[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

briancschott at gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code, industry
                 CC|                            |briancschott at gmail.com
                 OS|Windows                     |All

--- Comment #2 from briancschott at gmail.com ---
Here's a test case minimized from a failed build of some data processing code
at EMSI. This is partially a 2.078.0 regression, but I wasn't sure about filing
a new issue since it seems to be a duplicate of this bug.

-----------------------------

void main()
{
}

struct Line
{
    double slope;
    double intercept;
}

Line nLineProjection(double[] historicData)
{
    Line projLine;
    projLine.intercept = historicData[$-1] + projLine.slope;
    return projLine;
}

-----------------------------

$ dmd -O test.d
tym = x1d
Internal error: dmd/backend/cgxmm.c 684
$ dmd --version
DMD64 D Compiler v2.078.0
Copyright (c) 1999-2017 by The D Language Foundation written by Walter Bright

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