[PATCH] Allow case-insensitive values for -march for ARM in line with GCC.

[Gabor Ballabas]

Hi Renato,

> Does this fix the problems we were seeing in the ARM side? Was that because we're using StringRef's instead of std::string?


The problems in the ARM side were in the first version of the -mcpu patch, on the AArch64 code path.
This patch is the -march implementation without the AArch64 code path.
I'm still working on the AArch64 side of -mcpu and -march, trying to find a proper solution.

Thanks,
Gabor


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http://reviews.llvm.org/D10315

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