[llvm] [AArch64][GlobalISel] Adopt some Ld1Lane* patterns for GlobalISel to reduce codegen regressions (PR #69607)

[Amara Emerson via llvm-commits]

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@@ -872,6 +872,8 @@ let RecomputePerFunction = 1 in {
 
   def SLSBLRMitigation : Predicate<[{ MF->getSubtarget<AArch64Subtarget>().hardenSlsBlr() }]>;
   def NoSLSBLRMitigation : Predicate<[{ !MF->getSubtarget<AArch64Subtarget>().hardenSlsBlr() }]>;
+
+  def OnlyGISel : Predicate<"MF->getProperties().hasProperty(MachineFunctionProperties::Property::FailedISel) || MF->getProperties().hasProperty(MachineFunctionProperties::Property::Legalized)">;
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aemerson wrote:

For GISel only shouldn't this be checking *not* FailedISel.

https://github.com/llvm/llvm-project/pull/69607