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https://bugs.gentoo.org/746578
https://gcc.gnu.org/PR97295
From 508e2d88a4c512e8b8685cf5ba201ad48e6bb58d Mon Sep 17 00:00:00 2001
From: Martin Liska <mliska@suse.cz>
Date: Tue, 13 Oct 2020 16:44:47 +0200
Subject: [PATCH] IPA: fix profile handling in IRA
gcc/ChangeLog:
PR ipa/97295
* profile-count.c (profile_count::to_frequency): Move part of
gcc_assert to STATIC_ASSERT.
* regs.h (REG_FREQ_FROM_BB): Do not use count.to_frequency for
a function that does not have count_max initialized.
---
gcc/profile-count.c | 4 ++--
gcc/regs.h | 3 ++-
2 files changed, 4 insertions(+), 3 deletions(-)
--- a/gcc/profile-count.c
+++ b/gcc/profile-count.c
@@ -270,8 +270,8 @@ profile_count::to_frequency (struct function *fun) const
return BB_FREQ_MAX;
if (*this == zero ())
return 0;
- gcc_assert (REG_BR_PROB_BASE == BB_FREQ_MAX
- && fun->cfg->count_max.initialized_p ());
+ STATIC_ASSERT (REG_BR_PROB_BASE == BB_FREQ_MAX);
+ gcc_assert (fun->cfg->count_max.initialized_p ());
profile_probability prob = probability_in (fun->cfg->count_max);
if (!prob.initialized_p ())
return REG_BR_PROB_BASE;
--- a/gcc/regs.h
+++ b/gcc/regs.h
@@ -128,7 +128,8 @@ extern size_t reg_info_p_size;
or profile driven feedback is available and the function is never executed,
frequency is always equivalent. Otherwise rescale the basic block
frequency. */
-#define REG_FREQ_FROM_BB(bb) (optimize_function_for_size_p (cfun) \
+#define REG_FREQ_FROM_BB(bb) ((optimize_function_for_size_p (cfun) \
+ || !cfun->cfg->count_max.initialized_p ()) \
? REG_FREQ_MAX \
: ((bb)->count.to_frequency (cfun) \
* REG_FREQ_MAX / BB_FREQ_MAX) \
--
2.28.0
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