From eb702350f7ac9c8910755fba44a98bc9a09beb4f Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 29 Jul 2002 21:03:33 +0000
Subject: [PATCH] * Eliminate the Provided set.  All Passes now finally just
 automatically   provide themselves.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3124 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Analysis/LiveVar/FunctionLiveVarInfo.h |  1 -
 include/llvm/CodeGen/FunctionLiveVarInfo.h          |  1 -
 include/llvm/PassAnalysisSupport.h                  | 12 +++---------
 lib/Analysis/LoopInfo.cpp                           |  1 -
 lib/Analysis/PostDominators.cpp                     |  1 -
 lib/VMCore/Dominators.cpp                           |  1 -
 6 files changed, 3 insertions(+), 14 deletions(-)

diff --git a/include/llvm/Analysis/LiveVar/FunctionLiveVarInfo.h b/include/llvm/Analysis/LiveVar/FunctionLiveVarInfo.h
index ac21a266333..b120cc0a1b0 100644
--- a/include/llvm/Analysis/LiveVar/FunctionLiveVarInfo.h
+++ b/include/llvm/Analysis/LiveVar/FunctionLiveVarInfo.h
@@ -102,7 +102,6 @@ public:
   // getAnalysisUsage - Provide self!
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
     AU.setPreservesAll();
-    AU.addProvided(ID);
   }
 
   // --------- Functions to access analysis results -------------------
diff --git a/include/llvm/CodeGen/FunctionLiveVarInfo.h b/include/llvm/CodeGen/FunctionLiveVarInfo.h
index ac21a266333..b120cc0a1b0 100644
--- a/include/llvm/CodeGen/FunctionLiveVarInfo.h
+++ b/include/llvm/CodeGen/FunctionLiveVarInfo.h
@@ -102,7 +102,6 @@ public:
   // getAnalysisUsage - Provide self!
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
     AU.setPreservesAll();
-    AU.addProvided(ID);
   }
 
   // --------- Functions to access analysis results -------------------
diff --git a/include/llvm/PassAnalysisSupport.h b/include/llvm/PassAnalysisSupport.h
index e59399d48fe..092be346c7c 100644
--- a/include/llvm/PassAnalysisSupport.h
+++ b/include/llvm/PassAnalysisSupport.h
@@ -25,7 +25,7 @@
 //
 class AnalysisUsage {
   // Sets of analyses required and preserved by a pass
-  std::vector<AnalysisID> Required, Preserved, Provided;
+  std::vector<AnalysisID> Required, Preserved;
   bool PreservesAll;
 public:
   AnalysisUsage() : PreservesAll(false) {}
@@ -46,10 +46,6 @@ public:
     return *this;
   }
 
-  void addProvided(AnalysisID ID) {
-    Provided.push_back(ID);
-  }
-
   // PreservesAll - Set by analyses that do not transform their input at all
   void setPreservesAll() { PreservesAll = true; }
   bool preservesAll() const { return PreservesAll; }
@@ -67,13 +63,12 @@ public:
 
   const std::vector<AnalysisID> &getRequiredSet() const { return Required; }
   const std::vector<AnalysisID> &getPreservedSet() const { return Preserved; }
-  const std::vector<AnalysisID> &getProvidedSet() const { return Provided; }
 };
 
 
 
 //===----------------------------------------------------------------------===//
-// AnalysisResolver - Simple interface implemented by PassManagers objects that
+// AnalysisResolver - Simple interface implemented by PassManager objects that
 // is used to pull analysis information out of them.
 //
 struct AnalysisResolver {
@@ -87,8 +82,7 @@ struct AnalysisResolver {
 
   // getAnalysisToUpdate - Return an analysis result or null if it doesn't exist
   Pass *getAnalysisToUpdate(AnalysisID ID) {
-    Pass *Result = getAnalysisOrNullUp(ID);
-    return Result;
+    return getAnalysisOrNullUp(ID);
   }
 
   virtual unsigned getDepth() const = 0;
diff --git a/lib/Analysis/LoopInfo.cpp b/lib/Analysis/LoopInfo.cpp
index ff5e2fa9dc6..8b3a4348228 100644
--- a/lib/Analysis/LoopInfo.cpp
+++ b/lib/Analysis/LoopInfo.cpp
@@ -73,7 +73,6 @@ void LoopInfo::Calculate(const DominatorSet &DS) {
 void LoopInfo::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesAll();
   AU.addRequired(DominatorSet::ID);
-  AU.addProvided(ID);
 }
 
 void LoopInfo::print(std::ostream &OS) const {
diff --git a/lib/Analysis/PostDominators.cpp b/lib/Analysis/PostDominators.cpp
index 9c960e3b0d4..3321e7ee4ed 100644
--- a/lib/Analysis/PostDominators.cpp
+++ b/lib/Analysis/PostDominators.cpp
@@ -148,7 +148,6 @@ bool PostDominatorSet::runOnFunction(Function &F) {
 //
 void PostDominatorSet::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesAll();
-  AU.addProvided(ID);
   AU.addRequired(UnifyFunctionExitNodes::ID);
 }
 
diff --git a/lib/VMCore/Dominators.cpp b/lib/VMCore/Dominators.cpp
index 9c960e3b0d4..3321e7ee4ed 100644
--- a/lib/VMCore/Dominators.cpp
+++ b/lib/VMCore/Dominators.cpp
@@ -148,7 +148,6 @@ bool PostDominatorSet::runOnFunction(Function &F) {
 //
 void PostDominatorSet::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesAll();
-  AU.addProvided(ID);
   AU.addRequired(UnifyFunctionExitNodes::ID);
 }