Avoid Intel specific flags with icc

[bernhardmgruber]

No description provided.

[amadio]

Can you please rebase this and replace all "/SSE2" with ""?

[bernhardmgruber]

Do you mean the /arch:SSE2 flags? Those are for MSVC. What is the problem with them?

[amadio]

Yes, that's what I mean. They are not necessary (enabled by default on x86), or not available (only AVX and above for x64).

[bernhardmgruber]

Oh, I did not know it was the default on 32bit VS as well. Will do!

[amadio]

I think it's only uploading to CDash that is failing. Maybe we should just disable that temporarily to get the actual results in CI?

[bernhardmgruber]

I think I found the issue. icpc does nether recognize the flags -mavx2 nor -mbmi2. You have to pass -march=core-avx2 to enable AVX2. It's described here: https://www.intel.com/content/www/us/en/develop/documentation/cpp-compiler-developer-guide-and-reference/top/compiler-reference/compiler-options/compiler-option-details/code-generation-options/m.html

[bernhardmgruber]

icpc: error #10106: Fatal error in /opt/intel/oneapi/compiler/2022.0.2/linux/bin/intel64/../../bin/intel64/mcpcom, terminated by kill signal
compilation aborted for /home/runner/work/Vc/Vc/tests/utils.cpp (code 1)

But all other tests for Intel are passing.