[llvm] [X86] Lowering of load atomic float via cast (PR #117189)

[Matt Arsenault via llvm-commits]

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@@ -31158,6 +31158,14 @@ bool X86TargetLowering::needsCmpXchgNb(Type *MemType) const {
   return false;
 }
 
+TargetLoweringBase::AtomicExpansionKind
+X86TargetLowering::shouldCastAtomicLoadInIR(LoadInst *LI) const {
+  if (const auto VT = dyn_cast<VectorType>(LI->getType()))
+    if (VT->getElementType()->isFloatingPointTy())
+      return AtomicExpansionKind::CastToInteger;
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arsenm wrote:

Title is also wrong, the point is to handle vectors?

https://github.com/llvm/llvm-project/pull/117189