DMD test suite assertion failure in test_cdvecfill.d

[Michael V. Franklin]

I'm getting this error when I try to run the DMD test suite.

cd dmd
make -C test -f Makefile

  ... runnable/test_cdvecfill.d      -O (-mcpu=avx -mcpu=avx2)
Test failed.  The logged output:
../src/dmd -conf= -m64 -Irunnable -O  -odtest_results/runnable 
-oftest_results/runnable/test_cdvecfill_0 
runnable/test_cdvecfill.d
test_results/runnable/test_cdvecfill_0
Expected code sequence for load!(ubyte, 16) not found.
   Expected: 0x50 0x66 0x0f 0x6e 0xc7 0x66 0x0f 0x60 0xc0 0x66 
0x0f 0x61 0xc0 0x66 0x0f 0x70 0xc0 0x00 0x59 0xc3
   Actual: 0x55 0x48 0x8b 0xec 0x66 0x0f 0x6e 0xc7 0x66 0x0f 0x60 
0xc0 0x66 0x0f 0x61 0xc0 0x66 0x0f 0x70 0xc0 0x00 0x5d 0xc3 0x00 
0x55 0x48 0x8b 0xec 0x0f 0xb6 0x07 0x66 0x0f 0x6e 0xc0 0x66 0x0f 
0x60 0xc0 0x66 0x0f 0x61 0xc0 0x66 0x0f 0x70 0xc0 0x00 0x5d 0xc3 
0x00 0x00 0x55 0x48 0x8b 0xec 0x66 0x0f 0x6e 0xc7 0x66 0x0f 0x60 
0xc0
core.exception.AssertError at runnable/test_cdvecfill.d(895): 
Assertion failure
----------------
??:? _d_assertp [0xd9faa4f1]
??:? [0x84bcd81c]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).runAll().__lambda1() [0xd9fc7d5f]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).tryExec(scope void delegate()) [0xd9fc7c8f]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).runAll() [0xd9fc7d08]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int 
function(char[][])*).tryExec(scope void delegate()) [0xd9fc7c8f]
??:? _d_run_main [0xd9fc7bfa]
??:? [0x84bd1057]
??:? __libc_start_main [0xd8eaaf69]

Any idea what I'm doing wrong?

I'm running 64-bit Arch Linux.

Thanks,
Mike