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| author | Ira Rosen <irar@il.ibm.com> | 2010-04-22 18:03:01 +0000 |
|---|---|---|
| committer | Ira Rosen <irar@gcc.gnu.org> | 2010-04-22 18:03:01 +0000 |
| commit | 74500b3e10a9980a4719ed570ae45d8c3bc811c0 (patch) | |
| tree | 144fa12816f0643bd8e04966503f8528729a0649 /gcc/tree-vect-loop.c | |
| parent | 8e80fcacfae2e4f30100fe3a1073dec81d7fa51e (diff) | |
| download | gcc-74500b3e10a9980a4719ed570ae45d8c3bc811c0.zip gcc-74500b3e10a9980a4719ed570ae45d8c3bc811c0.tar.gz gcc-74500b3e10a9980a4719ed570ae45d8c3bc811c0.tar.bz2 | |
re PR tree-optimization/43842 (ice in vect_create_epilog_for_reduction)
PR tree-optimization/43842
* tree-vect-loop.c (vect_create_epilog_for_reduction): Handle
loop unrolling in update of exit phis. Fix comment.
* tree-vect-slp.c (vect_analyze_slp): Check that there are at
least two reduction statements in the loop before starting SLP
analysis.
From-SVN: r158650
Diffstat (limited to 'gcc/tree-vect-loop.c')
| -rw-r--r-- | gcc/tree-vect-loop.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index e6e9008..83b823d 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -2961,7 +2961,7 @@ vect_create_epilog_for_reduction (VEC (tree, heap) *vect_defs, gimple stmt, enum vect_def_type dt = vect_unknown_def_type; int j, i; VEC (tree, heap) *scalar_results = NULL; - int group_size = 1, k, ratio; + unsigned int group_size = 1, k, ratio; VEC (tree, heap) *vec_initial_defs = NULL; VEC (gimple, heap) *phis; @@ -3439,7 +3439,8 @@ vect_finalize_reduction: v_out2 = reduce <v_out1> s_out3 = extract_field <v_out2, 0> s_out4 = adjust_result <s_out3> - use <s_out4> */ + use <s_out4> + use <s_out4> */ /* In SLP we may have several statements in NEW_PHIS and REDUCTION_PHIS (in case that GROUP_SIZE is greater than vectorization factor). Therefore, we @@ -3447,8 +3448,13 @@ vect_finalize_reduction: (GROUP_SIZE / number of new vector stmts) scalar results correspond to the first vector stmt, etc. (RATIO is equal to (GROUP_SIZE / number of new vector stmts)). */ - ratio = group_size / VEC_length (gimple, new_phis); - gcc_assert (!(group_size % VEC_length (gimple, new_phis))); + if (group_size > VEC_length (gimple, new_phis)) + { + ratio = group_size / VEC_length (gimple, new_phis); + gcc_assert (!(group_size % VEC_length (gimple, new_phis))); + } + else + ratio = 1; for (k = 0; k < group_size; k++) { |