[gcc/devel/modula-2] (53 commits) Merge branch 'master' into devel/modula-2.

[gcc/devel/modula-2] (53 commits) Merge branch 'master' into devel/modula-2.

[Gaius Mulley]

The branch 'devel/modula-2' was updated to point to:

 07395a6e22e... Merge branch 'master' into devel/modula-2.

It previously pointed to:

 183c1231175... gcc.cc externs used by front ends prefixed by fe.

Diff:

Summary of changes (added commits):
-----------------------------------

  07395a6... Merge branch 'master' into devel/modula-2.
  aeac414... Revert "Fix PR 67102: Add libstdc++ dependancy to libffi" [ (*)
  9099e0b... aix: AIX is not GLIBC. (*)
  480caa1... libfortran: Provide fallback __issignalingl for IBM extende (*)
  2e211a0... tree-optimization/104214 - amend PR100740 fix for pointer c (*)
  ab2a245... libgcc: Fix _Unwind_Find_FDE for missing unwind data with g (*)
  0d56eb9... Fortran: fix preprocessor condition (*)
  d0336ab... Fortran: do not run signaling testsuite on 32-bit x86/x86_6 (*)
  c0a4a65... Fortran: fix typo in signaling NaN testcase (*)
  f4ee27d... rs6000: Remove GCC 8.1 U10__float128 mangling compatibility (*)
  bb99171... Daily bump. (*)
  b8e4e48... Remove duplicate code block. (*)
  ae36f83... preprocessor: -Wbidi-chars and UCNs [PR104030] (*)
  e89d0be... Fortran: provide a fallback implementation of issignaling (*)
  4343f5e... rtl: builtins: (not just) rs6000: Add builtins for fegetrou (*)
  b1aa2a3... c++: Fix non-portable default argument of make_auto_1 [PR10 (*)
  2a908f3... c++: value category of compound object expr [PR104173] (*)
  978abe9... gcc-changelog: Be stricter for top-level dir. (*)
  f1af852... tree-optimization/102131 - fix niter analysis wrt overflow (*)
  2755037... acinclude.m4: Remove duplicite AC_DEFUN. (*)
  0ebb09f... options: Add EnumBitSet property support [PR104158] (*)
  9acd5a0... fortran: Extend -fconvert= option for ppc64le r16_ieee and  (*)
  cd0377a... options: Fix up -fsanitize-coverage= [PR104158] (*)
  385196a... options: Add EnumSet and Set property support [PR104158] (*)
  2c31a8b... properly disable -fsplit-stack on non-glibc targets [PR1041 (*)
  c106529... RISC-V: Fix testcase after bump isa spec version (*)
  ca2bbb8... RISC-V: Do not emit zcisr and zifencei if i-ext is 2.0 (*)
  98416db... RISC-V: Change default ISA version into 20191213 (*)
  634de54... Update the type of control.base after changed (*)
  add6bb5... RISC-V: Update testcases info with new implement info (*)
  7b84fa2... testsuite: Ignore pr104159 psabi warning. (*)
  4d23213... x86: Also check mode of memory broadcast in bcst_mem_operan (*)
  0c94070... Daily bump. (*)
  5163187... libstdc++: Fix std::spanstream move assignment [PR104032] (*)
  416b6fc... libstdc++: Use fast_float for long double if it uses binary (*)
  084680d... libstdc++: Restore support for unordered_map<const T, ...>  (*)
  2d8a9ad... libstdc++: Fix aliasing violation in std::shared_ptr [PR104 (*)
  2da90ad... c++: designated init of char array by string constant [PR55 (*)
  cbcf4a5... [aarch64/64821]: Simplify __builtin_aarch64_sqrt* into inte (*)
  603a9ab... contrib: filter out one more Clang warning. (*)
  9718bc4... c++: array temporary at file scope [PR104182] (*)
  053bcc9... c++: constexpr and -fno-elide-constructors [PR101072] (*)
  d43be9d... Daily bump. (*)
  9ea451e... ootstrap: Fix bootstrap with --disable-plugin [PR104176] (*)
  a1fb81b... testsuite: guard usage of _Float16 in analyzer test [PR1041 (*)
  45b999f... analyzer: fix ICE on vector casts [PR104159] (*)
  6c1a931... Fortran: fix simplification of TRANSFER for zero-sized char (*)
  0f4f9c0... toplevel: Remove accedentally checked in file (*)
  abe3a4f... Fix fold-vec-splat-floatdouble testsuite failure on power10 (*)
  9dd4435... Daily bump. (*)
  f9063d1... Mark XXSPLTIW/XXSPLTIDP as prefixed -- PR 104136 (*)
  60953a2... x86: Properly disable -fsplit-stack support on non-glibc ta (*)
  f36efe7... c-family: Fix up a -Wformat regression [PR104148] (*)

(*) This commit already exists in another branch.
    Because the reference `refs/heads/devel/modula-2' matches
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