55 lines
1.6 KiB
Diff
55 lines
1.6 KiB
Diff
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This backport contains 1 patch from gcc main stream tree.
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The commit id of these patchs list as following in the order of time.
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0001-re-PR-tree-optimization-92555-ICE-in-exact_div-at-po.patch
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f1e0c7e0eb3eafb122fc3d00242828c82a9286a2
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diff -Nurp a/gcc/testsuite/gcc.dg/vect/pr92555.c b/gcc/testsuite/gcc.dg/vect/pr92555.c
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--- a/gcc/testsuite/gcc.dg/vect/pr92555.c 1970-01-01 08:00:00.000000000 +0800
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+++ b/gcc/testsuite/gcc.dg/vect/pr92555.c 2020-08-11 09:36:18.060000000 +0800
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@@ -0,0 +1,22 @@
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+/* { dg-do compile } */
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+/* { dg-additional-options "-fwrapv" } */
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+
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+signed char rq;
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+
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+signed char
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+pu (int tr, int al)
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+{
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+ signed char x8;
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+
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+ while (tr != 0)
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+ {
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+ for (x8 = 0; x8 >= 0; x8 += 2)
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+ ;
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+
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+ rq ^= al ^ 1;
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+ ++x8;
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+ ++tr;
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+ }
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+
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+ return x8;
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+}
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diff -Nurp a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
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--- a/gcc/tree-vect-loop.c 2020-08-11 09:35:10.952000000 +0800
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+++ b/gcc/tree-vect-loop.c 2020-08-11 09:36:18.064000000 +0800
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@@ -1415,6 +1415,18 @@ vect_update_vf_for_slp (loop_vec_info lo
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for (i = 0; i < nbbs; i++)
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{
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basic_block bb = bbs[i];
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+ for (gphi_iterator si = gsi_start_phis (bb); !gsi_end_p (si);
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+ gsi_next (&si))
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+ {
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+ stmt_vec_info stmt_info = loop_vinfo->lookup_stmt (si.phi ());
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+ if (!stmt_info)
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+ continue;
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+ if ((STMT_VINFO_RELEVANT_P (stmt_info)
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+ || VECTORIZABLE_CYCLE_DEF (STMT_VINFO_DEF_TYPE (stmt_info)))
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+ && !PURE_SLP_STMT (stmt_info))
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+ /* STMT needs both SLP and loop-based vectorization. */
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+ only_slp_in_loop = false;
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+ }
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for (gimple_stmt_iterator si = gsi_start_bb (bb); !gsi_end_p (si);
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gsi_next (&si))
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{
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