Revert "[GVN] Basic optimization remark support"

This reverts commit r288046.

Trying to see if the revert fixes a compiler crash during a stage2 LTO
build with a GVN backtrace.

llvm-svn: 288179

1 files changed, 3 insertions, 20 deletions

diff --git a/llvm/lib/Transforms/Scalar/GVN.cpp b/llvm/lib/Transforms/Scalar/GVN.cpp
index 83a7efe14e9..d5234c0f7e3 100644
--- a/llvm/lib/Transforms/Scalar/GVN.cpp
+++ b/llvm/lib/Transforms/Scalar/GVN.cpp
@@ -33,7 +33,6 @@
 #include "llvm/Analysis/Loads.h"
 #include "llvm/Analysis/MemoryBuiltins.h"
 #include "llvm/Analysis/MemoryDependenceAnalysis.h"
-#include "llvm/Analysis/OptimizationDiagnosticInfo.h"
 #include "llvm/Analysis/PHITransAddr.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
@@ -587,8 +586,7 @@ PreservedAnalyses GVN::run(Function &F, FunctionAnalysisManager &AM) {
   auto &TLI = AM.getResult<TargetLibraryAnalysis>(F);
   auto &AA = AM.getResult<AAManager>(F);
   auto &MemDep = AM.getResult<MemoryDependenceAnalysis>(F);
-  auto &ORE = AM.getResult<OptimizationRemarkEmitterAnalysis>(F);
-  bool Changed = runImpl(F, AC, DT, TLI, AA, &MemDep, &ORE);
+  bool Changed = runImpl(F, AC, DT, TLI, AA, &MemDep);
   if (!Changed)
     return PreservedAnalyses::all();
   PreservedAnalyses PA;
@@ -1584,18 +1582,10 @@ bool GVN::PerformLoadPRE(LoadInst *LI, AvailValInBlkVect &ValuesPerBlock,
   if (V->getType()->getScalarType()->isPointerTy())
     MD->invalidateCachedPointerInfo(V);
   markInstructionForDeletion(LI);
-  ORE->emit(OptimizationRemark(DEBUG_TYPE, "LoadPRE", LI)
-            << "load eliminated by PRE");
   ++NumPRELoad;
   return true;
 }
 
-static void reportLoadElim(LoadInst *LI, OptimizationRemarkEmitter *ORE) {
-  ORE->emit(OptimizationRemark(DEBUG_TYPE, "LoadElim", LI)
-            << "load of type " << ore::NV("Type", LI->getType())
-            << " eliminated");
-}
-
 /// Attempt to eliminate a load whose dependencies are
 /// non-local by performing PHI construction.
 bool GVN::processNonLocalLoad(LoadInst *LI) {
@@ -1666,7 +1656,6 @@ bool GVN::processNonLocalLoad(LoadInst *LI) {
       MD->invalidateCachedPointerInfo(V);
     markInstructionForDeletion(LI);
     ++NumGVNLoad;
-    reportLoadElim(LI, ORE);
     return true;
   }
 
@@ -1813,7 +1802,6 @@ bool GVN::processLoad(LoadInst *L) {
     patchAndReplaceAllUsesWith(L, AvailableValue);
     markInstructionForDeletion(L);
     ++NumGVNLoad;
-    reportLoadElim(L, ORE);
     // Tell MDA to rexamine the reused pointer since we might have more
     // information after forwarding it.
     if (MD && AvailableValue->getType()->getScalarType()->isPointerTy())
@@ -2191,8 +2179,7 @@ bool GVN::processInstruction(Instruction *I) {
 /// runOnFunction - This is the main transformation entry point for a function.
 bool GVN::runImpl(Function &F, AssumptionCache &RunAC, DominatorTree &RunDT,
                   const TargetLibraryInfo &RunTLI, AAResults &RunAA,
-                  MemoryDependenceResults *RunMD,
-                  OptimizationRemarkEmitter *RunORE) {
+                  MemoryDependenceResults *RunMD) {
   AC = &RunAC;
   DT = &RunDT;
   VN.setDomTree(DT);
@@ -2200,7 +2187,6 @@ bool GVN::runImpl(Function &F, AssumptionCache &RunAC, DominatorTree &RunDT,
   VN.setAliasAnalysis(&RunAA);
   MD = RunMD;
   VN.setMemDep(MD);
-  ORE = RunORE;
 
   bool Changed = false;
   bool ShouldContinue = true;
@@ -2713,8 +2699,7 @@ public:
         getAnalysis<TargetLibraryInfoWrapperPass>().getTLI(),
         getAnalysis<AAResultsWrapperPass>().getAAResults(),
         NoLoads ? nullptr
-                : &getAnalysis<MemoryDependenceWrapperPass>().getMemDep(),
-        &getAnalysis<OptimizationRemarkEmitterWrapperPass>().getORE());
+                : &getAnalysis<MemoryDependenceWrapperPass>().getMemDep());
   }
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {
@@ -2727,7 +2712,6 @@ public:
 
     AU.addPreserved<DominatorTreeWrapperPass>();
     AU.addPreserved<GlobalsAAWrapperPass>();
-    AU.addRequired<OptimizationRemarkEmitterWrapperPass>();
   }
 
 private:
@@ -2749,5 +2733,4 @@ INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
-INITIALIZE_PASS_DEPENDENCY(OptimizationRemarkEmitterWrapperPass)
 INITIALIZE_PASS_END(GVNLegacyPass, "gvn", "Global Value Numbering", false, false)