[llvm] [SelectionDAG] Remove lowerCallToExternalSymbol (PR #127408)

[Kazu Hirata via llvm-commits]

https://github.com/kazutakahirata created https://github.com/llvm/llvm-project/pull/127408

The last use was removed in:

  commit 05e6bb40ebfd285cc87f7ce326b7ba76c3c7f870
  Author: Roger Ferrer Ibáñez <rofirrim at gmail.com>
  Date:   Thu May 30 14:55:32 2024 +0200


>From 261b33f47cddd54ee41b30019c4d2101dc523e7a Mon Sep 17 00:00:00 2001
From: Kazu Hirata <kazu at google.com>
Date: Sun, 16 Feb 2025 11:19:01 -0800
Subject: [PATCH] [SelectionDAG] Remove lowerCallToExternalSymbol
MIME-Version: 1.0
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The last use was removed in:

  commit 05e6bb40ebfd285cc87f7ce326b7ba76c3c7f870
  Author: Roger Ferrer Ibáñez <rofirrim at gmail.com>
  Date:   Thu May 30 14:55:32 2024 +0200
---
 llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 9 ---------
 llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h   | 3 ---
 2 files changed, 12 deletions(-)

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index cac25fd7c1025..78a6e24e5b8d2 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -6281,15 +6281,6 @@ static unsigned FixedPointIntrinsicToOpcode(unsigned Intrinsic) {
   }
 }
 
-void SelectionDAGBuilder::lowerCallToExternalSymbol(const CallInst &I,
-                                           const char *FunctionName) {
-  assert(FunctionName && "FunctionName must not be nullptr");
-  SDValue Callee = DAG.getExternalSymbol(
-      FunctionName,
-      DAG.getTargetLoweringInfo().getPointerTy(DAG.getDataLayout()));
-  LowerCallTo(I, Callee, I.isTailCall(), I.isMustTailCall());
-}
-
 /// Given a @llvm.call.preallocated.setup, return the corresponding
 /// preallocated call.
 static const CallBase *FindPreallocatedCall(const Value *PreallocatedSetup) {
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
index ece48c9bedf72..8496f8ae78ce6 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
@@ -705,9 +705,6 @@ class SelectionDAGBuilder {
                           DIExpression *Expr, const DebugLoc &dl,
                           unsigned DbgSDNodeOrder);
 
-  /// Lowers CallInst to an external symbol.
-  void lowerCallToExternalSymbol(const CallInst &I, const char *FunctionName);
-
   SDValue lowerStartEH(SDValue Chain, const BasicBlock *EHPadBB,
                        MCSymbol *&BeginLabel);
   SDValue lowerEndEH(SDValue Chain, const InvokeInst *II,