Error when compiling for AVX512 target with 'disable-zmm' param

[petrsm]

When I try to compile some of our code for AVX512 with 'disable-zmm' parameter, I get following error:

"LLVM ERROR: Don't know how to split the result of this operator !"

Compiling without this parameter works fine. I was just curious if this option has (positive) impact
on performance of generated code.

Repro case attached.

repro.zip

[nurmukhametov]

The minimized reproducer is:

void foo(uniform float output[], float a, float b)
{
   float m = max(a, b);
   output[programIndex] = m;
}

Compile with: ispc --target=avx512skx-x16 --opt=disable-zmm test.ispc --emit-obj -o test.o