LOG.glcc

- Adapted for dev7 backward incompatible changes
- Added gigatron/idioms.h
- Support for opcodes FILL and BLIT
- Redesigned binary to ascii routines 
- Improved fp and shift routines
- Fixed minor stdio console bug
- Better runtime for ROMv4.

GLCC_RELEASE_2.5

- Bug fixes
- Slightly faster runtime

GLCC_RELEASE_2.4

- Subtle optimization improvements.
- Dev7 no longer use runtime code to save/restore registers.
- Added support for vsave/vrestore/exch and thread demo
- Eliminated B0/B1 scratch registers (abi change)
- Faster long multiplication
- Added support for addhi and cpu flags
- Fixed memswp

GLCC_RELEASE_2.3

- Faster fp
- Better use of MOV instructions on dev7
- Support for MOVW instruction on dev7
- Better handling of source code with CRLF line termination
- New <conio.h> interface.
- Choice of low level input routines via <gigatron/kbget.h>
- Choice of low level input routines via <gigatron/print.h>
- New linker option --option=STRING (see above include files)
- Decoupled stdio implementation takes less space in typical cases.
- Attribute syntax is closer to gcc's
- Pragmas glcc option and glcc lib

GLCC_RELEASE_2.2

- Stdio no longer buffers (like avr libc)
- Avoid zero page variables used by the loader
- More compact console code
- Added include file sys/pragma.h with attributes
- Added __attribute keyword with nohop, place, org
- Added SYS_Sprite
- Added _memswp
- Improved lburg with nonconstant cost in nonterminal closures
- Support for code that runs on dev/vx0/dev7 (-rom=v6--)
- faster ldiv and fp

GLCC_RELEASE_2.1

- updated dev7 support
- glink --onload=xxx arranges for xxx to be called early

GLCC_RELEASE_2.0

- Improved profiler
- Added map128k for dev128k7.rom
- Best effort support for vx0 instruction set (-cpu=6)
- Support for dev7 instruction set (-cpu=7)
- New state-based peephole optimizer
- Support for __near variable in page zero
- Support for __near and __far keywords
- Added placement overrides in map files
- Runtime: faster long addition and subtraction
- Library: slightly simplified stdio (less buffering)
- Library: added clock() function using vIRQ
- Library: redirected SIGVIRQ through clock vIRQ
- Library: no SIGVIRQ overhead unless used

GLCC_RELEASE_1.5

- Option -mapdir
- New codespec options ORG and PLACE
- Speed up linker relaxation
- Configurable register addresses
- Longs are not aligned on four-byte boundaries
- Updated cpu6 support for new snapshot of ROMvX0.
- Added support for ROMvX0 native longs
- Added map 512k supporting the Gigatron 512k
- Runtime: Simplified floating point addition
- Library: added minimal printf function mincprintf
- Library: SYS_ScanMemoryExt, SYS_OsCall
- Library: Fixed printf corner cases

GLCC_RELEASE_1.4

- Added option -V to report glcc version from git tags
- Added option --frags to repor final memory map
- Added macro _GLCC_VER
- Library: Fixed fopen with "r+" argument
- Library: folded _exitm into _start
- Library: setjmp also saves vSP
- Library: SYS_SetMode, SYS_ReadRomDir, SYS_Exec
- Library: Added missing memcmp
- Library: More compact printf and console.
- Library: Added cprintf

GLCC_RELEASE_1.3

- Added support for compilation with CMake on Unix and Windows
- Deprecated cmd directory for Windows install. Instead we install cmd files in bin.
- More aggressive allocation of function arguments to registers.
- More freedom to allocate long and float vars to registers.
- Imported popular lcc changes: cpp improvements
- Imported popular lcc changes: multiplication simplification, error diagnosis.
- Fixed LCC allocator alignment constraint.
- Added support for SYS_ScanMemory from dev.rom
- Doc improvements

GLCC_RELEASE_1.2

- Reenginered exception handling for lower footprint
- Improved preralloc to optimize cross-subtrees leading to better and safer code
- Fixed preralloc bug identified by axelb

GLCC_RELEASE_1.1

- ...