enable GDC on aarch64

update from releases/gcc-12 branch
GCC 12.1 release
PRs c++/67048, c++/106369, c/106016, d/106623, d/106638, lto/106334,
end/106492, tree-optimization/106513
fix an if-conversion wrong-code bug (PR rtl-optimization/106590)
implement C++23 P2327R1 - de-deprecating volatile compound operations - as

update from releases/gcc-12 branch
PRs analyzer/105285, analyzer/106204, analyzer/106225, c++/53164,
end/105965, middle-end/106027,
end/106144, middle-end/106331, middle-end/106449,
optimization/105041, rtl-optimization/106032,
optimization/105665, tree-optimization/105860,
optimization/105946, tree-optimization/105969,
optimization/105971, tree-optimization/106063,
optimization/106087, tree-optimization/106112,
optimization/106114, tree-optimization/106131,
optimization/106189

fix up libtsan on s390x

update from releases/gcc-12 branch
PRs c++/49387, c++/102307, c++/102651, c++/104470, c++/105491, c++/105589,
profile/105535, ipa/100413, ipa/105600, ipa/105639, ipa/105739,
end/105537,
end/105604, middle-end/105711, middle-end/105951,
end/105998, middle-end/106030, other/105527,
optimization/105455, rtl-optimization/105559,
optimization/105577, sanitizer/105714, sanitizer/105729,
optimization/103116,
optimization/105431, tree-optimization/105458,
optimization/105528, tree-optimization/105562,
optimization/105618, tree-optimization/105726,
optimization/105736, tree-optimization/105786,
optimization/105940
enable tsan and lsan on s390x (#2101610)
trim RHEL fortran patches
fix nvptx build (PRs bootstrap/105551, target/105938)

update from releases/gcc-12 branch
GCC 12.1 release
PRs c++/105476, libstdc++/103911, libstdc++/105441, libstdc++/105502,
end/105376, middle-end/105461, target/102059, testsuite/105433,
optimization/105394, tree-optimization/105437,
optimization/105484

fix annobin plugin conditional to build for ELN

update from trunk and releases/gcc-12 branch
GCC 12.1-rc1
PRs analyzer/105252, analyzer/105264, analyzer/105365, analyzer/105366,
profile/105282,
end/104492,
optimization/105231, rtl-optimization/105314,
optimization/105333, sanitizer/105396, target/89125,
optimization/100810, tree-optimization/103941,
optimization/104010, tree-optimization/105219,
optimization/105254, tree-optimization/105276,
optimization/105312, tree-optimization/105368,
optimization/105374

update from trunk
PRs c++/97296, c++/98249, c++/100111, c++/103105, c++/104142, c++/104669,
end/105253, middle-end/105259,
optimization/105211, target/95325, target/97348, target/101755,
optimization/104912, tree-optimization/105226,
optimization/105232, tree-optimization/105235,
optimization/105250, tree-optimization/105263

update from trunk
PRs analyzer/102208, analyzer/103892, c++/91618, c++/92385, c++/96604,
end/105140, middle-end/105165,
optimization/104985, target/101908, target/102024, target/103147,
optimization/102586,
optimization/103761, tree-optimization/104639,
optimization/104645, tree-optimization/105132,
optimization/105142, tree-optimization/105148,
optimization/105150, tree-optimization/105163,
optimization/105173, tree-optimization/105175,
optimization/105185, tree-optimization/105189,
optimization/105198, tree-optimization/105218
build annobin gcc plugin as part of gcc build into gcc-plugin-annobin

update from trunk
revert delayed parse DMI change (PR c++/96645)
fix up aarch64 make install

update from trunk
PRs ada/104767, ada/104861, analyzer/95000, analyzer/99771,
end/90115,
end/98420, middle-end/99578, middle-end/100680,
end/102330, middle-end/103597, middle-end/104086,
end/104285, middle-end/104436, middle-end/104774,
end/104786, middle-end/104869, middle-end/104885,
end/104892, middle-end/104966, middle-end/104971,
end/104975, middle-end/105032, middle-end/105049, other/65095,
optimization/103775,
optimization/104814, rtl-optimization/104961,
optimization/104989, rtl-optimization/105028,
optimization/105091, sanitizer/105093, target/86722, target/91229,
optimization/80334, tree-optimization/84201,
optimization/90356, tree-optimization/98335,
optimization/100834, tree-optimization/101895,
optimization/102008, tree-optimization/102586,
optimization/102645, tree-optimization/102943,
optimization/104645, tree-optimization/104755,
optimization/104851, tree-optimization/104880,
optimization/104941, tree-optimization/104942,
optimization/104960, tree-optimization/104970,
optimization/105012, tree-optimization/105053,
optimization/105056, tree-optimization/105070,
optimization/105080, tree-optimization/105094,
optimization/105109

fix up promoted SUBREG handling (#2045160, PR rtl-optimization/104839)
fix up check for asm goto (PR rtl-optimization/104777)

update from trunk
PRs analyzer/101983, fortran/99585, fortran/104430, libstdc++/104807,
end/104381, target/99297, target/104779, target/104794,
optimization/104782, tree-optimization/104825
fix build on i686 where gnat1 was hanging (PR target/104838,

update from trunk
PRs analyzer/103521, analyzer/104434, c++/70077, c++/79493, c++/103443,
profile/104677, ipa/104533, ipa/104648,
end/80270,
end/100400, middle-end/102276, middle-end/103836,
end/103984, middle-end/104061, middle-end/104132,
end/104133, middle-end/104529, middle-end/104540,
end/104550, middle-end/104558, middle-end/104679,
end/104721, middle-end/104757, middle-end/104761,
end/104784, rtl-optimization/104154, rtl-optimization/104589,
optimization/104637, rtl-optimization/104686, target/87496,
optimization/91384, tree-optimization/101636,
optimization/103037, tree-optimization/103845,
optimization/103856, tree-optimization/104601,
optimization/104644, tree-optimization/104675,
optimization/104676, tree-optimization/104700,
optimization/104715, tree-optimization/104716
fix constraints on s390x conditional trap (PR target/104775)

update from trunk
PRs analyzer/104524, analyzer/104560, analyzer/104576, c++/85493,
end/104355, middle-end/104522,
optimization/104447, rtl-optimization/104498,
optimization/104544, sanitizer/102656, target/99708, target/99881,
optimization/96881, tree-optimization/103771,
optimization/104519, tree-optimization/104526,
optimization/104543, tree-optimization/104551,
optimization/104582, tree-optimization/104604