[PATCH, Darwin, testsuite, committed] Fix PR81058.

[Iain Sandoe]

The tests fail as noted in the PR, because Darwin’s ABI mandates indirection 
for common accesses, which means that the codegen doesn’t match what the tests 
expect.

In this case, we can fix this simply by placing the relevant vars in the 
regular data section (by appending -fno-common to the test flags).

Applied to trunk, will backport in due course.

thanks.
Iain

gcc/testsuite/

2019-05-11  Iain Sandoe  <i...@sandoe.co.uk>

        PR testsuite/81058
        * gcc.target/i386/avx512bw-vpmovswb-1.c: Use regular data section
        for variables on Darwin, rather than common.
        * gcc.target/i386/avx512bw-vpmovuswb-1.c: Likewise.
        * gcc.target/i386/avx512bw-vpmovwb-1.c: Likewise.

pr81058-trunk.diff
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