LDC 1.34.0

(Changes since 1.34.0-beta2 are marked with (new).)

Big news

• Frontend, druntime and Phobos are at version 2.104.2. (#4440)
• Support for LLVM 16. The prebuilt packages use v16.0.6. (#4411, #4423)
  • We have come across miscompiles with LLVM 16's newly-enabled-by-default function specializations (on Win64 and macOS). To be on the safe side, LDC disables them by default for all targets via -func-specialization-size-threshold=1000000000 in etc/ldc2.conf (and separately for LTO on Posix platforms). To enable the function specializations, explicitly override it with e.g. -func-specialization-size-threshold=100 (the LLVM 16 default) and, for LTO on Posix, a similar LTO plugin option in the linker cmdline (see linker cmdline with -v).

Platform support

• Supports LLVM 11.0 - 16.0. Support for LLVM 9 and 10 was dropped.
• 64-bit RISC-V: Now defaults to -mattr=+m,+a,+f,+d,+c ('rv64gc' ABI) for non-bare-metal targets, i.e., if the target triple includes a valid operating system. (#4390) (new)

Bug fixes

• Fix function pointers/delegates on Harvard architectures (e.g., AVR). (#4432, #4465)