[PATCH] D14773: [ARM] Support +feature targeting in -mcpu/-march

[Bradley Smith via cfe-commits]

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For AArch64 it is possible to specify various optional extensions by using options such as '-mcpu=cortex-a53+crc', we would like to add the same support to the ARM targeting to allow specifying of extensions in this manner. We use TargetParser to do this rather than a StringSwitch to avoid hard-coding extension names.

Repository:
  rL LLVM

http://reviews.llvm.org/D14773

Files:
  lib/Driver/Tools.cpp
  test/Driver/arm-features.c

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