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Avoid dependency between TableGen and CodeGen

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Duplicate a few common definitions between DFAPacketizer.cpp and
DFAPacketizerEmitter.cpp to avoid including files from CodeGen
in TableGen.

llvm-svn: 253820
This commit is contained in:
Krzysztof Parzyszek 2015-11-22 15:20:19 +00:00
parent 0fd11526e2
commit 6753f33388
4 changed files with 102 additions and 68 deletions
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33
llvm/include/llvm/CodeGen/DFAPacketizer.h
View File

@ -27,7 +27,6 @@
#define LLVM_CODEGEN_DFAPACKETIZER_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/CodeGen/DFAPacketizerDefs.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include <map>
@ -41,6 +40,34 @@ class InstrItineraryData;
class DefaultVLIWScheduler;
class SUnit;
// --------------------------------------------------------------------
// Definitions shared between DFAPacketizer.cpp and DFAPacketizerEmitter.cpp
// DFA_MAX_RESTERMS * DFA_MAX_RESOURCES must fit within sizeof DFAInput.
// This is verified in DFAPacketizer.cpp:DFAPacketizer::DFAPacketizer.
//
// e.g. terms x resource bit combinations that fit in uint32_t:
// 4 terms x 8 bits = 32 bits
// 3 terms x 10 bits = 30 bits
// 2 terms x 16 bits = 32 bits
//
// e.g. terms x resource bit combinations that fit in uint64_t:
// 8 terms x 8 bits = 64 bits
// 7 terms x 9 bits = 63 bits
// 6 terms x 10 bits = 60 bits
// 5 terms x 12 bits = 60 bits
// 4 terms x 16 bits = 64 bits <--- current
// 3 terms x 21 bits = 63 bits
// 2 terms x 32 bits = 64 bits
//
#define DFA_MAX_RESTERMS 4 // The max # of AND'ed resource terms.
#define DFA_MAX_RESOURCES 16 // The max # of resource bits in one term.
typedef uint64_t DFAInput;
typedef int64_t DFAStateInput;
#define DFA_TBLTYPE "int64_t" // For generating DFAStateInputTable.
// --------------------------------------------------------------------
class DFAPacketizer {
private:
typedef std::pair<unsigned, DFAInput> UnsignPair;
@ -69,9 +96,7 @@ public:
DFAInput getInsnInput(unsigned InsnClass);
// getInsnInput - Return the DFAInput for an instruction class input vector.
static DFAInput getInsnInput(const std::vector<unsigned> &InsnClass) {
return getDFAInsnInput(InsnClass);
}
static DFAInput getInsnInput(const std::vector<unsigned> &InsnClass);
// canReserveResources - Check if the resources occupied by a MCInstrDesc
// are available in the current state.

63
llvm/include/llvm/CodeGen/DFAPacketizerDefs.h
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@ -1,63 +0,0 @@
//=- llvm/CodeGen/DFAPacketizerDefs.h - DFA Packetizer for VLIW ---*- C++ -*-=//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// Common definitions used by TableGen and the DFAPacketizer in CodeGen.
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_DFAPACKETIZERDEFS_H
#define LLVM_CODEGEN_DFAPACKETIZERDEFS_H
#include <vector>
namespace llvm {
// DFA_MAX_RESTERMS * DFA_MAX_RESOURCES must fit within sizeof DFAInput.
// This is verified in DFAPacketizer.cpp:DFAPacketizer::DFAPacketizer.
//
// e.g. terms x resource bit combinations that fit in uint32_t:
// 4 terms x 8 bits = 32 bits
// 3 terms x 10 bits = 30 bits
// 2 terms x 16 bits = 32 bits
//
// e.g. terms x resource bit combinations that fit in uint64_t:
// 8 terms x 8 bits = 64 bits
// 7 terms x 9 bits = 63 bits
// 6 terms x 10 bits = 60 bits
// 5 terms x 12 bits = 60 bits
// 4 terms x 16 bits = 64 bits <--- current
// 3 terms x 21 bits = 63 bits
// 2 terms x 32 bits = 64 bits
//
#define DFA_MAX_RESTERMS 4 // The max # of AND'ed resource terms.
#define DFA_MAX_RESOURCES 16 // The max # of resource bits in one term.
typedef uint64_t DFAInput;
typedef int64_t DFAStateInput;
#define DFA_TBLTYPE "int64_t" // For generating DFAStateInputTable.
namespace {
DFAInput addDFAFuncUnits(DFAInput Inp, unsigned FuncUnits) {
return (Inp << DFA_MAX_RESOURCES) | FuncUnits;
}
/// Return the DFAInput for an instruction class input vector.
/// This function is used in both DFAPacketizer.cpp and in
/// DFAPacketizerEmitter.cpp.
DFAInput getDFAInsnInput(const std::vector<unsigned> &InsnClass) {
DFAInput InsnInput = 0;
assert ((InsnClass.size() <= DFA_MAX_RESTERMS) &&
"Exceeded maximum number of DFA terms");
for (auto U : InsnClass)
InsnInput = addDFAFuncUnits(InsnInput, U);
return InsnInput;
}
}
}
#endif

27
llvm/lib/CodeGen/DFAPacketizer.cpp
View File

@ -31,6 +31,28 @@
#include "llvm/Target/TargetInstrInfo.h"
using namespace llvm;
// --------------------------------------------------------------------
// Definitions shared between DFAPacketizer.cpp and DFAPacketizerEmitter.cpp
namespace {
DFAInput addDFAFuncUnits(DFAInput Inp, unsigned FuncUnits) {
return (Inp << DFA_MAX_RESOURCES) | FuncUnits;
}
/// Return the DFAInput for an instruction class input vector.
/// This function is used in both DFAPacketizer.cpp and in
/// DFAPacketizerEmitter.cpp.
DFAInput getDFAInsnInput(const std::vector<unsigned> &InsnClass) {
DFAInput InsnInput = 0;
assert ((InsnClass.size() <= DFA_MAX_RESTERMS) &&
"Exceeded maximum number of DFA terms");
for (auto U : InsnClass)
InsnInput = addDFAFuncUnits(InsnInput, U);
return InsnInput;
}
}
// --------------------------------------------------------------------
DFAPacketizer::DFAPacketizer(const InstrItineraryData *I,
const DFAStateInput (*SIT)[2],
const unsigned *SET):
@ -82,6 +104,11 @@ DFAInput DFAPacketizer::getInsnInput(unsigned InsnClass) {
return InsnInput;
}
// getInsnInput - Return the DFAInput for an instruction class input vector.
DFAInput DFAPacketizer::getInsnInput(const std::vector<unsigned> &InsnClass) {
return getDFAInsnInput(InsnClass);
}
// canReserveResources - Check if the resources occupied by a MCInstrDesc
// are available in the current state.
bool DFAPacketizer::canReserveResources(const llvm::MCInstrDesc *MID) {

47
llvm/utils/TableGen/DFAPacketizerEmitter.cpp
View File

@ -21,7 +21,6 @@
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/CodeGen/DFAPacketizerDefs.h"
#include "llvm/TableGen/Record.h"
#include "llvm/TableGen/TableGenBackend.h"
#include "llvm/Support/Debug.h"
@ -31,6 +30,52 @@
#include <queue>
using namespace llvm;
// --------------------------------------------------------------------
// Definitions shared between DFAPacketizer.cpp and DFAPacketizerEmitter.cpp
// DFA_MAX_RESTERMS * DFA_MAX_RESOURCES must fit within sizeof DFAInput.
// This is verified in DFAPacketizer.cpp:DFAPacketizer::DFAPacketizer.
//
// e.g. terms x resource bit combinations that fit in uint32_t:
// 4 terms x 8 bits = 32 bits
// 3 terms x 10 bits = 30 bits
// 2 terms x 16 bits = 32 bits
//
// e.g. terms x resource bit combinations that fit in uint64_t:
// 8 terms x 8 bits = 64 bits
// 7 terms x 9 bits = 63 bits
// 6 terms x 10 bits = 60 bits
// 5 terms x 12 bits = 60 bits
// 4 terms x 16 bits = 64 bits <--- current
// 3 terms x 21 bits = 63 bits
// 2 terms x 32 bits = 64 bits
//
#define DFA_MAX_RESTERMS 4 // The max # of AND'ed resource terms.
#define DFA_MAX_RESOURCES 16 // The max # of resource bits in one term.
typedef uint64_t DFAInput;
typedef int64_t DFAStateInput;
#define DFA_TBLTYPE "int64_t" // For generating DFAStateInputTable.
namespace {
DFAInput addDFAFuncUnits(DFAInput Inp, unsigned FuncUnits) {
return (Inp << DFA_MAX_RESOURCES) | FuncUnits;
}
/// Return the DFAInput for an instruction class input vector.
/// This function is used in both DFAPacketizer.cpp and in
/// DFAPacketizerEmitter.cpp.
DFAInput getDFAInsnInput(const std::vector<unsigned> &InsnClass) {
DFAInput InsnInput = 0;
assert ((InsnClass.size() <= DFA_MAX_RESTERMS) &&
"Exceeded maximum number of DFA terms");
for (auto U : InsnClass)
InsnInput = addDFAFuncUnits(InsnInput, U);
return InsnInput;
}
}
// --------------------------------------------------------------------
#ifndef NDEBUG
// To enable debugging, run llvm-tblgen with: "-debug-only dfa-emitter".
//