> Hello.
>
> Following patch skips static {c,d}tors in IPA ICF.
> Patch can bootstrap and survives regtests on x86_64-linux-gnu.
OK, (it woudl make more sense to turn them into wrappers that can be easily
done, too, but we can do that next stage1)
thanks!
Honza
>
> Ready for trunk?
> Thanks,
> Martin
> >From 7a5748b38e173702c88b97420d6b4d8969ae7e85 Mon Sep 17 00:00:00 2001
> From: marxin <mli...@suse.cz>
> Date: Mon, 21 Mar 2016 13:51:32 +0100
> Subject: [PATCH] Skip static ctors/dtors in IPA ICF (PR ipa/70306)
>
> gcc/testsuite/ChangeLog:
>
> 2016-03-21 Martin Liska <mli...@suse.cz>
>
> * gcc.dg/ipa/pr70306.c: New test.
>
> gcc/ChangeLog:
>
> 2016-03-21 Martin Liska <mli...@suse.cz>
>
> * ipa-icf.c (sem_function::parse): Skip static
> constructors and destructors.
> ---
> gcc/ipa-icf.c | 5 +++++
> gcc/testsuite/gcc.dg/ipa/pr70306.c | 45
> ++++++++++++++++++++++++++++++++++++++
> 2 files changed, 50 insertions(+)
> create mode 100644 gcc/testsuite/gcc.dg/ipa/pr70306.c
>
> diff --git a/gcc/ipa-icf.c b/gcc/ipa-icf.c
> index d82eb87..aa6589c 100644
> --- a/gcc/ipa-icf.c
> +++ b/gcc/ipa-icf.c
> @@ -1697,6 +1697,11 @@ sem_function::parse (cgraph_node *node, bitmap_obstack
> *stack)
> if (lookup_attribute_by_prefix ("omp ", DECL_ATTRIBUTES (node->decl)) !=
> NULL)
> return NULL;
>
> + /* PR ipa/70306. */
> + if (DECL_STATIC_CONSTRUCTOR (node->decl)
> + || DECL_STATIC_DESTRUCTOR (node->decl))
> + return NULL;
> +
> sem_function *f = new sem_function (node, 0, stack);
>
> f->init ();
> diff --git a/gcc/testsuite/gcc.dg/ipa/pr70306.c
> b/gcc/testsuite/gcc.dg/ipa/pr70306.c
> new file mode 100644
> index 0000000..be18208
> --- /dev/null
> +++ b/gcc/testsuite/gcc.dg/ipa/pr70306.c
> @@ -0,0 +1,45 @@
> +/* { dg-options "-O2 -fdump-ipa-icf" } */
> +/* { dg-do run } */
> +
> +int ctor_counter = 1;
> +int dtor_counter;
> +
> +__attribute__((constructor))
> +void A()
> +{
> + ctor_counter++;
> +}
> +
> +__attribute__((destructor))
> +void B()
> +{
> + if (dtor_counter == 0)
> + __builtin_abort ();
> +
> + dtor_counter--;
> +}
> +
> +__attribute__((constructor))
> +static void C() {
> + ctor_counter++;
> +}
> +
> +__attribute__((destructor))
> +static void D() {
> + if (dtor_counter == 0)
> + __builtin_abort ();
> +
> + dtor_counter--;
> +}
> +
> +int main()
> +{
> + if (ctor_counter != 3)
> + __builtin_abort ();
> +
> + dtor_counter = 2;
> +
> + return 0;
> +}
> +
> +/* { dg-final { scan-ipa-dump "Equal symbols: 0" "icf" } } */
> --
> 2.7.1
>
