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Diffstat (limited to 'gcc/tree-ssa-loop-niter.c')
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index f562930..9d6f9ef 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -1514,6 +1514,13 @@ expand_simple_operations (tree expr) if (gimple_code (stmt) != GIMPLE_ASSIGN) return expr; + /* Avoid expanding to expressions that contain SSA names that need + to take part in abnormal coalescing. */ + ssa_op_iter iter; + FOR_EACH_SSA_TREE_OPERAND (e, stmt, iter, SSA_OP_USE) + if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (e)) + return expr; + e = gimple_assign_rhs1 (stmt); code = gimple_assign_rhs_code (stmt); if (get_gimple_rhs_class (code) == GIMPLE_SINGLE_RHS) |