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re PR ipa/66705 (section is missing linker error with -flto -fipa-pta)

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2015-09-03  Richard Biener  <rguenther@suse.de>

	PR ipa/66705
	* tree-ssa-structalias.c (ctor_for_analysis): New function.
	(create_variable_info_for_1): Use ctor_for_analysis instead
	of get_constructor.
	(create_variable_info_for): Likewise.

	* g++.dg/lto/pr66705_0.C: New testcase.

From-SVN: r227430
This commit is contained in:
Richard Biener 2015-09-03 09:24:51 +00:00 • committed by Richard Biener
parent 37d13ae648
commit 27e2bd9f39
4 changed files with 34 additions and 9 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2015-09-03 Richard Biener <rguenther@suse.de>
PR ipa/66705
* tree-ssa-structalias.c (ctor_for_analysis): New function.
(create_variable_info_for_1): Use ctor_for_analysis instead
of get_constructor.
(create_variable_info_for): Likewise.
2015-09-02 Charles Baylis <charles.baylis@linaro.org>
* cgraphunit.c (cgraph_node::create_wrapper): Set can_throw_external

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2015-09-03 Richard Biener <rguenther@suse.de>
PR ipa/66705
* g++.dg/lto/pr66705_0.C: New testcase.
2015-09-02 Balaji V. Iyer <balaji.v.iyer@intel.com>
PR middle-end/60586

15
gcc/testsuite/g++.dg/lto/pr66705_0.C Normal file
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@ -0,0 +1,15 @@
// { dg-lto-do link }
// { dg-lto-options { { -O2 -flto -flto-partition=max -fipa-pta } } }
// { dg-extra-ld-options "-r -nostdlib" }
class A {
public:
A();
};
int a = 0;
void foo() {
a = 0;
A b;
for (; a;)
;
}

15
gcc/tree-ssa-structalias.c
View file

@ -5619,7 +5619,6 @@ create_variable_info_for_1 (tree decl, const char *name)
auto_vec<fieldoff_s> fieldstack;
fieldoff_s *fo;
unsigned int i;
varpool_node *vnode;
if (!declsize
|| !tree_fits_uhwi_p (declsize))
@ -5637,12 +5636,10 @@ create_variable_info_for_1 (tree decl, const char *name)
/* Collect field information. */
if (use_field_sensitive
&& var_can_have_subvars (decl)
/* ??? Force us to not use subfields for global initializers
in IPA mode. Else we'd have to parse arbitrary initializers. */
/* ??? Force us to not use subfields for globals in IPA mode.
Else we'd have to parse arbitrary initializers. */
&& !(in_ipa_mode
&& is_global_var (decl)
&& (vnode = varpool_node::get (decl))
&& vnode->get_constructor ()))
&& is_global_var (decl)))
{
fieldoff_s *fo = NULL;
bool notokay = false;
@ -5774,13 +5771,13 @@ create_variable_info_for (tree decl, const char *name)
/* If this is a global variable with an initializer and we are in
IPA mode generate constraints for it. */
if (vnode->get_constructor ()
&& vnode->definition)
ipa_ref *ref;
for (unsigned idx = 0; vnode->iterate_reference (idx, ref); ++idx)
{
auto_vec<ce_s> rhsc;
struct constraint_expr lhs, *rhsp;
unsigned i;
get_constraint_for_rhs (vnode->get_constructor (), &rhsc);
get_constraint_for_address_of (ref->referred->decl, &rhsc);
lhs.var = vi->id;
lhs.offset = 0;
lhs.type = SCALAR;