[NFC] Rename the DivergenceAnalysis to LegacyDivergenceAnalysis

Summary:
This is patch 1 of the new DivergenceAnalysis (https://reviews.llvm.org/D50433).

The purpose of this patch is to free up the name DivergenceAnalysis for the new generic
implementation. The generic implementation class will be shared by specialized
divergence analysis classes.

Patch by: Simon Moll

Reviewed By: nhaehnle

Subscribers: jvesely, jholewinski, arsenm, nhaehnle, mgorny, jfb, llvm-commits

Differential Revision: https://reviews.llvm.org/D50434

Change-Id: Ie8146b11be2c50d5312f30e11c7a3036a15b48cb
llvm-svn: 341071

3 files changed, 12 insertions, 12 deletions

diff --git a/llvm/lib/Analysis/Analysis.cpp b/llvm/lib/Analysis/Analysis.cpp
index 30576cf1ae1..49b1bdb2e77 100644
--- a/llvm/lib/Analysis/Analysis.cpp
+++ b/llvm/lib/Analysis/Analysis.cpp
@@ -39,7 +39,6 @@ void llvm::initializeAnalysis(PassRegistry &Registry) {
   initializeDependenceAnalysisWrapperPassPass(Registry);
   initializeDelinearizationPass(Registry);
   initializeDemandedBitsWrapperPassPass(Registry);
-  initializeDivergenceAnalysisPass(Registry);
   initializeDominanceFrontierWrapperPassPass(Registry);
   initializeDomViewerPass(Registry);
   initializeDomPrinterPass(Registry);
@@ -58,6 +57,7 @@ void llvm::initializeAnalysis(PassRegistry &Registry) {
   initializeLazyBlockFrequencyInfoPassPass(Registry);
   initializeLazyValueInfoWrapperPassPass(Registry);
   initializeLazyValueInfoPrinterPass(Registry);
+  initializeLegacyDivergenceAnalysisPass(Registry);
   initializeLintPass(Registry);
   initializeLoopInfoWrapperPassPass(Registry);
   initializeMemDepPrinterPass(Registry);
diff --git a/llvm/lib/Analysis/CMakeLists.txt b/llvm/lib/Analysis/CMakeLists.txt
index 6a228e85aa8..5f20b208a84 100644
--- a/llvm/lib/Analysis/CMakeLists.txt
+++ b/llvm/lib/Analysis/CMakeLists.txt
@@ -25,7 +25,6 @@ add_llvm_library(LLVMAnalysis
   Delinearization.cpp
   DemandedBits.cpp
   DependenceAnalysis.cpp
-  DivergenceAnalysis.cpp
   DomPrinter.cpp
   DominanceFrontier.cpp
   EHPersonalities.cpp
@@ -44,6 +43,7 @@ add_llvm_library(LLVMAnalysis
   LazyBlockFrequencyInfo.cpp
   LazyCallGraph.cpp
   LazyValueInfo.cpp
+  LegacyDivergenceAnalysis.cpp
   Lint.cpp
   Loads.cpp
   LoopAccessAnalysis.cpp
diff --git a/llvm/lib/Analysis/DivergenceAnalysis.cpp b/llvm/lib/Analysis/LegacyDivergenceAnalysis.cpp
index f5f1874c930..c417862524e 100644
--- a/llvm/lib/Analysis/DivergenceAnalysis.cpp
+++ b/llvm/lib/Analysis/LegacyDivergenceAnalysis.cpp
@@ -1,4 +1,4 @@
-//===- DivergenceAnalysis.cpp --------- Divergence Analysis Implementation -==//
+//===- LegacyDivergenceAnalysis.cpp --------- Legacy Divergence Analysis Implementation -==//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -64,7 +64,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/Analysis/DivergenceAnalysis.h"
+#include "llvm/Analysis/LegacyDivergenceAnalysis.h"
 #include "llvm/Analysis/Passes.h"
 #include "llvm/Analysis/PostDominators.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
@@ -265,25 +265,25 @@ void DivergencePropagator::propagate() {
 } /// end namespace anonymous
 
 // Register this pass.
-char DivergenceAnalysis::ID = 0;
-INITIALIZE_PASS_BEGIN(DivergenceAnalysis, "divergence", "Divergence Analysis",
+char LegacyDivergenceAnalysis::ID = 0;
+INITIALIZE_PASS_BEGIN(LegacyDivergenceAnalysis, "divergence", "Legacy Divergence Analysis",
                       false, true)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(PostDominatorTreeWrapperPass)
-INITIALIZE_PASS_END(DivergenceAnalysis, "divergence", "Divergence Analysis",
+INITIALIZE_PASS_END(LegacyDivergenceAnalysis, "divergence", "Legacy Divergence Analysis",
                     false, true)
 
-FunctionPass *llvm::createDivergenceAnalysisPass() {
-  return new DivergenceAnalysis();
+FunctionPass *llvm::createLegacyDivergenceAnalysisPass() {
+  return new LegacyDivergenceAnalysis();
 }
 
-void DivergenceAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
+void LegacyDivergenceAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addRequired<DominatorTreeWrapperPass>();
   AU.addRequired<PostDominatorTreeWrapperPass>();
   AU.setPreservesAll();
 }
 
-bool DivergenceAnalysis::runOnFunction(Function &F) {
+bool LegacyDivergenceAnalysis::runOnFunction(Function &F) {
   auto *TTIWP = getAnalysisIfAvailable<TargetTransformInfoWrapperPass>();
   if (TTIWP == nullptr)
     return false;
@@ -308,7 +308,7 @@ bool DivergenceAnalysis::runOnFunction(Function &F) {
   return false;
 }
 
-void DivergenceAnalysis::print(raw_ostream &OS, const Module *) const {
+void LegacyDivergenceAnalysis::print(raw_ostream &OS, const Module *) const {
   if (DivergentValues.empty())
     return;
   const Value *FirstDivergentValue = *DivergentValues.begin();