[Issue 15206] ICE on optimized build, tym = x1d Internal error: backend\cgxmm.c 547

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=15206

John Colvin <john.loughran.colvin at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |john.loughran.colvin at gmail.
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--- Comment #7 from John Colvin <john.loughran.colvin at gmail.com> ---
I found a different piece of code that triggers the same error:

% cat test.d:
alias A = Complex!double;

struct Complex(T)
{
    double re, im;

    Complex!double baz()
    {
        return Complex!double(re).blah;
    }

    ref Complex!double blah()
    {
        im = re;
        return this;
    }
}

% dmd -c -inline -O -m64 test.d
tym = x1d
Internal error: dmd/backend/cgxmm.c 684

Walter, I can produce the error for both this and the original example on both
macOS and linux (haven't tried windows). -m32 avoids the bug.

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