[llvm] [SLP]Initial support for copyable elements (non-schedulable only) (PR #140279)

[Alexey Bataev via llvm-commits]

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@@ -1220,6 +1235,48 @@ class InstructionsState {
   InstructionsState(Instruction *MainOp, Instruction *AltOp)
       : MainOp(MainOp), AltOp(AltOp) {}
   static InstructionsState invalid() { return {nullptr, nullptr}; }
+
+  bool isCopyableElement(Value *V) const {
+    assert(valid() && "InstructionsState is invalid.");
+    if (isAltShuffle() || getOpcode() == Instruction::GetElementPtr)
+      return false;
+    auto *I = dyn_cast<Instruction>(V);
+    if (!I && isa<PoisonValue>(V))
+      return false;
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alexey-bataev wrote:

Done

https://github.com/llvm/llvm-project/pull/140279