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Diffstat (limited to 'gcc/tree-ssa-phiopt.c')
| -rw-r--r-- | gcc/tree-ssa-phiopt.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-ssa-phiopt.c b/gcc/tree-ssa-phiopt.c index d4aaf42..e3b6f1d 100644 --- a/gcc/tree-ssa-phiopt.c +++ b/gcc/tree-ssa-phiopt.c @@ -849,6 +849,10 @@ value_replacement (basic_block cond_bb, basic_block middle_bb, && !POINTER_TYPE_P (TREE_TYPE (arg0)))) return 0; + /* Only transform if it removes the condition. */ + if (!single_non_singleton_phi_for_edges (phi_nodes (gimple_bb (phi)), e0, e1)) + return 0; + /* Size-wise, this is always profitable. */ if (optimize_bb_for_speed_p (cond_bb) /* The special case is useless if it has a low probability. */ |