update from releases/gcc-11-branch (#1996858)
build target shared libraries with -Wl,-z,relro,-z,now
add mwaitintrin.h on x86 (#2013860)
improve generated code with extern thread_local constinit vars
add support for C++20 #__VA_OPT__
add bundled(libbacktrace) and bundled(libffi) provides (#1993932)

bootstrap with -Wl,-z,relro,-z,now, apply libgcc hardening patch (#1988450)
fix libsanitizer with non-constant SIGSTKSZ (#1992727)

enable LTO profiledbootstrap on all arches (#1986141)

Rebuild with changed aarch64 build flags (#1984652)

update from releases/gcc-11-branch (#1986836)
GCC 11.2 release
PRs middle-end/101586, rtl-optimization/101562
enable LTO profiledbootstrap on x86_64, i?86, ppc64le and s390x for rhel9

drop patch that retained broken std::call_once symbols

update from releases/gcc-11-branch
PRs c++/100876, c++/100879, c++/101106, c/100619, c/100783, fortran/95501,
asm/100785,
end/100250, middle-end/100307, middle-end/100574,
end/100684, middle-end/100732, middle-end/100876,
end/101062, middle-end/101167, target/99842, target/99939,

update from releases/gcc-11-branch
PRs bootstrap/100731, c++/91706, c++/91859, c++/95719, c++/100065,
end/100576, middle-end/100898, middle-end/101009,
optimization/100342, rtl-optimization/100590,
optimization/101008, target/100333, target/100885, target/100887,
optimization/100934,
optimization/100981

NVR bump to enable rebuild in side tag

update from releases/gcc-11-branch
PRs bootstrap/100552, c++/100205, c++/100261, c++/100281, c++/100367,
end/100471,
end/100508, middle-end/100509, preprocessor/100392,
optimization/100492, tree-optimization/100519

update from releases/gcc-11-branch
PRs c++/98032, c++/100319, c++/100362, c/100450, fortran/100274,
optimization/84878, rtl-optimization/100225,
optimization/100230, rtl-optimization/100263,
optimization/100411, target/99988, target/100217, target/100232,
optimization/96513,
optimization/100253, tree-optimization/100278,
optimization/100329, tree-optimization/100414
fix build with removed linux/cyclades.h header (PR sanitizer/100379)
fix up mausezahn miscompilation (#1958887, PR tree-optimization/100566)

update from releases/gcc-11-branch
GCC 11.1 release
PRs c++/93383, c++/95291, c++/96380, c++/99200, c++/99683, c++/100161,
optimization/100254, target/98952, target/100200,
optimization/100239
fix ICE in aarch64_add_offset_1_temporaries (PR target/100302)

update from trunk and releases/gcc-11 branch
GCC 11.1-rc2
PRs libstdc++/100179, target/100182

update from trunk and releases/gcc-11 branch
GCC 11.1-rc1
PRs ada/99360, c++/97536, c/100143, d/98058, d/98457, d/98494, d/98584,
optimization/99927, target/100108, testsuite/100176,
optimization/100081
fix a cprop -fcompare-debug bug (PR rtl-optimization/100148)

update from trunk
PRs analyzer/98599, analyzer/99042, analyzer/99212, analyzer/99774,
end/55288, middle-end/84877,
end/84991, middle-end/84992, middle-end/86058,
end/90779, middle-end/98088, middle-end/99883,
end/99989, preprocessor/99446, rtl-optimization/98601,
optimization/98689, rtl-optimization/99596,
optimization/99905, rtl-optimization/99929,
optimization/100066, sanitizer/99877, sanitizer/100114,
optimization/82800, tree-optimization/97513,
optimization/98736, tree-optimization/99873,
optimization/99880, tree-optimization/99924,
optimization/99947, tree-optimization/99954,
optimization/100053
for %{rhel} == 9, default to -march=z14 -mtune=z15 on s390x and
mcpu=power9 -mtune=power9 on ppc64le

for %{rhel} == 9, default to -march=z14 -mtune=z15 on s390x and
mcpu=power9 -mtune=power9 on ppc64le