[GCCBootstrap] Patch avx512fintrin

[omus]

Closes #2389. This is my first time patching the root bundle so let be know if I missed anything. I believe I named the patch appropriately using the first GCC version affected.

Here's the original patch: gcc-mirror/gcc@23bce99#diff-c3bbd1dcd7c953ef6d719969fb187e31209ef3d7851a84448aad949aea2e8106. I'll note I'm currently only patching the header file (as was mentioned here: #2385 (comment)) but we may want to apply the entire patch.

Edit: I see now that the other code change only applies to the tests so just patching the header should be fine.

[omus]

Note this patch doesn't apply to GCC 6 as _mm512_abs_pd and _mm512_mask_abs_pd are not defined

[omus]

I've also confirmed the that patch is not needed on GCC 9.1.0

[omus]

With this patch it should be safe to remove the dasum_microk_skylakex-typecast.patch patches from OpenBLAS*@0.3.12

[giordano]

Note this patch doesn't apply to GCC 6 as _mm512_abs_pd and _mm512_mask_abs_pd are not defined

Yeah, they were introduced in gcc-mirror/gcc@dcb2c52, which, according to the tags, appeared first in a release in 7.1.0. Good that only two versions are affected then! I'll try to rebuild the x86_64 shards in the next few days

[giordano]

I started building GCC 7 a few minutes ago, hopefully in less than 24 hours I'll finish to build all needed shards.... ⏳

[omus]

Bump

[giordano]

Relevant GCC shards updated in JuliaPackaging/BinaryBuilderBase.jl#101. Thanks!