commit f4ef2d0d9dbf6f696386b786eb60884a933685b0
author Olivier Deprez <olivier.deprez@arm.com> Tue Apr 20 13:36:24 2021 +0200
committer Daniel Boulby <daniel.boulby@arm.com> Tue Oct 12 13:31:56 2021 +0100
tree e9081b61fa2bfde16861ab58927c14bb2f1bf505
parent 07c3246c6f9cf9e7faf344ed396d9c90fc2ca32e

Update prebuilt Clang to r416183b from Android.

https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef

clang 12.0.5 (based on r416183b) from build 7284624.

Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>

linux-x64/clang/include/llvm/CodeGen/TailDuplicator.h

diff --git a/linux-x64/clang/include/llvm/CodeGen/TailDuplicator.h b/linux-x64/clang/include/llvm/CodeGen/TailDuplicator.h
index 358798d..6862bb2 100644
--- a/linux-x64/clang/include/llvm/CodeGen/TailDuplicator.h
+++ b/linux-x64/clang/include/llvm/CodeGen/TailDuplicator.h
@@ -18,6 +18,7 @@
 #include "llvm/ADT/DenseSet.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/SmallVector.h"
+#include "llvm/CodeGen/MBFIWrapper.h"
 #include "llvm/CodeGen/TargetInstrInfo.h"
 #include <utility>
 #include <vector>
@@ -25,11 +26,13 @@
 namespace llvm {
 
 class MachineBasicBlock;
+class MachineBlockFrequencyInfo;
 class MachineBranchProbabilityInfo;
 class MachineFunction;
 class MachineInstr;
 class MachineModuleInfo;
 class MachineRegisterInfo;
+class ProfileSummaryInfo;
 class TargetRegisterInfo;
 
 /// Utility class to perform tail duplication.
@@ -40,18 +43,20 @@
   const MachineModuleInfo *MMI;
   MachineRegisterInfo *MRI;
   MachineFunction *MF;
+  MBFIWrapper *MBFI;
+  ProfileSummaryInfo *PSI;
   bool PreRegAlloc;
   bool LayoutMode;
   unsigned TailDupSize;
 
   // A list of virtual registers for which to update SSA form.
-  SmallVector<unsigned, 16> SSAUpdateVRs;
+  SmallVector<Register, 16> SSAUpdateVRs;
 
   // For each virtual register in SSAUpdateVals keep a list of source virtual
   // registers.
-  using AvailableValsTy = std::vector<std::pair<MachineBasicBlock *, unsigned>>;
+  using AvailableValsTy = std::vector<std::pair<MachineBasicBlock *, Register>>;
 
-  DenseMap<unsigned, AvailableValsTy> SSAUpdateVals;
+  DenseMap<Register, AvailableValsTy> SSAUpdateVals;
 
 public:
   /// Prepare to run on a specific machine function.
@@ -65,6 +70,8 @@
   ///     default implies using the command line value TailDupSize.
   void initMF(MachineFunction &MF, bool PreRegAlloc,
               const MachineBranchProbabilityInfo *MBPI,
+              MBFIWrapper *MBFI,
+              ProfileSummaryInfo *PSI,
               bool LayoutMode, unsigned TailDupSize = 0);
 
   bool tailDuplicateBlocks();
@@ -80,41 +87,44 @@
   /// of predecessors that received a copy of \p MBB.
   /// If \p RemovalCallback is non-null. It will be called before MBB is
   /// deleted.
+  /// If \p CandidatePtr is not null, duplicate into these blocks only.
   bool tailDuplicateAndUpdate(
       bool IsSimple, MachineBasicBlock *MBB,
       MachineBasicBlock *ForcedLayoutPred,
       SmallVectorImpl<MachineBasicBlock*> *DuplicatedPreds = nullptr,
-      function_ref<void(MachineBasicBlock *)> *RemovalCallback = nullptr);
+      function_ref<void(MachineBasicBlock *)> *RemovalCallback = nullptr,
+      SmallVectorImpl<MachineBasicBlock *> *CandidatePtr = nullptr);
 
 private:
   using RegSubRegPair = TargetInstrInfo::RegSubRegPair;
 
-  void addSSAUpdateEntry(unsigned OrigReg, unsigned NewReg,
+  void addSSAUpdateEntry(Register OrigReg, Register NewReg,
                          MachineBasicBlock *BB);
   void processPHI(MachineInstr *MI, MachineBasicBlock *TailBB,
                   MachineBasicBlock *PredBB,
-                  DenseMap<unsigned, RegSubRegPair> &LocalVRMap,
-                  SmallVectorImpl<std::pair<unsigned, RegSubRegPair>> &Copies,
-                  const DenseSet<unsigned> &UsedByPhi, bool Remove);
+                  DenseMap<Register, RegSubRegPair> &LocalVRMap,
+                  SmallVectorImpl<std::pair<Register, RegSubRegPair>> &Copies,
+                  const DenseSet<Register> &UsedByPhi, bool Remove);
   void duplicateInstruction(MachineInstr *MI, MachineBasicBlock *TailBB,
                             MachineBasicBlock *PredBB,
-                            DenseMap<unsigned, RegSubRegPair> &LocalVRMap,
-                            const DenseSet<unsigned> &UsedByPhi);
+                            DenseMap<Register, RegSubRegPair> &LocalVRMap,
+                            const DenseSet<Register> &UsedByPhi);
   void updateSuccessorsPHIs(MachineBasicBlock *FromBB, bool isDead,
                             SmallVectorImpl<MachineBasicBlock *> &TDBBs,
                             SmallSetVector<MachineBasicBlock *, 8> &Succs);
   bool canCompletelyDuplicateBB(MachineBasicBlock &BB);
   bool duplicateSimpleBB(MachineBasicBlock *TailBB,
                          SmallVectorImpl<MachineBasicBlock *> &TDBBs,
-                         const DenseSet<unsigned> &RegsUsedByPhi,
+                         const DenseSet<Register> &RegsUsedByPhi,
                          SmallVectorImpl<MachineInstr *> &Copies);
   bool tailDuplicate(bool IsSimple,
                      MachineBasicBlock *TailBB,
                      MachineBasicBlock *ForcedLayoutPred,
                      SmallVectorImpl<MachineBasicBlock *> &TDBBs,
-                     SmallVectorImpl<MachineInstr *> &Copies);
+                     SmallVectorImpl<MachineInstr *> &Copies,
+                     SmallVectorImpl<MachineBasicBlock *> *CandidatePtr);
   void appendCopies(MachineBasicBlock *MBB,
-                 SmallVectorImpl<std::pair<unsigned,RegSubRegPair>> &CopyInfos,
+                 SmallVectorImpl<std::pair<Register, RegSubRegPair>> &CopyInfos,
                  SmallVectorImpl<MachineInstr *> &Copies);
 
   void removeDeadBlock(