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47 lines
2.4 KiB
47 lines
2.4 KiB
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0.0.4 (8 August 2004)
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* Pluggable object models.
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* Problems with "gen-apply" on Win32 systems.
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* Optimize "if true goto" into "goto".
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* Peephole optimization on branches.
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* Adjust ARM codegen macros to support branch elimination instructions.
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* Redesign exception handling to use "setjmp" everywhere.
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* Remove C++ code from "libjit.so" so that it is a pure C library.
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* Use computed goto's in the interpreter if the compiler supports them.
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* Don't allow conditional branches to jump out of exception contexts.
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* Block movement to allow initialization code to be moved to the start
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of a function, or loop condition code to be moved to the end.
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* Rewrite the exception region routines to make them easier to use.
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* Add the "gen-sel" program, for creating instruction selectors.
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* Write instruction selectors for x86 and ARM (only x86 is enabled).
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* Portability fixes for ARM, PPC, Alpha, IA64, and amd64.
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* Clarify the description of LLVM, at the request of LLVM's author.
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* Deferred argument popping after function calls.
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* Add "--enable-interpreter" to force the interpreter to be used.
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* Implement a simple global register allocator based on usage counts.
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* Recognise increment and decrement idioms.
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* Align cache flushes properly (Miroslaw Dobrzanski-Neumann).
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* Querying of x86 cpuid where necessary.
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* Add a constant pool for ARM, to make constant loads more efficient.
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* Handle register pairs for 64-bit values properly.
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* Support for parameter areas on the stack, to reduce push/pop overhead.
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* Avoid unnecessary register spills if a value won't be used again.
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* Implement tail calls from a function to itself.
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* Optimize x86 prologs and epilogs to avoid doing unnecessry work.
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* Centralise the code that handles parameter passing.
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* Support for parallel builds.
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0.0.2 (13 May 2004)
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* Function and instruction building API basics in place, in C and C++.
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* Operations include arithmetic, overflow checking, conversion,
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mathematical (sin, sqrt, etc), branching, exception handling,
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function calls, structure types, and arrays.
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* Up-front or on-demand compilation and re-compilation.
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* Interpreter at par with instruction building requirements.
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* x86 and ARM in early stages (not enabled yet).
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* Register allocation for register-based and stack-based architectures.
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* Nested functions.
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* Dynamic Pascal language is usable, suitable for writing test cases.
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* Beginnings of ELF support for eventual ahead-of-time compilation.
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