[llvm] DAG: Remove unnecessary getPointerTy call (PR #154055)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-selectiondag

Author: Matt Arsenault (arsenm)

<details>
<summary>Changes</summary>

getValueType already did this

---
Full diff: https://github.com/llvm/llvm-project/pull/154055.diff


1 Files Affected:

- (modified) llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp (+2-5) 


``````````diff
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 2a1ef2b980ac4..98b4b40b739e0 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -1837,11 +1837,8 @@ SDValue SelectionDAGBuilder::getValueImpl(const Value *V) {
                          getValue(CPA->getDiscriminator()));
     }
 
-    if (isa<ConstantPointerNull>(C)) {
-      unsigned AS = V->getType()->getPointerAddressSpace();
-      return DAG.getConstant(0, getCurSDLoc(),
-                             TLI.getPointerTy(DAG.getDataLayout(), AS));
-    }
+    if (isa<ConstantPointerNull>(C))
+      return DAG.getConstant(0, getCurSDLoc(), VT);
 
     if (match(C, m_VScale()))
       return DAG.getVScale(getCurSDLoc(), VT, APInt(VT.getSizeInBits(), 1));

``````````

</details>


https://github.com/llvm/llvm-project/pull/154055