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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 e3b6f1d..95844f4 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; + /* Punt if there are (degenerate) PHIs in middle_bb, there should not be. */ + if (!gimple_seq_empty_p (phi_nodes (middle_bb))) + 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; |