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Walk-through flang – Part 2

In the previous installment of this series we saw basically how to install flang and we ran a simple smoke test. In this post we will see a high level overview of what happens when we compile a Fortran program using flang. We will also compare it with what usually happens with clang.

Walk-through flang – Part 1

Flang is an open source project to create a Fortran compiler for LLVM. It is based on NVIDIA/PGI Fortran and it has been released under Apache License 2.0. In this series we will do a walk-through the code of this compiler and how it has been integrated in the existing LLVM infrastructure.

Compilers as a memory error detectors

This is a small anecdote of something that happened me the other day.

Whose is this optimization?

Today we will toy around a very simple optimization in clang and discuss a bit about separation of concerns when optimizing code.

Introduction to the gfortran array descriptor

With the approval of Fortran 90, its array capabilities were largely improved. While still far from languages like APL, the extra functionality required a rethinking of the concept array in Fortran. This led to the need for array descriptors in the language.

How (not) to write a C++ front end – Part 3

In the previous installment we talked about the parsing technology we used, which looks like the canonical academic approach to parsing. In this chapter we will see some dificulties we encountered along the years.

How (not) to write a C++ front end – Part 2

In the previous installment I gave some context about the existence of Mercurium as a tool. In this chapter we will start digging into the parsing technology used.

How (not) to write a C++ front end – Part 1

As part of the work I did in my previous employer, we had to develop a C++ front end. This is never an easy task so I will use this series to share some experiences while developing it.

A tiny GCC front end – Part 11

Our tiny language features a few types: int, float, bool, string and arrays of those types. We can even declare new type names based on other types but it still missing a record type. Today we will address this.

A tiny GCC front end – Part 10

Today we will add a relatively simple feature that will be very useful for a future extension: type declarations.

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