15.0.0/gentoo/78_all_gcc_don-t-enable-fext-dce-with-O2-for-now.patch


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From 86de2fd7550f75a318aa9819b115487cd850b4fc Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Mon, 15 Jul 2024 00:32:18 +0100
Subject: [PATCH] gcc: don't enable -fext-dce with -O2 for now

There's too many bugs involving it for now.

    gcc/
            * opts.cc (default_options_table): Don't enable ext-dce at -O2

Bug: https://gcc.gnu.org/PR115876
Bug: https://gcc.gnu.org/PR115877
Bug: https://gcc.gnu.org/PR115912
Bug: https://gcc.gnu.org/PR115916
Bug: https://gcc.gnu.org/PR115927
---
 gcc/opts.cc | 1 -
 1 file changed, 1 deletion(-)

diff --git a/gcc/opts.cc b/gcc/opts.cc
index be90a632338f..e1a1bdf15822 100644
--- a/gcc/opts.cc
+++ b/gcc/opts.cc
@@ -634,7 +634,6 @@ static const struct default_options default_options_table[] =
     { OPT_LEVELS_2_PLUS, OPT_fdevirtualize, NULL, 1 },
     { OPT_LEVELS_2_PLUS, OPT_fdevirtualize_speculatively, NULL, 1 },
     { OPT_LEVELS_2_PLUS, OPT_fexpensive_optimizations, NULL, 1 },
-    { OPT_LEVELS_2_PLUS, OPT_fext_dce, NULL, 1 },
     { OPT_LEVELS_2_PLUS, OPT_fgcse, NULL, 1 },
     { OPT_LEVELS_2_PLUS, OPT_fhoist_adjacent_loads, NULL, 1 },
     { OPT_LEVELS_2_PLUS, OPT_findirect_inlining, NULL, 1 },
-- 
2.45.2