[llvm] [DirectX] add GEP i8 legalization (PR #142475)

[Farzon Lotfi via llvm-commits]

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@@ -175,25 +207,35 @@ static void upcastI8AllocasAndUses(Instruction &I,
 
   Type *SmallestType = nullptr;
 
-  for (User *U : AI->users()) {
-    auto *Load = dyn_cast<LoadInst>(U);
-    if (!Load)
-      continue;
+  auto ProcessLoad = [&](LoadInst *Load) {
     for (User *LU : Load->users()) {
       Type *Ty = nullptr;
-      if (auto *Cast = dyn_cast<CastInst>(LU))
+      if (auto *Cast = dyn_cast<CastInst>(LU)) {
         Ty = Cast->getType();
-      if (CallInst *CI = dyn_cast<CallInst>(LU)) {
+      } else if (auto *CI = dyn_cast<CallInst>(LU)) {
         if (CI->getIntrinsicID() == Intrinsic::memset)
           Ty = Type::getInt32Ty(CI->getContext());
       }
 
       if (!Ty)
         continue;
 
-      if (!SmallestType ||
-          Ty->getPrimitiveSizeInBits() < SmallestType->getPrimitiveSizeInBits())
+      if (!SmallestType || Ty->getPrimitiveSizeInBits() <
+                               SmallestType->getPrimitiveSizeInBits()) {
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farzonl wrote:

Yes thank you! Vscode  did some auto complete funny buisness when was trying to move this into a lambda.

https://github.com/llvm/llvm-project/pull/142475