diff options
Diffstat (limited to 'gcc/tree-inline.cc')
| -rw-r--r-- | gcc/tree-inline.cc | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/tree-inline.cc b/gcc/tree-inline.cc index 5b35390..05843b8 100644 --- a/gcc/tree-inline.cc +++ b/gcc/tree-inline.cc @@ -1892,6 +1892,15 @@ remap_gimple_stmt (gimple *stmt, copy_body_data *id) gimple_call_set_tail (call_stmt, false); if (gimple_call_from_thunk_p (call_stmt)) gimple_call_set_from_thunk (call_stmt, false); + /* Silently clear musttail flag when inlining a function + with must tail call from a non-musttail call. The inlining + removes one frame so acts like musttail's intent, and we + can be inlining a function with musttail calls in the middle + of caller where musttail will always error. */ + if (gimple_call_must_tail_p (call_stmt) + && id->call_stmt + && !gimple_call_must_tail_p (id->call_stmt)) + gimple_call_set_must_tail (call_stmt, false); if (gimple_call_internal_p (call_stmt)) switch (gimple_call_internal_fn (call_stmt)) { |