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| author | Ayke van Laethem <aykevanlaethem@gmail.com> | 2022-01-19 23:30:54 +0100 |
|---|---|---|
| committer | Ayke van Laethem <aykevanlaethem@gmail.com> | 2022-02-02 09:10:39 +0100 |
| commit | 316664783df8061b39febeef4c800c85f735eef1 (patch) | |
| tree | a25ca2186072659b02bf22c227a096bbadf007ec /lldb/source/Plugins/ScriptInterpreter/Python/PythonReadline.h | |
| parent | a2601c98873376bbbeff4b6eddf0f4d920535f8b (diff) | |
| download | llvm-316664783df8061b39febeef4c800c85f735eef1.zip llvm-316664783df8061b39febeef4c800c85f735eef1.tar.gz llvm-316664783df8061b39febeef4c800c85f735eef1.tar.bz2 | |
[AVR] Fix atomicrmw result value
This patch fixes the atomicrmw result value to be the value before the
operation instead of the value after the operation. This was a bug, left
as a FIXME in the code (see https://reviews.llvm.org/D97127).
From the LangRef:
> The contents of memory at the location specified by the <pointer>
> operand are atomically read, modified, and written back. The original
> value at the location is returned.
Doing this expansion early allows the register allocator to arrange
registers in such a way that commutable operations are simply swapped
around as needed, which results in shorter code while still being
correct.
Differential Revision: https://reviews.llvm.org/D117725
Diffstat (limited to 'lldb/source/Plugins/ScriptInterpreter/Python/PythonReadline.h')
0 files changed, 0 insertions, 0 deletions