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Author SHA1 Message Date
James Molloy 650cb57067 [ARM64] Add a big endian version of the ARM64 target machine, and update all users. 
This completes the porting of r202024 (cpirker "Add AArch64 big endian Target (aarch64_be)") to ARM64.

llvm-svn: 206965
 2014-04-23 10:26:40 +00:00
Tim Northover 37d9a9cebf ARM64: disable generation of .loh directives outside MachO. 
Part of PR19455.

llvm-svn: 206611
 2014-04-18 14:54:46 +00:00
Tim Northover 0129f298c4 ARM64: add acquire/release versions of the existing atomic intrinsics. 
These will be needed to support IR-level lowering of atomic
operations.

llvm-svn: 206489
 2014-04-17 20:00:24 +00:00
Louis Gerbarg 6d2e3c638f Add a flag to disable the ARM64DeadRegisterDefinitionsPass 
This patch adds a -arm64-dead-def-elimination flag so that it is possible to
disable dead definition elimination. Includes test case.

llvm-svn: 206207
 2014-04-14 21:05:02 +00:00
Tim Northover 00ed9964c6 ARM64: initial backend import 
This adds a second implementation of the AArch64 architecture to LLVM,
accessible in parallel via the "arm64" triple. The plan over the
coming weeks & months is to merge the two into a single backend,
during which time thorough code review should naturally occur.

Everything will be easier with the target in-tree though, hence this
commit.

llvm-svn: 205090
 2014-03-29 10:18:08 +00:00