Success compiling and running cuda_example.cu on Apple M1 Big sur

[dokipen3d]

This isn't really an 'issue' but I did have to go through some hoops to get this to work....

1. Use llvm@7 from homebrew
2. comment out line 35-83 in /llvm@7/7.1.0_2/lib/clang/7.1.0/include/cuda_wrappers/new to remove all of the ::operator free/new/deletes which cause errors when compiling cuda code
3. This is at the moment compiling under rosetta. I'm about to try aarch64 and will report back here.

I tried llvm 11 from the latest homebrew package but the hostraw.ll file contained unnamed function parameters (%0, %1) which it didn't seem to like.

hostraw.ll:9:46: error: expected ')' at end of argument list
define void @_Z18__device_stub__addPiS_(i32* %0, i32* %1) #0 {

the llvm 4 package from the install distro was tricky in that it didn't accept the version of macos (too early a version of clang?). I can't find where that argument is coming from/being generated.
error: invalid version number in '-mmacosx-version-min=11.1

Oh well, still a cool little project. I'll see if I can get anything more complicated running.

[dokipen3d]

Some other tests are having trouble again at the llvm ir stage...

/bin/patch_hostside: phiaddressspace-hostraw.ll:38:14: error: expected type
  %23 = fmul contract float %22, 3.500000e+00
             ^