Still get 'Undefined external function: llvm.fshl.i32' error without inline keyword

[TommyJerryMairo]

I'm currently practicing OpenCL programming by implementing an SHA256. When debugging the kernel code, Oclgrind keeps promoting an error message: Undefined external function: llvm.fshl.i32. I've checked the wiki and it reads that this error ususally comes with misusages of the inline keywork. However, there's no inline in my kernel code.

The Oclgrind instance is freshly built from the latest commit accf518f8623548417c344a0193aa9b531cc9486 with clang version 14.0.6 on ArchLinux. I've attached the kernel code and host code to this issue, any ideas on why this happens?

Attachment: sha256_opencl.zip

[Dolaned]

also having this issue

[olepoeschl]

I suppose the inline instruction is generated by the compiler optimization.
Try running it with --build-options -O0 to turn off the compiler optimizations.
Worked for me.