- Update to version 18.1.4.
* Fixes an issue with Arm64EC code generation where calls to some
intrinsics implemented in compiler-rt used the wrong name
mangling, eventually resulting in unresolved symbol errors
during linking.
* Fixed an incorrect poison-generating flag preservation in
`InstSimplify`. It will fix a miscompilation on RISCV, which
turns the incorrect `or disjoint` into an `add`.
* Save/restore routines for RV32E/RV64E are added to compiler-rt.
* Fix regressions introduced in LLVM 18.1.3 in MIPS atomicrmw
min/max codegen.
- Include module files for libc++ in libc++-devel.
- Rebase llvm-do-not-install-static-libraries.patch.