Merging r340158:
------------------------------------------------------------------------ r340158 | s.desmalen | 2018-08-20 11:16:59 +0200 (Mon, 20 Aug 2018) | 16 lines [AArch64][SVE] Asm: Add SVE System registers This patch adds system registers for controlling aspects of SVE: - ZCR_EL1 (r/w) visible at EL1 and EL0. - ZCR_EL2 (r/w) visible at EL2 and Non-secure EL1 and EL0. - ZCR_EL3 (r/w) visible at all exception levels. and a system register identifying SVE: - ID_AA64ZFR0_EL1 (r) SVE Feature identifier. Reviewers: SjoerdMeijer, samparker, pbarrio, fhahn, javed.absar Reviewed By: SjoerdMeijer Differential Revision: https://reviews.llvm.org/D50885 ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_70@340355 91177308-0d34-0410-b5e6-96231b3b80d8
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