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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/95973] New: Add __cpuidex
Date: Mon, 29 Jun 2020 16:31:48 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95973

            Bug ID: 95973
           Summary: Add __cpuidex
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: crazylht at gmail dot com, wwwhhhyyy333 at gmail dot com
  Target Milestone: ---
            Target: i386, x86-64

GCC has

__cpuid_count(leaf,subleaf, a,b,c,d)

MSVS has

void __cpuidex(
   int cpuInfo[4],
   int function_id,
   int subfunction_id
);

MSVS's interface is a little more sensible, passing &  returning an array vs
modifying 4 arguments in an un-C-language-like way.  We should add __cpuide=
x.=