[llvm] [AArch64][GlobalISel] Legalize Insert vector element (PR #81453)

[Matt Arsenault via llvm-commits]

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@@ -2972,7 +2972,22 @@ bool IRTranslator::translateInsertElement(const User &U,
   Register Res = getOrCreateVReg(U);
   Register Val = getOrCreateVReg(*U.getOperand(0));
   Register Elt = getOrCreateVReg(*U.getOperand(1));
-  Register Idx = getOrCreateVReg(*U.getOperand(2));
+  const auto &TLI = *MF->getSubtarget().getTargetLowering();
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arsenm wrote:

the TargetLowering should probably be an IRTranslator member if it isn't already 

https://github.com/llvm/llvm-project/pull/81453