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| author | Tim Northover <tnorthover@apple.com> | 2015-07-29 21:34:32 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2015-07-29 21:34:32 +0000 |
| commit | 2a9d801fd58d2b6407662d76e95fcd21957282a6 (patch) | |
| tree | 80326e3ed6fb3e793fe263bfd282498fd4fa5491 /lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp | |
| parent | a6f9a37d92bbecaec799e02f84d6bf2cb866e91b (diff) | |
AArch64: use 32-bit MOV rather than UBFX to truncate registers.
It's potentially more efficient on Cyclone, and from the optimization guides &
schedulers looks like it has no effect on Cortex-A53 or A57. In general you'd
expect a MOV to be about the most efficient instruction with its semantics,
even though the official "UXTW" alias is really a UBFX.
llvm-svn: 243576
Diffstat (limited to 'lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp')
0 files changed, 0 insertions, 0 deletions