https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111559
Sergei Trofimovich changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111559
--- Comment #9 from CVS Commits ---
The master branch has been updated by Sergei Trofimovich :
https://gcc.gnu.org/g:043a6fcbc27f8721301eb2f72a7839f54f393003
commit r14-4421-g043a6fcbc27f8721301eb2f72a7839f54f393003
Author: Sergei Trofimovich
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111559
--- Comment #8 from Franz Sirl ---
The proposed patch on top of r14-4307 fixes the profiled bootstrap here.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111559
--- Comment #7 from Sergei Trofimovich ---
Proposed conservative fix as
https://gcc.gnu.org/pipermail/gcc-patches/2023-September/631526.html
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111559
--- Comment #6 from Sergei Trofimovich ---
Uninitialized value comes from `ipa_merge_profiles()` for our `rule1_same()`
alias and `rule1()` functions:
// in gcc/ipa-icf.cc:
else if (create_alias)
{
alias->icf_merged = true;
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111559
--- Comment #5 from Sergei Trofimovich ---
Slightly shorter example that does not rely on inline:
// $ cat bug.c
__attribute__((noipa)) static void edge(void) {}
int p = 0;
__attribute__((noinline))
static void rule1(void) { if (p) edge(); }
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111559
--- Comment #4 from Sergei Trofimovich ---
Looks like identical code folding creates uninitialized profile counters if
there are any edges in folded functions.
I think cvise did a decent job extracting the reproducer below. Here is a
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111559
Franz Sirl changed:
What|Removed |Added
CC||sirl at gcc dot gnu.org
--- Comment #3
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111559
Sergei Trofimovich changed:
What|Removed |Added
CC||slyfox at gcc dot gnu.org
---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111559
Andrew Pinski changed:
What|Removed |Added
CC||hubicka at gcc dot gnu.org
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