v1.2.4.12

What's Changed

Breaking Changes 🛠

• Replace IR::getBitType with IR::Type_Bits::get. by @fruffy in #4669
• Make the new operator protected for some IR types. by @fruffy in #4670

P4 Specification Implementation

• [#4656] Explicitly delay constant folding of only action enum IR::SwitchCase label expressions, instead of delaying constant folding of all IR::Mux expressions by @kfcripps in #4657
• Changes for for loops by @ChrisDodd in #4562

Changes to the Compiler Core

• Use check_include_file_cxx instead of check_include_file to find mm_malloc.h by @fruffy in #4649
• Move IRUtils Literal get functions to the respective IR members. Add stringliteral get function. by @fruffy in #4623
• Improve error message when shifting int by non-const by @vlstill in #4653
• Fixes to lib/hash and lib/big_int_util. by @fruffy in #4655
• Link against the Boehm-Demers-Weiser Garbage Collector using FetchContent. by @fruffy in #3930
• Explicitly include hash.hpp for Ubuntu 18.04. by @fruffy in #4664
• RemoveUnusedDeclarations - make helpers protected by @ChrisDodd in #4668
• Generalization & minor refactoring in RenameMap by @vlstill in #4677
• Add string_view and string conversion operators and functions to cstring by @vlstill in #4676
• Facilitate inheritance from RenameSymbols pass, deduplicate code by @vlstill in #4682
• Set type for LAnd, LOr, LNot to be Type_Boolean if unknown. by @fruffy in #4612
• Improve BUG_CHECK internals by @asl in #4678
• Workaround for gcc-11.4/draft 2x spec flaw by @ChrisDodd in #4679
• irgen: Generate explicit instantiations by @ChrisDodd in #4681

Changes to the Control Plane

• Add support for new platform property annotations for P4Runtime. by @jonathan-dilorenzo in #4611

Changes to the eBPF Back Ends

• Fix missing declaration of custom externs in the generated eBPF/uBPF header file. by @fruffy in #4644

Changes to the TC Back End

• Support for Register Extern in P4TC by @komaljai in #4671
• Added changes for default hit actions for tc backend by @Sosutha in #4673
• Fix extern pipeline name in template file by @komaljai in #4675

Changes to the P4Tools Back End

• Merge TestgenCompilerTarget into TestgenTarget. by @fruffy in #4650

Other Changes

• P4Tc - Change parameter for kfunc 'bpf_p4tc_entry_create_on_miss' by @komaljai in #4637
• Add support for a clang-tidy linter to CMake. Add a files utility function to P4CUtils.cmake. by @fruffy in #4254
• Only emit the warning on EXPORT_COMPILE_COMMANDS when there are clang-tidy files to lint. by @fruffy in #4665
• Aggressively clean up the Protobuf CMake dependency. by @fruffy in #4543
• Remove no-longer-used *.p4info.txt files by @jafingerhut in #4687
• Add a release template to the compiler. by @fruffy in #4692
• Automated Release v1.2.4.12 by @github-actions in #4699

Full Changelog: v1.2.4.11...v1.2.4.12