diff options
Diffstat (limited to 'gcc/graphite-scop-detection.c')
| -rw-r--r-- | gcc/graphite-scop-detection.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/gcc/graphite-scop-detection.c b/gcc/graphite-scop-detection.c index bc66dfd..b209ba6 100644 --- a/gcc/graphite-scop-detection.c +++ b/gcc/graphite-scop-detection.c @@ -1744,7 +1744,9 @@ build_cross_bb_scalars_def (scop_p scop, tree def, basic_block def_bb, gimple *use_stmt; imm_use_iterator imm_iter; FOR_EACH_IMM_USE_STMT (use_stmt, imm_iter, def) - if (def_bb != gimple_bb (use_stmt) && !is_gimple_debug (use_stmt)) + if ((def_bb != gimple_bb (use_stmt) && !is_gimple_debug (use_stmt)) + /* PHIs have their effect at "BBs" on the edges. See PR79622. */ + || gimple_code (SSA_NAME_DEF_STMT (def)) == GIMPLE_PHI) { writes->safe_push (def); DEBUG_PRINT (dp << "Adding scalar write: "; @@ -1758,7 +1760,8 @@ build_cross_bb_scalars_def (scop_p scop, tree def, basic_block def_bb, } } -/* Record DEF if it is used in other bbs different than DEF_BB in the SCOP. */ +/* Record USE if it is defined in other bbs different than USE_STMT + in the SCOP. */ static void build_cross_bb_scalars_use (scop_p scop, tree use, gimple *use_stmt, @@ -1774,7 +1777,9 @@ build_cross_bb_scalars_use (scop_p scop, tree use, gimple *use_stmt, return; gimple *def_stmt = SSA_NAME_DEF_STMT (use); - if (gimple_bb (def_stmt) != gimple_bb (use_stmt)) + if (gimple_bb (def_stmt) != gimple_bb (use_stmt) + /* PHIs have their effect at "BBs" on the edges. See PR79622. */ + || gimple_code (def_stmt) == GIMPLE_PHI) { DEBUG_PRINT (dp << "Adding scalar read: "; print_generic_expr (dump_file, use); |