_STMT (oprnd0);
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/* It could not be the dot_prod pattern if the stmt is outside the loop. */
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if (!flow_bb_inside_loop_p (loop, gimple_bb (stmt)))
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return NULL;
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/* FORNOW. Can continue analyzing the def-use chain when this stmt in a phi
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inside the loop (in case we are analyzing an outer-loop). */
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if (!is_gimple_assign (stmt))
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