tree 3dda364c36220142e123ed89defd6d6af65a28b9
parent e62081c8966adfcf0b269442846ecc3781a9f7c4
author Slava Zakharin <szakharin@nvidia.com> 1658288398 -0700
committer Copybara-Service <copybara-worker@google.com> 1659724571 -0700

[flang] Propagate lowering options from driver.

This commit addresses concerns raised in D129497.

Propagate lowering options from driver to expressions lowering
via AbstractConverter instance. A single use case so far is
using optimized TRANSPOSE lowering with O1/O2/O3.

bbc does not support optimization level switches, so it uses
default LoweringOptions (e.g. optimized TRANSPOSE lowering
is enabled by default, but an engineering -opt-transpose=false
option can still override this).

Differential Revision: https://reviews.llvm.org/D130204

GitOrigin-RevId: f1eb945f9a5037b1fac6da02405047b24c0c2de5