[RISCV][VLOPT] Get MachineInstr from MachineOperand in getOperandInfo. NFC

[lukel97]

IICU MI should be MO's parent, so just use MachineOperand::getParent().

[llvmbot]

@llvm/pr-subscribers-backend-risc-v

Author: Luke Lau (lukel97)

Changes

IICU MI should be MO's parent, so just use MachineOperand::getParent().

---

Full diff: https://github.com/llvm/llvm-project/pull/119838.diff

1 Files Affected:

• (modified) llvm/lib/Target/RISCV/RISCVVLOptimizer.cpp (+4-4)

diff --git a/llvm/lib/Target/RISCV/RISCVVLOptimizer.cpp b/llvm/lib/Target/RISCV/RISCVVLOptimizer.cpp
index dabf36480f1dcf..1e1be6818b5340 100644
--- a/llvm/lib/Target/RISCV/RISCVVLOptimizer.cpp
+++ b/llvm/lib/Target/RISCV/RISCVVLOptimizer.cpp
@@ -206,9 +206,9 @@ static bool isMaskOperand(const MachineInstr &MI, const MachineOperand &MO,
 }
 
 /// Return the OperandInfo for MO, which is an operand of MI.
-static OperandInfo getOperandInfo(const MachineInstr &MI,
-                                  const MachineOperand &MO,
+static OperandInfo getOperandInfo(const MachineOperand &MO,
                                   const MachineRegisterInfo *MRI) {
+  const MachineInstr &MI = *MO.getParent();
   const RISCVVPseudosTable::PseudoInfo *RVV =
       RISCVVPseudosTable::getPseudoInfo(MI.getOpcode());
   assert(RVV && "Could not find MI in PseudoTable");
@@ -804,8 +804,8 @@ bool RISCVVLOptimizer::checkUsers(const MachineOperand *&CommonVL,
     assert(isVectorRegClass(UserMI.getOperand(0).getReg(), MRI) &&
            "Expected DEF and USE to be vector registers");
 
-    OperandInfo ConsumerInfo = getOperandInfo(UserMI, UserOp, MRI);
-    OperandInfo ProducerInfo = getOperandInfo(MI, MI.getOperand(0), MRI);
+    OperandInfo ConsumerInfo = getOperandInfo(UserOp, MRI);
+    OperandInfo ProducerInfo = getOperandInfo(MI.getOperand(0), MRI);
     if (ConsumerInfo.isUnknown() || ProducerInfo.isUnknown() ||
         !OperandInfo::EMULAndEEWAreEqual(ConsumerInfo, ProducerInfo)) {
       LLVM_DEBUG(dbgs() << "    Abort due to incompatible or unknown "

[michaelmaitland]

LGTM, thanks!

[michaelmaitland]

nit: drop which is an operand of MI?