[AArch64] Update comments on the usage of X30 in FIXED_REGISTERS and CALL_USED_REGISTERS

Jiong Wang jiong.wang@arm.com
Fri Oct 16 14:44:00 GMT 2015


The patch https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02654.html
from last year changed the definition of LR in CALL_USED_REGISTERS,
but didn't update the comment above the #define to reflect the new usage.

This patch bring the comment inline with the implementation.

OK for trunk?

Thanks.

2015-10-16  Jiong. Wang  <jiong.wang@arm.com>

gcc/
   * config/aarch64/aarch64.h: Update the comments on usage of X30.

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