[llvm] [WebAssembly,llvm] Add llvm.wasm.ref.test.func intrinsic, option 2 (PR #147486)

[Hood Chatham via llvm-commits]

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@@ -402,7 +402,12 @@ void InstrEmitter::AddOperand(MachineInstrBuilder &MIB, SDValue Op,
     AddRegisterOperand(MIB, Op, IIOpNum, II, VRBaseMap,
                        IsDebug, IsClone, IsCloned);
   } else if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
-    MIB.addImm(C->getSExtValue());
+    if (C->getAPIntValue().getBitWidth() <= 64) {
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hoodmane wrote:

What's the difference? Does that count the most significant nonzero digit (non one for negative)? That seems like it could make it harder to ensure that a CImm is emitted except by adding extra padding 

https://github.com/llvm/llvm-project/pull/147486