From 4683395808cf9f4eca70275dd626334994f35330 Mon Sep 17 00:00:00 2001
From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Tue, 10 Mar 2015 15:06:38 +0000
Subject: [PATCH] Hexagon: Remove pass that does nothing at all

llvm-svn: 231791
---
 llvm/lib/Target/Hexagon/CMakeLists.txt             |   1 -
 llvm/lib/Target/Hexagon/Hexagon.h                  |   1 -
 .../lib/Target/Hexagon/HexagonSplitTFRCondSets.cpp | 101 ---------------------
 llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp   |   3 -
 4 files changed, 106 deletions(-)
 delete mode 100644 llvm/lib/Target/Hexagon/HexagonSplitTFRCondSets.cpp

diff --git a/llvm/lib/Target/Hexagon/CMakeLists.txt b/llvm/lib/Target/Hexagon/CMakeLists.txt
index eaa8bef..c6ffb96 100644
--- a/llvm/lib/Target/Hexagon/CMakeLists.txt
+++ b/llvm/lib/Target/Hexagon/CMakeLists.txt
@@ -31,7 +31,6 @@ add_llvm_target(HexagonCodeGen
   HexagonRemoveSZExtArgs.cpp
   HexagonSelectionDAGInfo.cpp
   HexagonSplitConst32AndConst64.cpp
-  HexagonSplitTFRCondSets.cpp
   HexagonSubtarget.cpp
   HexagonTargetMachine.cpp
   HexagonTargetObjectFile.cpp
diff --git a/llvm/lib/Target/Hexagon/Hexagon.h b/llvm/lib/Target/Hexagon/Hexagon.h
index e0a3b2f..dfe79f9 100644
--- a/llvm/lib/Target/Hexagon/Hexagon.h
+++ b/llvm/lib/Target/Hexagon/Hexagon.h
@@ -36,7 +36,6 @@ namespace llvm {
   FunctionPass *createHexagonRemoveExtendArgs(const HexagonTargetMachine &TM);
   FunctionPass *createHexagonCFGOptimizer();
 
-  FunctionPass *createHexagonSplitTFRCondSets();
   FunctionPass *createHexagonSplitConst32AndConst64();
   FunctionPass *createHexagonExpandPredSpillCode();
   FunctionPass *createHexagonHardwareLoops();
diff --git a/llvm/lib/Target/Hexagon/HexagonSplitTFRCondSets.cpp b/llvm/lib/Target/Hexagon/HexagonSplitTFRCondSets.cpp
deleted file mode 100644
index 731bc85..0000000
--- a/llvm/lib/Target/Hexagon/HexagonSplitTFRCondSets.cpp
+++ /dev/null
@@ -1,101 +0,0 @@
-//===-- HexagonSplitTFRCondSets.cpp - split TFR condsets into xfers -------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//
-//===----------------------------------------------------------------------===//
-// This pass tries to provide opportunities for better optimization of muxes.
-// The default code generated for something like: flag = (a == b) ? 1 : 3;
-// would be:
-//
-//   {p0 = cmp.eq(r0,r1)}
-//   {r3 = mux(p0,#1,#3)}
-//
-// This requires two packets.  If we use .new predicated immediate transfers,
-// then we can do this in a single packet, e.g.:
-//
-//   {p0 = cmp.eq(r0,r1)
-//    if (p0.new) r3 = #1
-//    if (!p0.new) r3 = #3}
-//
-// Note that the conditional assignments are not generated in .new form here.
-// We assume opptimisically that they will be formed later.
-//
-//===----------------------------------------------------------------------===//
-
-#include "Hexagon.h"
-#include "HexagonMachineFunctionInfo.h"
-#include "HexagonSubtarget.h"
-#include "HexagonTargetMachine.h"
-#include "llvm/CodeGen/LatencyPriorityQueue.h"
-#include "llvm/CodeGen/MachineDominators.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/CodeGen/MachineLoopInfo.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/Passes.h"
-#include "llvm/CodeGen/ScheduleHazardRecognizer.h"
-#include "llvm/CodeGen/SchedulerRegistry.h"
-#include "llvm/Support/Compiler.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetRegisterInfo.h"
-
-using namespace llvm;
-
-#define DEBUG_TYPE "xfer"
-
-namespace llvm {
-  void initializeHexagonSplitTFRCondSetsPass(PassRegistry&);
-}
-
-
-namespace {
-
-class HexagonSplitTFRCondSets : public MachineFunctionPass {
- public:
-    static char ID;
-    HexagonSplitTFRCondSets() : MachineFunctionPass(ID) {
-      initializeHexagonSplitTFRCondSetsPass(*PassRegistry::getPassRegistry());
-    }
-
-    const char *getPassName() const override {
-      return "Hexagon Split TFRCondSets";
-    }
-    bool runOnMachineFunction(MachineFunction &Fn) override;
-};
-
-
-char HexagonSplitTFRCondSets::ID = 0;
-
-
-bool HexagonSplitTFRCondSets::runOnMachineFunction(MachineFunction &Fn) {
-  return true;
-}
-
-}
-
-//===----------------------------------------------------------------------===//
-//                         Public Constructor Functions
-//===----------------------------------------------------------------------===//
-
-static void initializePassOnce(PassRegistry &Registry) {
-  const char *Name = "Hexagon Split TFRCondSets";
-  PassInfo *PI = new PassInfo(Name, "hexagon-split-tfr",
-                              &HexagonSplitTFRCondSets::ID, nullptr, false,
-                              false);
-  Registry.registerPass(*PI, true);
-}
-
-void llvm::initializeHexagonSplitTFRCondSetsPass(PassRegistry &Registry) {
-  CALL_ONCE_INITIALIZATION(initializePassOnce)
-}
-
-FunctionPass *llvm::createHexagonSplitTFRCondSets() {
-  return new HexagonSplitTFRCondSets();
-}
diff --git a/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp b/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
index 64f75a3..f40c256 100644
--- a/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonTargetMachine.cpp
@@ -159,9 +159,6 @@ void HexagonPassConfig::addPreEmitPass() {
   // Expand Spill code for predicate registers.
   addPass(createHexagonExpandPredSpillCode(), false);
 
-  // Split up TFRcondsets into conditional transfers.
-  addPass(createHexagonSplitTFRCondSets(), false);
-
   // Create Packets.
   if (!NoOpt) {
     if (!DisableHardwareLoops)
-- 
2.7.4