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| author | Ayke van Laethem <aykevanlaethem@gmail.com> | 2022-01-16 08:42:48 +0100 |
|---|---|---|
| committer | Ayke van Laethem <aykevanlaethem@gmail.com> | 2022-01-23 17:08:01 +0100 |
| commit | 116ab78694dd2ad903c3fb101d48e01855282bf8 (patch) | |
| tree | 1b0172272f53078d1652bf778a817461d55cb823 /lldb/source/Commands/CommandObjectThread.cpp | |
| parent | 153359180a9d5a6cea3985db5d3396218dc6252d (diff) | |
| download | llvm-116ab78694dd2ad903c3fb101d48e01855282bf8.zip llvm-116ab78694dd2ad903c3fb101d48e01855282bf8.tar.gz llvm-116ab78694dd2ad903c3fb101d48e01855282bf8.tar.bz2 | |
[AVR] Make use of the constant value 0 in R1
The register R1 is defined to have the constant value 0 in the avr-gcc
calling convention (which we follow). Unfortunately, we don't really
make use of it. This patch replaces `LDI 0` instructions with a copy
from R1.
This reduces code size: my AVR build of compiler-rt goes from 50660 to
50240 bytes of code size, which is a 0.8% reduction. Presumably it will
also improve execution speed, although I didn't measure this.
Differential Revision: https://reviews.llvm.org/D117425
Diffstat (limited to 'lldb/source/Commands/CommandObjectThread.cpp')
0 files changed, 0 insertions, 0 deletions