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IPA: support -flto + -flive-patching=inline-clone

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There's no fundamental reason why -flive-patching=inline-clone can't
coexist with -flto. Yes, one can theoretically have many more clone
function that includes a live patch. It is pretty much the same
as in-module inlining.

gcc/ChangeLog:

	* opts.cc (finish_options): Print sorry message only
	for -flive-patching=inline-only-static.

gcc/testsuite/ChangeLog:

	* gcc.dg/live-patching-2.c: Update scanned pattern.
	* gcc.dg/live-patching-5.c: New test.
This commit is contained in:
Martin Liska 2022-10-05 11:15:36 +02:00
parent edbb2551d1
commit 1a308905c1
3 changed files with 13 additions and 4 deletions
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5
gcc/opts.cc
View file

@ -1288,8 +1288,9 @@ finish_options (struct gcc_options *opts, struct gcc_options *opts_set,
"%<-fsanitize=kernel-address%>");
/* Currently live patching is not support for LTO. */
if (opts->x_flag_live_patching && opts->x_flag_lto)
sorry ("live patching is not supported with LTO");
if (opts->x_flag_live_patching == LIVE_PATCHING_INLINE_ONLY_STATIC && opts->x_flag_lto)
sorry ("live patching (with %qs) is not supported with LTO",
"inline-only-static");
/* Currently vtable verification is not supported for LTO */
if (opts->x_flag_vtable_verify && opts->x_flag_lto)

4
gcc/testsuite/gcc.dg/live-patching-2.c
View file

@ -1,10 +1,10 @@
/* { dg-do compile } */
/* { dg-require-effective-target lto } */
/* { dg-options "-O2 -flive-patching -flto" } */
/* { dg-options "-O2 -flive-patching=inline-only-static -flto" } */
int main()
{
return 0;
}
/* { dg-message "sorry, unimplemented: live patching is not supported with LTO" "-flive-patching and -flto together" { target *-*-* } 0 } */
/* { dg-message "sorry, unimplemented: live patching \\(with 'inline-only-static'\\) is not supported with LTO" "-flive-patching and -flto together" { target *-*-* } 0 } */

8
gcc/testsuite/gcc.dg/live-patching-5.c Normal file
View file

@ -0,0 +1,8 @@
/* { dg-do compile } */
/* { dg-require-effective-target lto } */
/* { dg-options "-O2 -flive-patching -flto" } */
int main()
{
return 0;
}