Revert r312194: "[MachineOutliner] Add missed optimization remarks for the outliner."

Breaks on buildbot:
http://bb.pgr.jp/builders/test-llvm-i686-linux-RA/builds/6026/steps/test_llvm/logs/LLVM%20%3A%3A%20CodeGen__AArch64__machine-outliner-remarks.ll

llvm-svn: 312219

1 files changed, 1 insertions, 36 deletions

diff --git a/llvm/lib/CodeGen/MachineOutliner.cpp b/llvm/lib/CodeGen/MachineOutliner.cpp
index c12035455ab..9a8eebff2b5 100644
--- a/llvm/lib/CodeGen/MachineOutliner.cpp
+++ b/llvm/lib/CodeGen/MachineOutliner.cpp
@@ -46,7 +46,6 @@
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineInstrBuilder.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/CodeGen/MachineOptimizationRemarkEmitter.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/Support/Allocator.h"
@@ -65,7 +64,6 @@
 #define DEBUG_TYPE "machine-outliner"
 
 using namespace llvm;
-using namespace ore;
 
 STATISTIC(NumOutlined, "Number of candidates outlined");
 STATISTIC(FunctionsCreated, "Number of functions created");
@@ -897,41 +895,8 @@ MachineOutliner::findCandidates(SuffixTree &ST, const TargetInstrInfo &TII,
     size_t OutliningCost = CallOverhead + FrameOverhead + SequenceOverhead;
     size_t NotOutliningCost = SequenceOverhead * Parent.OccurrenceCount;
 
-    // Is it better to outline this candidate than not?
-    if (NotOutliningCost <= OutliningCost) {
-      // Outlining this candidate would take more instructions than not
-      // outlining.
-      // Emit a remark explaining why we didn't outline this candidate.
-      std::pair<MachineBasicBlock::iterator, MachineBasicBlock::iterator> C =
-          CandidateClass[0];
-      MachineOptimizationRemarkEmitter MORE(
-          *(C.first->getParent()->getParent()), nullptr);
-      MachineOptimizationRemarkMissed R(DEBUG_TYPE, "NotOutliningCheaper",
-                                        C.first->getDebugLoc(),
-                                        C.first->getParent());
-      R << "Did not outline " << NV("Length", StringLen) << " instructions"
-        << " from " << NV("NumOccurrences", CandidateClass.size())
-        << " locations."
-        << " Instructions from outlining all occurrences ("
-        << NV("OutliningCost", OutliningCost) << ")"
-        << " >= Unoutlined instruction count ("
-        << NV("NotOutliningCost", NotOutliningCost) << ")"
-        << " (Also found at: ";
-
-      // Tell the user the other places the candidate was found.
-      for (size_t i = 1, e = CandidateClass.size(); i < e; i++) {
-        R << NV((Twine("OtherStartLoc") + Twine(i)).str(),
-                CandidateClass[i].first->getDebugLoc());
-        if (i != e - 1)
-          R << ", ";
-      }
-
-      R << ")";
-      MORE.emit(R);
-
-      // Move to the next candidate.
+    if (NotOutliningCost <= OutliningCost)
       continue;
-    }
 
     size_t Benefit = NotOutliningCost - OutliningCost;