diff options
Diffstat (limited to 'gcc/tree-tailcall.c')
| -rw-r--r-- | gcc/tree-tailcall.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/tree-tailcall.c b/gcc/tree-tailcall.c index 9ebed9de524..de18f9bcf87 100644 --- a/gcc/tree-tailcall.c +++ b/gcc/tree-tailcall.c @@ -37,6 +37,7 @@ along with GCC; see the file COPYING3. If not see #include "tree-into-ssa.h" #include "tree-dfa.h" #include "except.h" +#include "tree-eh.h" #include "dbgcnt.h" #include "cfgloop.h" #include "common/common-target.h" @@ -472,6 +473,12 @@ find_tail_calls (basic_block bb, struct tailcall **ret) && !auto_var_in_fn_p (ass_var, cfun->decl)) return; + /* If the call might throw an exception that wouldn't propagate out of + cfun, we can't transform to a tail or sibling call (82081). */ + if (stmt_could_throw_p (stmt) + && !stmt_can_throw_external (stmt)) + return; + /* We found the call, check whether it is suitable. */ tail_recursion = false; func = gimple_call_fndecl (call); |