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

[Matt Arsenault via llvm-commits]

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

getValueType already did this

>From 1cb40362edb81672a8089adb9637abc125386c6d Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault at amd.com>
Date: Mon, 18 Aug 2025 12:48:29 +0900
Subject: [PATCH] DAG: Remove unnecessary getPointerTy call

getValueType already did this
---
 llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

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));