This lets the package build on NetBSD/i386.
libFirm 1.21.0 (2012-11-16)
---------------------------
* Improvements of x86 backend (esp. x87 floatingpoint code)
* Improvements to sparc backend (better use of delay slots)
* Improved local optimisation rules (esp. conversions)
* Make compiler more deterministic
* Bugfixes
libFirm 1.20.0 (2011-12-07)
---------------------------
* Further improvemens to sparc backend (SPEC2000 works with softfloat)
* Tuning of x86 backend
* Software floatingpoint lowerer
* Fixed firm profiling
* New pass management allowing to specify pre-/postconditions for passes
* Remove dependency on liblpp, add support for gurobi ILP solver
* Experimental dwarf debugging support
* Code cleanups, refactoring
* Restructured API documentation
* Bugfixes (we did alot of csmith testing)
libFirm 1.19.1 (2011-05-17)
---------------------------
* Fix some set_XXX functions not being exported in the shared library
libFirm 1.19.0 (2011-03-15)
---------------------------
* Includes "SSA-Based Register Allocation with PBQP"
* Improved Sparc backend
* New (optimistic) fixpoint based value-range propagation/bit analysis
* Code cleanup and refactoring
* Bugfixes
libFirm 1.18.1 (2010-05-05)
---------------------------
* Fix bug where stackframe was not always setup for -fno-omit-frame-pointer
* bugfixes in Asm handling
libFirm 1.18.0 (2010-04-15)
---------------------------
* Includes "Preference Guided Register Assignment" algorithm
* Experimental Value Range Propagation
* Loop Inversion and experimental Loop Unrolling code
* Simplified construction interface. Most node constructors don't need graph/block arguments anymore.
* Reworked type interface. Type names are optional now. Support for additional linkage types that among others support C++ 'linkonce' semantics now.
* Small changes in constructors and node getters/setters (mostly adding 'const' to some getters)
* code cleanup, smaller improvements in API specification
* bugfixes
Changes in 1.17.0:
* bugfixes
* advanced load/store optimisation which hoists loads out of loops
* Internal restruturing: Alot of node structures are automatically generated
from a specification file now.
* Add support for multiple calling conventions
* New experimental support for reading and writing programgraphs to disk
* Support and optimisations for trampolines
* fix PIC support
Changes in 1.16.0:
* bugfixes
* Implementation of Clicks Combined Analysis/Optimisations
* New switch lowering code
* support for global asm statements
* improved asm support
* PIC support for Mac OS X
* New register pressure minimizing scheduler
* Improvements to spill algorithm
* fix endless loop problems
* further improve inlining heuristics
* improve peephole optimisations for x86
* bugfixes
libFIRM provides a graph-based intermediate representation (IR), which
operates exclusively in SSA-form, starting at IR construction until
assembler code emission. It offers many analyses and optimizations,
provides extensive debug support and includes a backend framework.
* analyses: dominance, loop tree, execution frequency, control
dependencies, call graph, rapid type, def-use, alias analysis,
class hierarchy analysis
* optimizations: dead code elimination (happens implicitly), constant
folding, local common subexpression elimination, arithmetic identities
(happens on the fly), unreachable code elimination, global common
subexpression elimination, code placement, strength reduction,
scalar replacement, if-conversion, load/store optimization, control
flow optimizations, reassociation, partial condition evaluation,
tail recursion elimination, inlining, procedure cloning
* enhanced debugging support: extensive checkers, breakpoints on node
creation, entity creation, graph dumping
* lowering of intrinsics, double word arithmetics, bitfields
* generic backend features:
* novel SSA based register allocator
* several SSA copy coalescing and spilling algorithms
* algorithms for instruction and basic block scheduling
* working ia32 backend, unfinished backends for MIPS, ARM, PPC32
* handwritten recursive descent C89/C99 frontend available (lang/cparser)
