[gentoo-commits] proj/gcc-patches:master commit in: 11.3.0/gentoo/

["Sam James" <sam@gentoo.org>]

commit:     7e2dec9de3d94ad18c2136f9ef8dbd48c1a5bdf4
Author:     Sam James <sam <AT> gentoo <DOT> org>
AuthorDate: Sat Jan  8 03:06:25 2022 +0000
Commit:     Sam James <sam <AT> gentoo <DOT> org>
CommitDate: Sat Jan  8 03:06:50 2022 +0000
URL:        https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=7e2dec9d

11.3.0: add PR103910 backport (OpenJDK ICE with PCH)

Bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103910
Bug: https://bugs.gentoo.org/822690
Signed-off-by: Sam James <sam <AT> gentoo.org>

 .../gentoo/76_all_all_PR103910_12_ICE-on-PCH.patch | 35 ++++++++++++++++++++++
 11.3.0/gentoo/README.history                       |  3 ++
 2 files changed, 38 insertions(+)

diff --git a/11.3.0/gentoo/76_all_all_PR103910_12_ICE-on-PCH.patch b/11.3.0/gentoo/76_all_all_PR103910_12_ICE-on-PCH.patch
new file mode 100644
index 0000000..358b9b3
--- /dev/null
+++ b/11.3.0/gentoo/76_all_all_PR103910_12_ICE-on-PCH.patch
@@ -0,0 +1,35 @@
+https://bugs.gentoo.org/822690
+https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103910
+
+From d243f4009d8071b734df16cd70f4c5d09a373769 Mon Sep 17 00:00:00 2001
+From: Andrew Pinski <apinski@marvell.com>
+Date: Wed, 5 Jan 2022 22:00:07 +0000
+Subject: [PATCH] Fix target/103910: missing GTY on x86_mfence causing PCH
+ usage to ICE
+
+With -O3 -march=opteron, a mfence builtin is added after the loop
+to say the nontemporal stores are no longer needed. This all good
+without precompiled headers as the function decl that is referneced
+by x86_mfence is referenced in another variable but with precompiled
+headers, x86_mfence is all messed up and the decl was GC'ed away.
+This fixes the problem by marking x86_mfence as GTY to save/restore
+during precompiled headers just like most other variables in
+the header file.
+
+Committed as obvious after a bootstrap/test on x86_64-linux-gnu.
+
+gcc/ChangeLog:
+
+	PR target/103910
+	* config/i386/i386.h (x86_mfence): Mark with GTY.
+--- a/gcc/config/i386/i386.h
++++ b/gcc/config/i386/i386.h
+@@ -486,7 +486,7 @@ extern unsigned char ix86_prefetch_sse;
+ 
+ /* Fence to use after loop using storent.  */
+ 
+-extern tree x86_mfence;
++extern GTY(()) tree x86_mfence;
+ #define FENCE_FOLLOWING_MOVNT x86_mfence
+ 
+ /* Once GDB has been enhanced to deal with functions without frame

diff --git a/11.3.0/gentoo/README.history b/11.3.0/gentoo/README.history
index bd234ed..1faa3d6 100644
--- a/11.3.0/gentoo/README.history
+++ b/11.3.0/gentoo/README.history
@@ -1,3 +1,6 @@
+3		8 January 2022
+	+ 76_all_all_PR103910_12_ICE-on-PCH.patch
+
 2		7 December 2021
 	+ 01_all_default-fortify-source.patch
 	+ 02_all_default-warn-format-security.patch