[llvm] [AArch64][GlobalISel] Lower G_BUILD_VECTOR to G_INSERT_VECTOR_ELT (PR #105686)

[Dhruv Chawla via llvm-commits]

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@@ -61,15 +61,41 @@ bool GIMatchTableExecutor::isBaseWithConstantOffset(
 
 bool GIMatchTableExecutor::isObviouslySafeToFold(MachineInstr &MI,
                                                  MachineInstr &IntoMI) const {
+  auto IntoMIIter = IntoMI.getIterator();
+
   // Immediate neighbours are already folded.
   if (MI.getParent() == IntoMI.getParent() &&
-      std::next(MI.getIterator()) == IntoMI.getIterator())
+      std::next(MI.getIterator()) == IntoMIIter)
     return true;
 
   // Convergent instructions cannot be moved in the CFG.
   if (MI.isConvergent() && MI.getParent() != IntoMI.getParent())
     return false;
 
-  return !MI.mayLoadOrStore() && !MI.mayRaiseFPException() &&
-         !MI.hasUnmodeledSideEffects() && MI.implicit_operands().empty();
+  if (MI.isLoadFoldBarrier())
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dc03-work wrote:

Looks like https://github.com/llvm/llvm-project/pull/105689 accidentally got included here.

https://github.com/llvm/llvm-project/pull/105686