[PATCH] D27123: Add AVR target and toolchain to Clang

[Jonathan Roelofs via Phabricator via cfe-commits]

jroelofs added a comment.

In https://reviews.llvm.org/D27123#614313, @saaadhu wrote:

> Add testcases to test/Preprocessor/init.c


Awesome, thanks!

> Correct types for WChar and WInt
> 
> The ABI is documented in the avr-gcc wiki (https://gcc.gnu.org/wiki/avr-gcc)
>  I took the output of a trunk build of avr-gcc -dM -E and put that in the Preprocessor/init.c testcase, removing everything clang does not define.

Good plan.

> The conflicting defines were
> 
> 1. DBL and LDBL related defines - clang appears to consider doubles as 64 bit even if DoubleWidth is 32 bit

I /think/ you need to set LongDoubleFormat for that to work.

> 2. SIG_ATOMIC defines.

What are the differences there?


https://reviews.llvm.org/D27123