[MacPorts] #67802: qt6-qtbase @6.4.3_1: Fail to compile on 10.14 _mm256_maskz_cvtps_ph() called with wrong number of args

[MacPorts]

#67802: qt6-qtbase @6.4.3_1: Fail to compile on 10.14 _mm256_maskz_cvtps_ph()
called with wrong number of args
--------------------------+---------------------------------
  Reporter:  macportsraf  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.8.1
Resolution:               |   Keywords:
      Port:  qt6-qtbase   |
--------------------------+---------------------------------

Comment (by chrstphrchvz):

 Clang since 3.9.0 ([https://github.com/llvm/llvm-
 project/commit/9e7d0a98fa26]) but before 9.0.0 ([https://github.com/llvm
 /llvm-project/commit/6d9fb68c536d], and so likely also Xcode Clang before
 11.4) had defined `_mm256_maskz_cvtps_ph` as 2-argument (and apparently so
 had Intel for a time, but not anymore). It should be okay to use the
 equivalent `_mm256_maskz_cvt_roundps_ph` intrinsic which Clang has always
 defined as 3-argument: [https://github.com/macports/macports-
 ports/pull/19627]

 However [https://github.com/macports/macports-ports/pull/19407] already
 proposed disabling this and other code which does not build on 10.14.

-- 
Ticket URL: <https://trac.macports.org/ticket/67802#comment:2>
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