[all-commits] [llvm/llvm-project] 11051d: [RISCV] Constrain register class before replaceReg...
Craig Topper via All-commits
all-commits at lists.llvm.org
Tue Jul 11 09:54:16 PDT 2023
Branch: refs/heads/main
Home: https://github.com/llvm/llvm-project
Commit: 11051d7d864bc4afdb9ec85b20825fcbf5a40022
https://github.com/llvm/llvm-project/commit/11051d7d864bc4afdb9ec85b20825fcbf5a40022
Author: Craig Topper <craig.topper at sifive.com>
Date: 2023-07-11 (Tue, 11 Jul 2023)
Changed paths:
M llvm/lib/Target/RISCV/RISCVMergeBaseOffset.cpp
Log Message:
-----------
[RISCV] Constrain register class before replaceRegWith in RISCVMergeBaseOffset.
The register being replaced might have a more restrictive register
class due to requirements of the using instruction. We should
constrain the register class to preserve any restrictions.
This was found in our downstream on a custom instruction. I don't
have a test case for upstream currently.
Differential Revision: https://reviews.llvm.org/D154920
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