[llvm] [X86] Support hoisting load/store with conditional faulting (PR #95515)

[via llvm-commits]

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@@ -2960,6 +2967,197 @@ static bool validateAndCostRequiredSelects(BasicBlock *BB, BasicBlock *ThenBB,
   return HaveRewritablePHIs;
 }
 
+static bool isLoadFromAlloca(const Instruction &I) {
+  return isa<LoadInst>(I) && isa<AllocaInst>(I.getOperand(0));
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goldsteinn wrote:

I see now that this will also req checks that all intermediate operands dominate the br

https://github.com/llvm/llvm-project/pull/95515