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| author | Alexey Volkov <avolkov.intel@gmail.com> | 2014-05-20 08:55:50 +0000 |
|---|---|---|
| committer | Alexey Volkov <avolkov.intel@gmail.com> | 2014-05-20 08:55:50 +0000 |
| commit | 6226de67210755a56d15dca7f1891fe7fddda3ca (patch) | |
| tree | 49e5679bb8c10b7fed4057f8b74aecbf2b818d01 /llvm/lib/Object/ELF.cpp | |
| parent | abdf44e7f38d392fed85692b2a31bf1578f3ee3b (diff) | |
| download | bcm5719-llvm-6226de67210755a56d15dca7f1891fe7fddda3ca.tar.gz bcm5719-llvm-6226de67210755a56d15dca7f1891fe7fddda3ca.zip | |
[X86] Tune LEA usage for Silvermont
According to Intel Software Optimization Manual on Silvermont in some cases LEA
is better to be replaced with ADD instructions:
"The rule of thumb for ADDs and LEAs is that it is justified to use LEA
with a valid index and/or displacement for non-destructive destination purposes
(especially useful for stack offset cases), or to use a SCALE.
Otherwise, ADD(s) are preferable."
Differential Revision: http://reviews.llvm.org/D3826
llvm-svn: 209198
Diffstat (limited to 'llvm/lib/Object/ELF.cpp')
0 files changed, 0 insertions, 0 deletions
