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xqb64 / ucc Public

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An optimizing compiler for a large subset of the C programming
language

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MIT license
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xqb64/ucc

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src             src                                  
tests @ 34426cb tests @ 34426cb                      
.gitignore      .gitignore                           
.gitmodules     .gitmodules                          
Cargo.lock      Cargo.lock                           
Cargo.toml      Cargo.toml                           
LICENSE         LICENSE                              
README.md       README.md                            
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  * README
  * MIT license

ucc

 

This is a Rust implementation of the C compiler from Nora Sandler's
book.

How it works

 

At the forefront is the compiler driver, which orchestrates the
compilation process---from lexing and parsing, through several stages
of semantic analysis, such as variable resolution, loop labeling, and
type checking. After generating an intermediate representation (IR),
the compiler passes it through an iterative optimization pipeline.
This pipeline leverages forward and backward data-flow analysis,
liveness analysis, and address-taken analysis to implement
optimizations such as constant folding, unreachable code elimination,
copy propagation, and dead store elimination. Finally, it generates
and optimizes the x86_64 assembly code using a graph coloring-based
register allocator with conservative coalescing, before emitting the
optimized code.

Status

 

  * [*] char (in both unsigned and signed variants)
  * [ ] short
  * [*] int (in both unsigned and signed variants)
  * [*] long (in both unsigned and signed variants)
  * [ ] float
  * [*] double
  * [*] void
  * [*] if/else
  * [ ] switch
  * [*] while
  * [*] do while
  * [*] for
  * [*] break
  * [*] continue
  * [ ] ConsideredHarmful
  * [*] static
  * [*] extern
  * [*] arrays
  * [*] structs
  * [*] sizeof
  * [ ] enums
  * [ ] unions
  * [ ] typedef

License

 

Licensed under the MIT license.

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An optimizing compiler for a large subset of the C programming
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