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Diffstat (limited to 'gcc/tree-ssa-ifcombine.c')
| -rw-r--r-- | gcc/tree-ssa-ifcombine.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gcc/tree-ssa-ifcombine.c b/gcc/tree-ssa-ifcombine.c index e199689..ef3d16d 100644 --- a/gcc/tree-ssa-ifcombine.c +++ b/gcc/tree-ssa-ifcombine.c @@ -765,7 +765,22 @@ pass_tree_ifcombine::execute (function *fun) if (stmt && gimple_code (stmt) == GIMPLE_COND) - cfg_changed |= tree_ssa_ifcombine_bb (bb); + if (tree_ssa_ifcombine_bb (bb)) + { + /* Clear range info from all stmts in BB which is now executed + conditional on a always true/false condition. */ + for (gimple_stmt_iterator gsi = gsi_start_bb (bb); + !gsi_end_p (gsi); gsi_next (&gsi)) + { + gimple stmt = gsi_stmt (gsi); + ssa_op_iter i; + tree op; + FOR_EACH_SSA_TREE_OPERAND (op, stmt, i, SSA_OP_DEF) + reset_flow_sensitive_info (op); + } + + cfg_changed |= true; + } } free (bbs); |