From cfca06d7963fa0909f90483b42a6d7d194d01e08 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Sun, 26 Jul 2020 19:36:28 +0000
Subject: Vendor import of llvm-project master 2e10b7a39b9, the last commit
 before the llvmorg-12-init tag, from which release/11.x was branched.

---
 llvm/lib/CodeGen/BranchFolding.h | 31 ++-----------------------------
 1 file changed, 2 insertions(+), 29 deletions(-)

(limited to 'llvm/lib/CodeGen/BranchFolding.h')

diff --git a/llvm/lib/CodeGen/BranchFolding.h b/llvm/lib/CodeGen/BranchFolding.h
index 7a4c68ea09f51..49c6bcae2db43 100644
--- a/llvm/lib/CodeGen/BranchFolding.h
+++ b/llvm/lib/CodeGen/BranchFolding.h
@@ -13,7 +13,6 @@
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/CodeGen/LivePhysRegs.h"
 #include "llvm/CodeGen/MachineBasicBlock.h"
-#include "llvm/Support/BlockFrequency.h"
 #include "llvm/Support/Compiler.h"
 #include <cstdint>
 #include <vector>
@@ -21,21 +20,18 @@
 namespace llvm {
 
 class BasicBlock;
-class MachineBlockFrequencyInfo;
 class MachineBranchProbabilityInfo;
 class MachineFunction;
 class MachineLoopInfo;
 class MachineModuleInfo;
 class MachineRegisterInfo;
+class MBFIWrapper;
 class ProfileSummaryInfo;
-class raw_ostream;
 class TargetInstrInfo;
 class TargetRegisterInfo;
 
   class LLVM_LIBRARY_VISIBILITY BranchFolder {
   public:
-    class MBFIWrapper;
-
     explicit BranchFolder(bool defaultEnableTailMerge,
                           bool CommonHoist,
                           MBFIWrapper &FreqInfo,
@@ -49,7 +45,7 @@ class TargetRegisterInfo;
     /// given function.  Block placement changes the layout and may create new
     /// tail merging opportunities.
     bool OptimizeFunction(MachineFunction &MF, const TargetInstrInfo *tii,
-                          const TargetRegisterInfo *tri, MachineModuleInfo *mmi,
+                          const TargetRegisterInfo *tri,
                           MachineLoopInfo *mli = nullptr,
                           bool AfterPlacement = false);
 
@@ -128,32 +124,9 @@ class TargetRegisterInfo;
     const TargetInstrInfo *TII;
     const MachineRegisterInfo *MRI;
     const TargetRegisterInfo *TRI;
-    MachineModuleInfo *MMI;
     MachineLoopInfo *MLI;
     LivePhysRegs LiveRegs;
 
-  public:
-    /// This class keeps track of branch frequencies of newly created
-    /// blocks and tail-merged blocks.
-    class MBFIWrapper {
-    public:
-      MBFIWrapper(const MachineBlockFrequencyInfo &I) : MBFI(I) {}
-
-      BlockFrequency getBlockFreq(const MachineBasicBlock *MBB) const;
-      void setBlockFreq(const MachineBasicBlock *MBB, BlockFrequency F);
-      raw_ostream &printBlockFreq(raw_ostream &OS,
-                                  const MachineBasicBlock *MBB) const;
-      raw_ostream &printBlockFreq(raw_ostream &OS,
-                                  const BlockFrequency Freq) const;
-      void view(const Twine &Name, bool isSimple = true);
-      uint64_t getEntryFreq() const;
-      const MachineBlockFrequencyInfo &getMBFI() { return MBFI; }
-
-    private:
-      const MachineBlockFrequencyInfo &MBFI;
-      DenseMap<const MachineBasicBlock *, BlockFrequency> MergedBBFreq;
-    };
-
   private:
     MBFIWrapper &MBBFreqInfo;
     const MachineBranchProbabilityInfo &MBPI;
-- 
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