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| author | Daniel Cederman <cederman@gaisler.com> | 2018-08-30 14:05:26 +0000 |
|---|---|---|
| committer | Daniel Cederman <cederman@gaisler.com> | 2018-08-30 14:05:26 +0000 |
| commit | 8f0bf6c19af03da36dbcca969f3500fdd4619df9 (patch) | |
| tree | 3f23fab24bc836649ce7a76ecf81710733f0ec8a /lldb/packages/Python/lldbsuite/test/functionalities/command_script/main.cpp | |
| parent | 201f892b3b597f24287ab6a712a286e25a45a7d9 (diff) | |
| download | bcm5719-llvm-8f0bf6c19af03da36dbcca969f3500fdd4619df9.tar.gz bcm5719-llvm-8f0bf6c19af03da36dbcca969f3500fdd4619df9.zip | |
[Sparc] Use ANDN instead of AND if constant can be encoded more efficiently
Summary:
In the case of (and reg, constant) or (or reg, constant), it can be
beneficial to use a ANDNrr/ORNrr instruction instead of ANDrr/ORrr,
if the complement of the constant can be encoded using a single SETHI
instruction instead of a SETHI/ORri pair.
If the constant has more than one use, it is probably better to keep it
in its original form.
Reviewers: jyknight, venkatra
Reviewed By: jyknight
Subscribers: fedor.sergeev, jrtc27, llvm-commits
Differential Revision: https://reviews.llvm.org/D50964
llvm-svn: 341069
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/functionalities/command_script/main.cpp')
0 files changed, 0 insertions, 0 deletions
