[RISCV] Fix assert message operator

[mgrang]

Summary

Specifying assert message with an || operator makes the compiler interpret it
as a bool. Changed it to &&.

[asb]

Thanks, that's definitely an error. Please do feel totally free to commit straight-forward trivial fixes like this without the need for pre-commit review.

llvm/trunk/lib/Target/RISCV/RISCVISelLowering.cpp

static bool CC_RISCV(const DataLayout &DL, unsigned ValNo, MVT ValVT, MVT LocVT,
   SmallVectorImpl<ISD::ArgFlagsTy> &PendingArgFlags =
       State.getPendingArgFlags();
 
   assert(PendingLocs.size() == PendingArgFlags.size() &&
          "PendingLocs and PendingArgFlags out of sync");
 
   // Handle passing f64 on RV32D with a soft float ABI.
   if (XLen == 32 && ValVT == MVT::f64) {
-    assert(!ArgFlags.isSplit() && PendingLocs.empty() ||
+    assert(!ArgFlags.isSplit() && PendingLocs.empty() &&
            "Can't lower f64 if it is split");
     // Depending on available argument GPRS, f64 may be passed in a pair of
     // GPRs, split between a GPR and the stack, or passed completely on the
     // stack. LowerCall/LowerFormalArguments/LowerReturn must recognise these
     // cases.
     unsigned Reg = State.AllocateReg(ArgGPRs);
     LocVT = MVT::i32;
     if (!Reg) {