[clang] [clang][dataflow] Remove unused function: transferBlock() (PR #65932)

[Kinuko Yasuda via cfe-commits]

https://github.com/kinu created https://github.com/llvm/llvm-project/pull/65932:

No one seems to be using transferBlock() in TypeErasedDataflowAnalysis, it is likely a remnant of old code


>From dc808e4edccdd8d405660729713dd169c87daf71 Mon Sep 17 00:00:00 2001
From: Kinuko Yasuda <kinuko at chromium.org>
Date: Fri, 8 Sep 2023 21:47:25 +0000
Subject: [PATCH] [clang][dataflow] Remove unused function: transferBlock()

No one seems to be using transferBlock() in TypeErasedDataflowAnalysis, it is
likely a remnant of old code
---
 .../TypeErasedDataflowAnalysis.h              | 19 -------------------
 .../TypeErasedDataflowAnalysis.cpp            | 12 ------------
 2 files changed, 31 deletions(-)

diff --git a/clang/include/clang/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.h b/clang/include/clang/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.h
index 88a33d19f7d8f61..67c323dbf45e1b2 100644
--- a/clang/include/clang/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.h
+++ b/clang/include/clang/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.h
@@ -132,25 +132,6 @@ struct TypeErasedDataflowAnalysisState {
   }
 };
 
-/// Transfers the state of a basic block by evaluating each of its elements in
-/// the context of `Analysis` and the states of its predecessors that are
-/// available in `BlockStates`. `PostVisitCFG` (if provided) will be applied to
-/// each element in the block, after it is evaluated.
-///
-/// Requirements:
-///
-///   All predecessors of `Block` except those with loop back edges must have
-///   already been transferred. States in `BlockStates` that are set to
-///   `std::nullopt` represent basic blocks that are not evaluated yet.
-TypeErasedDataflowAnalysisState transferBlock(
-    const ControlFlowContext &CFCtx,
-    llvm::ArrayRef<std::optional<TypeErasedDataflowAnalysisState>> BlockStates,
-    const CFGBlock &Block, const Environment &InitEnv,
-    TypeErasedDataflowAnalysis &Analysis,
-    std::function<void(const CFGElement &,
-                       const TypeErasedDataflowAnalysisState &)>
-        PostVisitCFG = nullptr);
-
 /// Performs dataflow analysis and returns a mapping from basic block IDs to
 /// dataflow analysis states that model the respective basic blocks. Indices of
 /// the returned vector correspond to basic block IDs. Returns an error if the
diff --git a/clang/lib/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.cpp b/clang/lib/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.cpp
index 626b57b43755ec7..900aa97e9f6de64 100644
--- a/clang/lib/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.cpp
+++ b/clang/lib/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.cpp
@@ -495,18 +495,6 @@ transferCFGBlock(const CFGBlock &Block, AnalysisContext &AC,
   return State;
 }
 
-TypeErasedDataflowAnalysisState transferBlock(
-    const ControlFlowContext &CFCtx,
-    llvm::ArrayRef<std::optional<TypeErasedDataflowAnalysisState>> BlockStates,
-    const CFGBlock &Block, const Environment &InitEnv,
-    TypeErasedDataflowAnalysis &Analysis,
-    std::function<void(const CFGElement &,
-                       const TypeErasedDataflowAnalysisState &)>
-        PostVisitCFG) {
-  AnalysisContext AC(CFCtx, Analysis, InitEnv, BlockStates);
-  return transferCFGBlock(Block, AC, PostVisitCFG);
-}
-
 llvm::Expected<std::vector<std::optional<TypeErasedDataflowAnalysisState>>>
 runTypeErasedDataflowAnalysis(
     const ControlFlowContext &CFCtx, TypeErasedDataflowAnalysis &Analysis,