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| author | Richard Biener <rguenther@suse.de> | 2018-08-28 10:15:54 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2018-08-28 10:15:54 +0000 |
| commit | 8e8bf292092c2d7e79f2e3d503ca1bdfe2642032 (patch) | |
| tree | 45b5f39ec2f90968a67b50d4e9a340707cdcf01e /gcc | |
| parent | f2b0062c10f85110e52ad7daa8bc268cdc262b86 (diff) | |
| download | gcc-8e8bf292092c2d7e79f2e3d503ca1bdfe2642032.zip gcc-8e8bf292092c2d7e79f2e3d503ca1bdfe2642032.tar.gz gcc-8e8bf292092c2d7e79f2e3d503ca1bdfe2642032.tar.bz2 | |
re PR tree-optimization/87117 (ICE in eliminate_dom_walker::eliminate_cleanup(bool) at gcc/gcc/tree-ssa-sccvn.c:5431 since r263875)
2018-08-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/87117
* tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_cleanup):
Handle removed stmt without LHS (GIMPLE_NOP).
From-SVN: r263912
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/tree-ssa-sccvn.c | 47 |
2 files changed, 28 insertions, 25 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 694fdf2..a357b4b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,6 +1,12 @@ 2018-08-28 Richard Biener <rguenther@suse.de> PR tree-optimization/87117 + * tree-ssa-sccvn.c (eliminate_dom_walker::eliminate_cleanup): + Handle removed stmt without LHS (GIMPLE_NOP). + +2018-08-28 Richard Biener <rguenther@suse.de> + + PR tree-optimization/87117 * tree-ssa-sccvn.c (fully_constant_vn_reference_p): Exclude void which is is_gimple_reg_type by checking for COMPLETE_TYPE_P. diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c index 381fc8d..9277de0 100644 --- a/gcc/tree-ssa-sccvn.c +++ b/gcc/tree-ssa-sccvn.c @@ -5425,31 +5425,28 @@ eliminate_dom_walker::eliminate_cleanup (bool region_p) do_release_defs = false; } } - else - { - tree lhs = gimple_get_lhs (stmt); - if (TREE_CODE (lhs) == SSA_NAME - && !has_zero_uses (lhs)) - { - if (dump_file && (dump_flags & TDF_DETAILS)) - fprintf (dump_file, "Keeping eliminated stmt live " - "as copy because of out-of-region uses\n"); - tree sprime = eliminate_avail (gimple_bb (stmt), lhs); - gimple_stmt_iterator gsi = gsi_for_stmt (stmt); - if (is_gimple_assign (stmt)) - { - gimple_assign_set_rhs_from_tree (&gsi, sprime); - update_stmt (gsi_stmt (gsi)); - continue; - } - else - { - gimple *copy = gimple_build_assign (lhs, sprime); - gsi_insert_before (&gsi, copy, GSI_SAME_STMT); - do_release_defs = false; - } - } - } + else if (tree lhs = gimple_get_lhs (stmt)) + if (TREE_CODE (lhs) == SSA_NAME + && !has_zero_uses (lhs)) + { + if (dump_file && (dump_flags & TDF_DETAILS)) + fprintf (dump_file, "Keeping eliminated stmt live " + "as copy because of out-of-region uses\n"); + tree sprime = eliminate_avail (gimple_bb (stmt), lhs); + gimple_stmt_iterator gsi = gsi_for_stmt (stmt); + if (is_gimple_assign (stmt)) + { + gimple_assign_set_rhs_from_tree (&gsi, sprime); + update_stmt (gsi_stmt (gsi)); + continue; + } + else + { + gimple *copy = gimple_build_assign (lhs, sprime); + gsi_insert_before (&gsi, copy, GSI_SAME_STMT); + do_release_defs = false; + } + } } if (dump_file && (dump_flags & TDF_DETAILS)) |