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Do not inline variadic thunks (PR ipa/83549).

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2018-01-03  Martin Liska  <mliska@suse.cz>

	PR ipa/83549
	* cif-code.def (VARIADIC_THUNK): New enum value.
	* ipa-fnsummary.c (compute_fn_summary): Do not inline variadic
	thunks.
2018-01-03  Martin Liska  <mliska@suse.cz>

	PR ipa/83549
	* g++.dg/ipa/pr83549.C: New test.

From-SVN: r256177
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Martin Liska 2018-01-03 15:15:58 +01:00 committed by Martin Liska
parent e164534f16
commit ca04a532f3
5 changed files with 29 additions and 0 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2018-01-03 Martin Liska <mliska@suse.cz>
PR ipa/83549
* cif-code.def (VARIADIC_THUNK): New enum value.
* ipa-fnsummary.c (compute_fn_summary): Do not inline variadic
thunks.
2018-01-03 Jan Beulich <jbeulich@suse.com>
* sse.md (mov<mode>_internal): Tighten condition for when to use

4
gcc/cif-code.def
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@ -95,6 +95,10 @@ DEFCIFCODE(MISMATCHED_ARGUMENTS, CIF_FINAL_ERROR,
DEFCIFCODE(LTO_MISMATCHED_DECLARATIONS, CIF_FINAL_ERROR,
N_("mismatched declarations during linktime optimization"))
/* Caller is variadic thunk. */
DEFCIFCODE(VARIADIC_THUNK, CIF_FINAL_ERROR,
N_("variadic thunk call"))
/* Call was originally indirect. */
DEFCIFCODE(ORIGINALLY_INDIRECT_CALL, CIF_FINAL_NORMAL,
N_("originally indirect function call not considered for inlining"))

5
gcc/ipa-fnsummary.c
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@ -2422,6 +2422,11 @@ compute_fn_summary (struct cgraph_node *node, bool early)
info->inlinable = false;
node->callees->inline_failed = CIF_CHKP;
}
else if (stdarg_p (TREE_TYPE (node->decl)))
{
info->inlinable = false;
node->callees->inline_failed = CIF_VARIADIC_THUNK;
}
else
info->inlinable = true;
}

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2018-01-03 Martin Liska <mliska@suse.cz>
PR ipa/83549
* g++.dg/ipa/pr83549.C: New test.
2018-01-03 Marek Polacek <polacek@redhat.com>
PR c++/83592

8
gcc/testsuite/g++.dg/ipa/pr83549.C Normal file
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@ -0,0 +1,8 @@
// PR ipa/83549
// { dg-do compile }
// { dg-options "-O2" }
struct A { virtual ~A (); };
struct B { virtual void foo (...); };
struct C : A, B { void foo (...) {} };
C c;