[Issue 12692] Add support for __simd in for 32-bits targets

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12692

--- Comment #3 from ponce <aliloko at gmail.com> ---
Using this program:

----

import core.simd;

void main()
{
    float4 a;
    a = __simd(XMM.SQRTSS, a);
}

----

$dmd test.d 
test.d(6): Error: undefined identifier __simd

$dmd test.d -m64
[compile as expected]

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