tree 524fdb027d24ab1df34f351ff77f5d14cf477cae
parent 03cfcc04082dae69913ebeeb32e16ecabf83221d
author Jean Perier <jperier@nvidia.com> 1633070562 +0200
committer Copybara-Service <copybara-worker@google.com> 1633071142 -0700

[flang] Improve runtime interface with C99 complex

Follow up of https://reviews.llvm.org/D83397.

In folding, make pgmath usage conditional to C99 complex
support in C++. Disable warning in such case.

In lowering, use an empty class type to indicate C99 complex
type in runtime interface.

Add a unit test enforcing C99 complex can be processed
by FIR runtime interface builder.

Differential Revision: https://reviews.llvm.org/D110860

GitOrigin-RevId: b7c07ce15ffe6da9dcd69d457a3eca987452edc7