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Diffstat (limited to 'gcc/tree-ssa-live.c')
| -rw-r--r-- | gcc/tree-ssa-live.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/tree-ssa-live.c b/gcc/tree-ssa-live.c index 8f504f0..e0f9d9c 100644 --- a/gcc/tree-ssa-live.c +++ b/gcc/tree-ssa-live.c @@ -765,6 +765,10 @@ remove_unused_locals (void) FOR_EACH_PHI_ARG (arg_p, phi, i, SSA_OP_ALL_USES) { tree arg = USE_FROM_PTR (arg_p); + int index = PHI_ARG_INDEX_FROM_USE (arg_p); + tree block = gimple_phi_arg_block (phi, index); + if (block != NULL) + TREE_USED (block) = true; mark_all_vars_used (&arg, global_unused_vars); } } |