undefined intrinsic whit the latest version of the compiler (2022.2.0)

[AuroraPerego]

Step to reproduce the error:

git clone -b intrinsic-llvm [email protected]:AuroraPerego/pixeltrack-standalone.git
cd pixeltrack-standalone/

in the Makefile change the ONEAPI_BASE to ours

make environment
. env.sh
make -j `nproc` sycl

The error is the following:

InvalidFunctionCall: Unexpected llvm intrinsic:
 llvm.uadd.sat.i8
llvm-foreach:
dpcpp: fatal error: llvm-spirv command failed with exit code 6 (use -v to see invocation)

The line that gives the error is in src/sycl/plugin-PixelVertexFinding/gpuClusterTracksIterative.h line 155:

for (; p < hist->end(be); ++p)

A workaround is to use the flag -fno-sycl-early-optimizations

Note that the same happens with the open source compiler (clang 16.0.0), but didn't happen with dpcpp 2022.1.0