fix pr92950.c test (#1784759)

fix wrong code emitted for movv1qi on s390x (#1784759)
fix wrong code with EH due to a bug in LRA (#1800526)

avoid folding shifts of vector types (#1740539)

backport ARMv8.3 pointer authentication patches (#1769573)

fix ICE with lambda in NSDMI (PR c++/66585, #1713056)
revert the change

fix pr63567-2.c and pr63567-4.c

fix mode mismatch in prepare_cmp_insn (#1641329, PR target/63442)
allow libitm to use HTM (#1659698)
fix up memset handling in DSE (#1640805, PR rtl-optimization/69891)
fix bits/bytes confusion in set_noop_p (#1594975, PR rtl-optimization/68814)
enable initializing statics with COMPOUND_LITERAL_EXPR in C99
fix PIC_OFFSET_TABLE_REGNUM (#1614326)
quash spurious -Wmissing-field-initializers warnings (#1633716, PR c/60784)
fix ICE with alias template (#1648161, PR c++/53658)

Avoid code generation bug due to incorrect CFG in the presence

back out the last change

adjust C++11 signatures to take a const_iterator (#1575888)

fix infinite looping in -fipa-cp-clone (#1546372)
don't look for vsld gcc.target/powerpc/pr72717.c

Fix two minor problems with the backported spectre updates

Backport various stack-clash and spectre fixes from upstream

backport s390 -mpic-data-is-text-relative feature (#1555397)
fix crash when write follows large read (#1463706)
fix emit_move_insn ICE (#1565536)
add missing rs6000-cpus.def (#1512202)

fix ICE when generating a vector shift by scalar (#1546728)

s390 retpoline support for spectre mitigation (#1552021)