1 //===-- SystemZConstantPoolValue.cpp - SystemZ constant-pool value --------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "SystemZConstantPoolValue.h"
10 #include "llvm/ADT/FoldingSet.h"
11 #include "llvm/IR/DerivedTypes.h"
12 #include "llvm/IR/GlobalValue.h"
13 #include "llvm/Support/raw_ostream.h"
14
15 using namespace llvm;
16
17 SystemZConstantPoolValue::
SystemZConstantPoolValue(const GlobalValue * gv,SystemZCP::SystemZCPModifier modifier)18 SystemZConstantPoolValue(const GlobalValue *gv,
19 SystemZCP::SystemZCPModifier modifier)
20 : MachineConstantPoolValue(gv->getType()), GV(gv), Modifier(modifier) {}
21
22 SystemZConstantPoolValue *
Create(const GlobalValue * GV,SystemZCP::SystemZCPModifier Modifier)23 SystemZConstantPoolValue::Create(const GlobalValue *GV,
24 SystemZCP::SystemZCPModifier Modifier) {
25 return new SystemZConstantPoolValue(GV, Modifier);
26 }
27
28 int SystemZConstantPoolValue::
getExistingMachineCPValue(MachineConstantPool * CP,unsigned Alignment)29 getExistingMachineCPValue(MachineConstantPool *CP, unsigned Alignment) {
30 unsigned AlignMask = Alignment - 1;
31 const std::vector<MachineConstantPoolEntry> &Constants = CP->getConstants();
32 for (unsigned I = 0, E = Constants.size(); I != E; ++I) {
33 if (Constants[I].isMachineConstantPoolEntry() &&
34 (Constants[I].getAlignment() & AlignMask) == 0) {
35 auto *ZCPV =
36 static_cast<SystemZConstantPoolValue *>(Constants[I].Val.MachineCPVal);
37 if (ZCPV->GV == GV && ZCPV->Modifier == Modifier)
38 return I;
39 }
40 }
41 return -1;
42 }
43
addSelectionDAGCSEId(FoldingSetNodeID & ID)44 void SystemZConstantPoolValue::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
45 ID.AddPointer(GV);
46 ID.AddInteger(Modifier);
47 }
48
print(raw_ostream & O) const49 void SystemZConstantPoolValue::print(raw_ostream &O) const {
50 O << GV << "@" << int(Modifier);
51 }
52