Reverting r181331.

Missing file, HexagonSplitConst32AndConst64.cpp, from lib/Target/Hexagon/CMakeLists.txt.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181334 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/Hexagon/Hexagon.h

@@ -37,8 +37,6 @@ namespace llvm {
   FunctionPass *createHexagonCFGOptimizer(const HexagonTargetMachine &TM);
 
   FunctionPass *createHexagonSplitTFRCondSets(const HexagonTargetMachine &TM);
-  FunctionPass *createHexagonSplitConst32AndConst64(
-                      const HexagonTargetMachine &TM);
   FunctionPass *createHexagonExpandPredSpillCode(
                       const HexagonTargetMachine &TM);
   FunctionPass *createHexagonHardwareLoops();

lib/Target/Hexagon/HexagonISelLowering.cpp

@@ -948,6 +948,7 @@ HexagonTargetLowering::LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const {
 SDValue
 HexagonTargetLowering::LowerConstantPool(SDValue Op, SelectionDAG &DAG) const {
   EVT ValTy = Op.getValueType();
+
   DebugLoc dl = Op.getDebugLoc();
   ConstantPoolSDNode *CP = cast<ConstantPoolSDNode>(Op);
   SDValue Res;

lib/Target/Hexagon/HexagonSplitConst32AndConst64.cpp

@@ -1,176 +0,0 @@
-//=== HexagonSplitConst32AndConst64.cpp - split CONST32/Const64 into HI/LO ===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// When the compiler is invoked with no small data, for instance, with the -G0
-// command line option, then all CONST32_* opcodes should be broken down into
-// appropriate LO and HI instructions. This splitting is done by this pass.
-// The only reason this is not done in the DAG lowering itself is that there
-// is no simple way of getting the register allocator to allot the same hard
-// register to the result of LO and HI instructions. This pass is always
-// scheduled after register allocation.
-//
-//===----------------------------------------------------------------------===//
-#define DEBUG_TYPE "xfer"
-#include "llvm/CodeGen/Passes.h"
-#include "llvm/CodeGen/ScheduleDAGInstrs.h"
-#include "llvm/CodeGen/LatencyPriorityQueue.h"
-#include "llvm/CodeGen/SchedulerRegistry.h"
-#include "llvm/CodeGen/MachineDominators.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineLoopInfo.h"
-#include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/CodeGen/ScheduleHazardRecognizer.h"
-#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/Support/Compiler.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "HexagonTargetMachine.h"
-#include "HexagonSubtarget.h"
-#include "HexagonMachineFunctionInfo.h"
-#include <map>
-#include <iostream>
-
-#include "llvm/Support/CommandLine.h"
-#define DEBUG_TYPE "xfer"
-
-
-using namespace llvm;
-
-namespace {
-
-class HexagonSplitConst32AndConst64 : public MachineFunctionPass {
-    const HexagonTargetMachine& QTM;
-    const HexagonSubtarget &QST;
-
- public:
-    static char ID;
-    HexagonSplitConst32AndConst64(const HexagonTargetMachine& TM)
-      : MachineFunctionPass(ID), QTM(TM), QST(*TM.getSubtargetImpl()) {}
-
-    const char *getPassName() const {
-      return "Hexagon Split Const32s and Const64s";
-    }
-    bool runOnMachineFunction(MachineFunction &Fn);
-};
-
-
-char HexagonSplitConst32AndConst64::ID = 0;
-
-
-bool HexagonSplitConst32AndConst64::runOnMachineFunction(MachineFunction &Fn) {
-
-  const TargetInstrInfo *TII = QTM.getInstrInfo();
-
-  // Loop over all of the basic blocks
-  for (MachineFunction::iterator MBBb = Fn.begin(), MBBe = Fn.end();
-       MBBb != MBBe; ++MBBb) {
-    MachineBasicBlock* MBB = MBBb;
-    // Traverse the basic block
-    MachineBasicBlock::iterator MII = MBB->begin();
-    MachineBasicBlock::iterator MIE = MBB->end ();
-    while (MII != MIE) {
-      MachineInstr *MI = MII;
-      int Opc = MI->getOpcode();
-      if (Opc == Hexagon::CONST32_set) {
-        int DestReg = MI->getOperand(0).getReg();
-        MachineOperand &Symbol = MI->getOperand (1);
-
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::LO), DestReg).addOperand(Symbol);
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::HI), DestReg).addOperand(Symbol);
-        // MBB->erase returns the iterator to the next instruction, which is the
-        // one we want to process next
-        MII = MBB->erase (MI);
-        continue;
-      }
-      else if (Opc == Hexagon::CONST32_set_jt) {
-        int DestReg = MI->getOperand(0).getReg();
-        MachineOperand &Symbol = MI->getOperand (1);
-
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::LO_jt), DestReg).addOperand(Symbol);
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::HI_jt), DestReg).addOperand(Symbol);
-        // MBB->erase returns the iterator to the next instruction, which is the
-        // one we want to process next
-        MII = MBB->erase (MI);
-        continue;
-      }
-      else if (Opc == Hexagon::CONST32_Label) {
-        int DestReg = MI->getOperand(0).getReg();
-        MachineOperand &Symbol = MI->getOperand (1);
-
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::LO_label), DestReg).addOperand(Symbol);
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::HI_label), DestReg).addOperand(Symbol);
-        // MBB->erase returns the iterator to the next instruction, which is the
-        // one we want to process next
-        MII = MBB->erase (MI);
-        continue;
-      }
-      else if (Opc == Hexagon::CONST32_Int_Real) {
-        int DestReg = MI->getOperand(0).getReg();
-        int64_t ImmValue = MI->getOperand(1).getImm ();
-
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::LOi), DestReg).addImm(ImmValue);
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::HIi), DestReg).addImm(ImmValue);
-        MII = MBB->erase (MI);
-        continue;
-      }
-      else if (Opc == Hexagon::CONST64_Int_Real) {
-        int DestReg = MI->getOperand(0).getReg();
-        int64_t ImmValue = MI->getOperand(1).getImm ();
-        unsigned DestLo =
-          QTM.getRegisterInfo()->getSubReg (DestReg, Hexagon::subreg_loreg);
-        unsigned DestHi =
-          QTM.getRegisterInfo()->getSubReg (DestReg, Hexagon::subreg_hireg);
-
-        int32_t LowWord = (ImmValue & 0xFFFFFFFF);
-        int32_t HighWord = (ImmValue >> 32) & 0xFFFFFFFF;
-
-        // Lower Registers Lower Half
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::LOi), DestLo).addImm(LowWord);
-        // Lower Registers Higher Half
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::HIi), DestLo).addImm(LowWord);
-        // Higher Registers Lower Half
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::LOi), DestHi).addImm(HighWord);
-        // Higher Registers Higher Half.
-        BuildMI (*MBB, MII, MI->getDebugLoc(),
-                 TII->get(Hexagon::HIi), DestHi).addImm(HighWord);
-        MII = MBB->erase (MI);
-        continue;
-       }
-      ++MII;
-    }
-  }
-
-  return true;
-}
-
-}
-
-//===----------------------------------------------------------------------===//
-//                         Public Constructor Functions
-//===----------------------------------------------------------------------===//
-
-FunctionPass *
-llvm::createHexagonSplitConst32AndConst64(const HexagonTargetMachine &TM) {
-  return new HexagonSplitConst32AndConst64(TM);
-}

lib/Target/Hexagon/HexagonTargetMachine.cpp

@@ -15,7 +15,6 @@
 #include "Hexagon.h"
 #include "HexagonISelLowering.h"
 #include "HexagonMachineScheduler.h"
-#include "HexagonTargetObjectFile.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/IR/Module.h"
 #include "llvm/PassManager.h"
@@ -157,17 +156,9 @@ bool HexagonPassConfig::addPostRegAlloc() {
 }
 
 bool HexagonPassConfig::addPreSched2() {
-  const HexagonTargetMachine &TM = getHexagonTargetMachine();
-  HexagonTargetObjectFile &TLOF =
-    (HexagonTargetObjectFile&)(getTargetLowering()->getObjFileLowering());
-
   if (getOptLevel() != CodeGenOpt::None)
     addPass(&IfConverterID);
-  if (!TLOF.IsSmallDataEnabled()) {
+  return false;
-    addPass(createHexagonSplitConst32AndConst64(TM));
-    printAndVerify("After hexagon split const32/64 pass");
-  }
-  return true;
 }
 
 bool HexagonPassConfig::addPreEmitPass() {

lib/Target/Hexagon/HexagonTargetObjectFile.cpp

@@ -25,8 +25,7 @@
 using namespace llvm;
 
 static cl::opt<int> SmallDataThreshold("hexagon-small-data-threshold",
-                                cl::init(8), cl::Hidden,
+                                cl::init(8), cl::Hidden);
-                cl::desc("The maximum size of an object in the sdata section"));
 
 void HexagonTargetObjectFile::Initialize(MCContext &Ctx,
                                          const TargetMachine &TM) {
@@ -47,11 +46,6 @@ void HexagonTargetObjectFile::Initialize(MCContext &Ctx,
 static bool IsInSmallSection(uint64_t Size) {
   return Size > 0 && Size <= (uint64_t)SmallDataThreshold;
 }
-
-bool HexagonTargetObjectFile::IsSmallDataEnabled () const {
-  return SmallDataThreshold > 0;
-}
-
 /// IsGlobalInSmallSection - Return true if this global value should be
 /// placed into small data/bss section.
 bool HexagonTargetObjectFile::IsGlobalInSmallSection(const GlobalValue *GV,

lib/Target/Hexagon/HexagonTargetObjectFile.h

@@ -29,7 +29,6 @@ namespace llvm {
     bool IsGlobalInSmallSection(const GlobalValue *GV,
                                 const TargetMachine &TM) const;
 
-    bool IsSmallDataEnabled () const;
     const MCSection* SelectSectionForGlobal(const GlobalValue *GV,
                                             SectionKind Kind,
                                             Mangler *Mang,

test/CodeGen/Hexagon/split-const32-const64.ll

@@ -1,26 +0,0 @@
-; RUN: llc -march=hexagon -mcpu=hexagonv5 -hexagon-small-data-threshold=0 < %s | FileCheck %s
-
-; Check that CONST32/CONST64 instructions are 'not' generated when
-; small-data-threshold is set to 0.
-
-; with immediate value.
-@a = external global i32
-@b = external global i32
-@la = external global i64
-@lb = external global i64
-
-define void @test1() nounwind {
-; CHECK-NOT: CONST32 
-entry:
-  store i32 12345670, i32* @a, align 4
-  store i32 12345670, i32* @b, align 4
-  ret void
-}
-
-define void @test2() nounwind {
-; CHECK-NOT: CONST64
-entry:
-  store i64 1234567890123, i64* @la, align 8
-  store i64 1234567890123, i64* @lb, align 8
-  ret void
-}