COMP-Project: UCCOMPILER

This project was elaborated in the context of the Compilers course of the Informatics Engineering Course @University of Coimbra. (COMP-2020 UC)

Objective

The construction of a compiler for the "UC" programming language, a subset of the C programing language acording to the C99 standard.

Languages & Tools

• Lex (flex)
• Bison (yacc)
• LLVM (llvm-3.9)
• Clang (clang-3.9)

Other Tools Used

• valgrind
• gdb

Instalation

• cd src
• flex uccompiler.l && yacc uccompiler.y -d && clang-3.9 -Wall *.c -o uccompiler

Usage

• ./uccompiler < input.uc > output.out && llc-3.9 output.out && clang-3.9 output.s -o output
• The compiler can be tested using the test.sh shell script. To know more about it, execute it by following these steps:
  • chmod u+x test.sh
  • ./test.sh

Compiler flags

• -l: Perform a lexical analysis, reporting tokens found and lexical errors, and exits.
• -e1: Performs a lexical analysis, reporting only lexical errors and exits.
• -t: Performs a syntactic analysis, reporting lexical / syntactic errors, prints the syntax tree built during the parsing of the program if it is syntaticaly correct and exits.
• -e2: Performs a syntactic analysis, reporting only lexical or syntactic errors and exits.
• -s: Perform a semantic analysis (if there are no syntactic errors), reporting the
semantic errors, printing the contents of the symbol table(s) and the annotated abstract syntax tree (AST) and exits.
• -e3: Perform a semantic analysis (if there are no syntactic errors), reporting predetermined
semantic errors, and exits
• Default: Perform all stages of the source code analysis and emmit LLVM IR machine code that can be executed running the lli-3.9 on the output.out or by compiling it with llc-3.9 and using clang on the generated assembly file to allow execution

Collaborators

• Gabriel Fernandes