Commit Graph

3 Commits

Author SHA1 Message Date
Bradley Smith 4c21cba72b [ARM] Split out ARMv8-A semaphores and atomics and ARMv7 clrex as separate features
llvm-svn: 257877
2016-01-15 10:23:46 +00:00
Roman Divacky 73fc84761f Support clrex instruction on ARMv6k. Patch by Andrew Turner.
llvm-svn: 256505
2015-12-28 17:47:23 +00:00
Renato Golin 1235060734 [ARM] Add support for ARMV6K subtarget (LLVM)
ARMv6K is another layer between ARMV6 and ARMV6T2. This is the LLVM
side of the changes.

ARMV6 family LLVM implementation.

+-------------------------------------+
| ARMV6                               |
+----------------+--------------------+
| ARMV6M (thumb) | ARMV6K (arm,thumb) | <- From ARMV6K and ARMV6M processors
+----------------+--------------------+    have support for hint instructions
| ARMV6T2 (arm,thumb,thumb2)          |    (SEV/WFE/WFI/NOP/YIELD). They can
+-------------------------------------+    be either real or default to NOP.
| ARMV7 (arm,thumb,thumb2)            |    The two processors also use
+-------------------------------------+    different encoding for them.

Patch by Vinicius Tinti.

llvm-svn: 232468
2015-03-17 11:55:28 +00:00