[Issue 21474] New: ICE with core.simd and -O ("Illegal Instruction")

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21474

          Issue ID: 21474
           Summary: ICE with core.simd and -O ("Illegal Instruction")
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: aliloko at gmail.com

-------- test3.d --------

import core.simd;

struct long1
{
    long[1] arr;
}

int4 to_m128i(long1 a)
{
    long2 r;
    r[0] = a.arr[0];
    return cast(int4)r;
}

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

Build with: dmd -O -m64 test3.d


DMD 2.094.2 returns -1073741795
DMD 2.088.0 has a bit more info and says: object.Error@(0): Illegal Instruction


The bug disappear with -O left out.

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