[llvm] Decompose gep of complex type struct to its element type (PR #107848)

[Matt Arsenault via llvm-commits]

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@@ -1555,6 +1555,17 @@ bool GetElementPtrInst::hasAllConstantIndices() const {
   return true;
 }
 
+/// hasAllZeroIndicesExceptLast - Return true if all of the indices of this GEP
+/// are zero except the last indice.
+bool GetElementPtrInst::hasAllZeroIndicesExceptLast() const {
+  for (unsigned i = 1, e = getNumOperands() - 1; i != e; ++i) {
+    ConstantInt *Val = dyn_cast<ConstantInt>(getOperand(i));
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arsenm wrote:

Your vector test is not a vector test. This code will not work for a vector of pointers typed getelementptr 

https://github.com/llvm/llvm-project/pull/107848