Use placeholder phi nodes as deleted temporaries (EnzymeAD#1270)

Add asserting vh (EnzymeAD#1238)

* Add asserting vh

* fix

* fix

* Add capi gutils erase/replace

Cumem (EnzymeAD#1234)

* tmp

* Cuda memory

* cleanup

* Add cuda stream create/destroy

* better inst noderivative error

* add stream sync

* add mem pool

optional use of blas copy for caching(EnzymeAD#1226)


* add runtime [de]activation of blas copy

CMake quality of life changes (EnzymeAD#1084)

* define and export some additional CMake targets

* specify which versions -lto-legacy-... applies to

* add small projects for testing `find_package`, `add_subdirectory`

* add workaround to support add_subdirectory

* change pass manager for llvm >= 15

* fix

* bump cmake version

* fix ci

* fix build

* fix build

* fix

* fix

* fix

---------

Co-authored-by: Sam Mish <mish2@llnl.gov>
Co-authored-by: William S. Moses <gh@wsmoses.com>

Add primal return option at llvm level (EnzymeAD#1194)

* Add primal return option at llvm level

* fix primret issue

Dbg tblgen (EnzymeAD#1190)

* fix fortran abi, support scal, WIP

* scal support, fix fortran abi, fix other things

* fix build

* fix format

---------

Co-authored-by: William S. Moses <gh@wsmoses.com>

Add utility to fix julia calling conv (EnzymeAD#1182)

* Add utility to fix julia calling conv

* fix

Update CMakeLists.txt

Tg blas3 (EnzymeAD#1117)

* removing manual blas support

* minimal blas generation

* add blas sanity checks

* emit handle_blas

* emit more parts

* emit caching

* finish rebasing of tblgen-blas

* finish refactor on latest main

* fix fwd-mode

* update tests

* fix Attribute settings

* fix tg for older llvm

* add more const and clarify comments

* add inactive fwd test

* disable dot fallback

* make BLAS fallback optional

* cleanup

* fixup

* cleanup

---------

Co-authored-by: William S. Moses <gh@wsmoses.com>