[PATCH] [ARM] Produce an error message if -arm-no-strict-align is specified with the v6M arch.

[Charlie Turner]

Hi,

 

The command,

 

llc empty.ll -mtriple=thumb-none-linux-gnueabi -arm-no-strict-align
-mcpu=cortex-m0

 

should produce an error message explaining that the cortex-m0 (a v6M CPU)
does not support unaligned data accesses. The attached patch implements this
behavior.

 

Please find the patch attached.

 

Kind regards,

Charlie.
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