FEX-2103

Compatibility

• Support for unaligned atomic memory ops
• Thread local mman cache invalidation
• glib 2.32 support (cpuid fixes, faccessat2)
• cmpxchg flag fixes
• fixed cvtt* ops to actually truncate, both for x87 and sse
• Implemented BTC, BTR and BTS atomic variants
• Workaround crashes around exit_group for graceful exit
• Fixed SAR8 & SAR16 sign extension
• Added support for x87 rounding modes
• Added support for x87 precision modes
• Temporary fix for x87's frem
• Fixed select system calls to update the descriptors
• Fixed handling of invalid ops when multiblock is enabled
• Fixed an edge case bug in CreateElementPair
• Fixed BRK handling
• Fixed /proc/cpuinfo topology
• Fixed compilation of superblocks with more than 256 spills
• Fixed a bug in in the MUL -> SHL optimization

Performance

• Added ir-cache that halves loading times when enabled (--aotir-capture && --aotir-load)
• x87 ops no longer force interpreter for the entire superblock

Usability

• uname now returns the host name
• Added checks for python in the CMake files

Misc

• ThunkLibs now generate asm wrappers, so they can be compiled with older GCCs
• Asserts on unsupported atomic ops
• Removed erratic asserts in RA

FEX-2102

Compatibility

• Unaligned cmpxchg & cmpxchg8b on ARMv8.1+
• Mutliblock now gracefully handles unsupported / invalid instructions. This makes it safe to always enable multi block
• Several fixes for 32-bit binaries: branch handling, signal return, memory allocation, ioctl32 for x86-64 host
• Improved BRK handling

Perfomance

• Much reduced stuttering during JIT compilation. The JIT optimizer is now over 3x as fast.
• Per-thread IR Caching with cached RA, for faster recovery from code cache resets

Usability

• Defaults now to jit, multiblock, 5000 instructions.
• CPUID returns fex version

Misc

• Cleaned up IR printing, extended asm tests to test IR dumping & IR printing
• Integrated gcc target tests to our CI
• Removed many warnings

The detailed change log is available here