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* Revert "[ARM] Allocatable Global Register Variables for ARM"Carey Williams2019-11-291-44/+0
| | | | This reverts commit 2d739f98d8a53e38bf9faa88cdb6b0c2a363fb77.
* [ARM] Allocatable Global Register Variables for ARMAnna Welker2019-11-181-0/+44
Provides support for using r6-r11 as globally scoped register variables. This requires a -ffixed-rN flag in order to reserve rN against general allocation. If for a given GRV declaration the corresponding flag is not found, or the the register in question is the target's FP, we fail with a diagnostic. Differential Revision: https://reviews.llvm.org/D68862
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