460c77e Update CodeGen_PTX_Dev to use new PassManager (#6718)

I updated to main (ad1e7f6) and noticed that my pipeline took was much slower compared to Halide-v13.0.4. I ran git bisect and identified the above commit as the cause of a 18% regression in my pipeline on x86, i.e. my benchmark results:

Before: 0.5851s
After: 0.6914s

I'm not sure if I can share the details of my pipeline but if you have trouble reproducing the problem then let me know and I'll see what I can do.

llvm-version: llvmorg-13.0.0
cmake invocation:

cmake -G Ninja \
                 -DCMAKE_BUILD_TYPE=Release \
                 -DWITH_PYTHON_BINDINGS=ON \
                 -DPYTHON_EXECUTABLE=$CONDA_ENV/bin/python3.9 \
                 -DPython3_ROOT=$CONDA_ENV \
                 -DLLVM_TARGETS_TO_BUILD="host;JSBackend;WebAssembly" \
                 -DLLVM_INCLUDE_EXAMPLES=OFF -DLLVM_INCLUDE_TESTS=OFF -DCLANG_INCLUDE_TESTS=OFF \
                 ..

CPU: AMD EPYC 7742