[llvm] [RISCV] Fold vfmv.f.s into load from stack (PR #110129)

[Craig Topper via llvm-commits]

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@@ -784,6 +784,26 @@ MachineInstr *RISCVInstrInfo::foldMemoryOperandImpl(
       }
       break;
     }
+    if (RISCV::getRVVMCOpcode(MI.getOpcode()) == RISCV::VFMV_F_S) {
+      unsigned Log2SEW =
+          MI.getOperand(RISCVII::getSEWOpNum(MI.getDesc())).getImm();
+      if (STI.getXLen() < (1 << Log2SEW))
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topperc wrote:

Is this XLen checked needed?

https://github.com/llvm/llvm-project/pull/110129