Fangrui Song 0792ef7256 [Driver] Verify -mrecord-mcount in Driver, instead of CodeGen after D71627 ...

GCC's x86 and s390 ports support -mrecord-mcount. Other ports reject the
option.

  aarch64-linux-gnu-gcc: error: unrecognized command line option ‘-mrecord-mcount’

Allowing this option can cause failures when building Linux kernel for
aarch64, powerpc64, etc, which will think the feature is available if
the clang command returns 0.

2019-12-21 22:47:24 -08:00

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