diff options
| author | hev <wangrui@loongson.cn> | 2024-06-07 15:39:05 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-06-07 15:39:05 +0800 |
| commit | 240512c43234f58b3924cd90fe0781445d97e98d (patch) | |
| tree | 8ce402f40d1ed540f36ab911f694159ae07f8f14 /llvm/lib/CodeGen/TargetOptionsImpl.cpp | |
| parent | d224a034a20016272a3257f7081d02f90eb9cc78 (diff) | |
| download | llvm-240512c43234f58b3924cd90fe0781445d97e98d.zip llvm-240512c43234f58b3924cd90fe0781445d97e98d.tar.gz llvm-240512c43234f58b3924cd90fe0781445d97e98d.tar.bz2 | |
[LoongArch] Add a pass to rewrite rd to r0 for non-computational instrs whose return values are unused (#94590)
This patch adds a peephole pass `LoongArchDeadRegisterDefinitions`. It
rewrites `rd` to `r0` when `rd` is marked as dead. It may improve the
register allocation and reduce pipeline hazards on CPUs without register
renaming and OOO.
Diffstat (limited to 'llvm/lib/CodeGen/TargetOptionsImpl.cpp')
0 files changed, 0 insertions, 0 deletions