Toolchain/Patches/gcc/0005-i386-Disable-math-errno-for-SerenityOS.patch


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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Daniel Bertalan <dani@danielbertalan.dev>
Date: Mon, 16 May 2022 15:04:33 +0200
Subject: [PATCH] i386: Disable math errno for SerenityOS

SerenityOS uses exceptions for math error handling, which allows the
compiler to do more optimizations on calls to math functions. This patch
has the effect of setting -fno-math-errno by default.
---
 gcc/common/config/i386/i386-common.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gcc/common/config/i386/i386-common.cc b/gcc/common/config/i386/i386-common.cc
index 07fdd045f3032a445a0be45fa62eab9636c3ce2f..6e241956311fbcee3d7e04c7a30f4b73cd61877f 100644
--- a/gcc/common/config/i386/i386-common.cc
+++ b/gcc/common/config/i386/i386-common.cc
@@ -1707,6 +1707,10 @@ ix86_option_init_struct (struct gcc_options *opts)
        avoid calling them when that's the only reason we would.  */
     opts->x_flag_errno_math = 0;
 
+#ifdef TARGET_SERENITY
+  opts->x_flag_errno_math = 0;
+#endif
+
   opts->x_flag_pcc_struct_return = 2;
   opts->x_flag_asynchronous_unwind_tables = 2;
 }