[PATCH] D143103: [RISCV] Add CoveredBySubRegs to the X*_PD register class.

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: asb, luismarques, jrtc27, reames.
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Not completely sure what effect this has, but it's certainly true.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D143103

Files:
  llvm/lib/Target/RISCV/RISCVRegisterInfo.td


Index: llvm/lib/Target/RISCV/RISCVRegisterInfo.td
===================================================================
--- llvm/lib/Target/RISCV/RISCVRegisterInfo.td
+++ llvm/lib/Target/RISCV/RISCVRegisterInfo.td
@@ -551,6 +551,7 @@
                                            !cast<Register>("X"#!add(Index, 1))],
                                            Reg.AltNames> {
       let SubRegIndices = [sub_32, sub_32_hi];
+      let CoveredBySubRegs = 1;
     }
   }
 }


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