diff options
| author | liuhongt <hongtao.liu@intel.com> | 2022-09-13 13:25:24 +0800 |
|---|---|---|
| committer | liuhongt <hongtao.liu@intel.com> | 2022-09-14 15:44:48 +0800 |
| commit | 93b09bf3246f413b8e469ebfd8ce43947c0073a6 (patch) | |
| tree | c05d14fea44dca329703f92cc6de94d033ead4fc /gcc/tree-vect-loop.cc | |
| parent | 9d503515ceebc778a5c2958f7459367c34f1fed0 (diff) | |
| download | gcc-93b09bf3246f413b8e469ebfd8ce43947c0073a6.zip gcc-93b09bf3246f413b8e469ebfd8ce43947c0073a6.tar.gz gcc-93b09bf3246f413b8e469ebfd8ce43947c0073a6.tar.bz2 | |
Check another epilog variable peeling case in vectorizable_nonlinear_induction.
in vectorizable_nonlinear_induction, r13-2503-gc13223b790bbc5 prevent variable peeling by
only checking LOOP_VINFO_MASK_SKIP_NITERS (loop_vinfo). But when
"!vect_use_loop_mask_for_alignment_p (loop_vinfo) &&
LOOP_VINFO_PEELING_FOR_ALIGNMENT (loop_vinfo) < 0", vectorizer will
still do variable peeling for epilog, and it hits gcc_assert in
vect_peel_nonlinear_iv_init.
gcc/ChangeLog:
PR tree-optimization/106905
* tree-vect-loop.cc (vectorizable_nonlinear_induction): Return
false when !vect_use_loop_mask_for_alignment_p (loop_vinfo) &&
LOOP_VINFO_PEELING_FOR_ALIGNMENT (loop_vinfo) < 0.
gcc/testsuite/ChangeLog:
* gcc.target/i386/pr106905.c: New test.
* gcc.target/ia64/pr106905.c: New test.
Diffstat (limited to 'gcc/tree-vect-loop.cc')
| -rw-r--r-- | gcc/tree-vect-loop.cc | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc index 8f88f17..9c434b6 100644 --- a/gcc/tree-vect-loop.cc +++ b/gcc/tree-vect-loop.cc @@ -8646,8 +8646,10 @@ vectorizable_nonlinear_induction (loop_vec_info loop_vinfo, /* Also doens't support peel for neg when niter is variable. ??? generate something like niter_expr & 1 ? init_expr : -init_expr? */ niters_skip = LOOP_VINFO_MASK_SKIP_NITERS (loop_vinfo); - if (niters_skip != NULL_TREE - && TREE_CODE (niters_skip) != INTEGER_CST) + if ((niters_skip != NULL_TREE + && TREE_CODE (niters_skip) != INTEGER_CST) + || (!vect_use_loop_mask_for_alignment_p (loop_vinfo) + && LOOP_VINFO_PEELING_FOR_ALIGNMENT (loop_vinfo) < 0)) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, |