On Sat, Feb 20, 2021 at 11:49 AM Martin Liška <mli...@suse.cz> wrote:
>
> After g:1a2a7096e5e20d736c6138179470b21aa5a74864 we forbid inlining
> for a VLA types. What we miss is setting inline_forbidden_reason
> variable.
>
> Fixes:
>
> ./xgcc -B. -O3 -c
> /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr99122-2.c -Winline
>
> during GIMPLE pass: local-fnsummary
> /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr99122-2.c: In function
> ‘foo’:
> /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr99122-2.c:21:1: internal
> compiler error: Segmentation fault
> 21 | }
> | ^
> 0xe8b2ca crash_signal
> /home/marxin/Programming/gcc/gcc/toplev.c:327
> 0x1a92733 pp_format(pretty_printer*, text_info*)
> /home/marxin/Programming/gcc/gcc/pretty-print.c:1096
> 0x1a76b90 diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
> /home/marxin/Programming/gcc/gcc/diagnostic.c:1244
> 0x1a79994 diagnostic_impl
> /home/marxin/Programming/gcc/gcc/diagnostic.c:1406
> 0x1a79994 warning(int, char const*, ...)
> /home/marxin/Programming/gcc/gcc/diagnostic.c:1527
> 0xf1bb16 tree_inlinable_function_p(tree_node*)
> /home/marxin/Programming/gcc/gcc/tree-inline.c:4123
> 0xc3f1c5 compute_fn_summary(cgraph_node*, bool)
> /home/marxin/Programming/gcc/gcc/ipa-fnsummary.c:3110
> 0xc3f937 compute_fn_summary_for_current
> /home/marxin/Programming/gcc/gcc/ipa-fnsummary.c:3160
> 0xc3f937 execute
> /home/marxin/Programming/gcc/gcc/ipa-fnsummary.c:4768
>
> Ready to be installed?
OK.
> Thanks,
> Martin
>
> gcc/ChangeLog:
>
> * tree-inline.c (inline_forbidden_p): Set
> inline_forbidden_reason.
> ---
> gcc/tree-inline.c | 14 ++++++++++++--
> 1 file changed, 12 insertions(+), 2 deletions(-)
>
> diff --git a/gcc/tree-inline.c b/gcc/tree-inline.c
> index c993b1fee8a..1dcb31c0267 100644
> --- a/gcc/tree-inline.c
> +++ b/gcc/tree-inline.c
> @@ -4027,10 +4027,20 @@ inline_forbidden_p (tree fndecl)
> the caller. */
> if (COMPLETE_TYPE_P (TREE_TYPE (TREE_TYPE (fndecl)))
> && !poly_int_tree_p (TYPE_SIZE (TREE_TYPE (TREE_TYPE (fndecl)))))
> - return true;
> + {
> + inline_forbidden_reason
> + = G_("function %q+F can never be inlined because "
> + "it has a VLA return argument");
> + return true;
> + }
> for (tree parm = DECL_ARGUMENTS (fndecl); parm; parm = DECL_CHAIN (parm))
> if (!poly_int_tree_p (DECL_SIZE (parm)))
> - return true;
> + {
> + inline_forbidden_reason
> + = G_("function %q+F can never be inlined because "
> + "it has a VLA argument");
> + return true;
> + }
>
> FOR_EACH_BB_FN (bb, fun)
> {
> --
> 2.30.1
>
