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| author | Craig Topper <craig.topper@sifive.com> | 2022-05-11 12:49:01 -0700 |
|---|---|---|
| committer | Craig Topper <craig.topper@sifive.com> | 2022-05-11 12:49:03 -0700 |
| commit | ed242b54c9c2aa84a47f66af5b8497d93646b68d (patch) | |
| tree | 058487b91d8b1925ccac79130d521f6f5e1f000c /clang/lib/Frontend/CompilerInvocation.cpp | |
| parent | 5c7ec998a916baf8b35d571d0cc11753d464792d (diff) | |
| download | llvm-ed242b54c9c2aa84a47f66af5b8497d93646b68d.zip llvm-ed242b54c9c2aa84a47f66af5b8497d93646b68d.tar.gz llvm-ed242b54c9c2aa84a47f66af5b8497d93646b68d.tar.bz2 | |
[RISCV] Enable subregister liveness tracking for RVV.
RVV makes heavy use of subregisters due to LMUL>1 and segment
load/store tuples. Enabling subregister liveness tracking improves the quality
of the register allocation.
I've added a command line that can be used to turn it off if it causes compile
time or functional issues. I used the command line to keep the old behavior
for one interesting test case that was testing register allocation.
Reviewed By: frasercrmck
Differential Revision: https://reviews.llvm.org/D125108
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
0 files changed, 0 insertions, 0 deletions