[llvm] [DirectX] Eliminate resource global variables from module (PR #114105)

[Cooper Partin via llvm-commits]

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@@ -204,6 +204,22 @@ class OpLowerer {
     CleanupCasts.clear();
   }
 
+  // Remove the resource global associated with the handleFromBinding call instruction
+  // and their uses as they aren't needed anymore.
+  void removeResourceGlobals(CallInst *CI) {
+    for (User *User : make_early_inc_range(CI->users())) {
+      if(StoreInst *Store = dyn_cast<StoreInst>(User)) {
+	if (GlobalVariable *GV = dyn_cast<GlobalVariable>(Store->getOperand(1))) {
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coopp wrote:

What is special about operand 1?  in `Store->getOperand(1)`?

https://github.com/llvm/llvm-project/pull/114105