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Use uint16_t to store opcodes in static tables in X86 backend.

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llvm-svn: 152391
This commit is contained in:
Craig Topper 2012-03-09 07:45:21 +00:00
parent cc93a16f47
commit 3dee24b8c3
3 changed files with 30 additions and 24 deletions
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4
lib/Target/X86/X86FloatingPoint.cpp
View File

@ -570,8 +570,8 @@ void FPS::finishBlockStack() {
namespace {
struct TableEntry {
unsigned from;
unsigned to;
uint16_t from;
uint16_t to;
bool operator<(const TableEntry &TE) const { return from < TE.from; }
friend bool operator<(const TableEntry &TE, unsigned V) {
return TE.from < V;

2
lib/Target/X86/X86ISelDAGToDAG.cpp
View File

@ -1654,7 +1654,7 @@ enum AtomicSz {
AtomicSzEnd
};
static const unsigned int AtomicOpcTbl[AtomicOpcEnd][AtomicSzEnd] = {
static const uint16_t AtomicOpcTbl[AtomicOpcEnd][AtomicSzEnd] = {
{
X86::LOCK_OR8mi,
X86::LOCK_OR8mr,

48
lib/Target/X86/X86InstrInfo.cpp
View File

@ -82,6 +82,12 @@ enum {
TB_FOLDED_STORE = 1 << 19
};
struct X86OpTblEntry {
uint16_t RegOp;
uint16_t MemOp;
uint32_t Flags;
};
X86InstrInfo::X86InstrInfo(X86TargetMachine &tm)
: X86GenInstrInfo((tm.getSubtarget<X86Subtarget>().is64Bit()
? X86::ADJCALLSTACKDOWN64
@ -91,7 +97,7 @@ X86InstrInfo::X86InstrInfo(X86TargetMachine &tm)
: X86::ADJCALLSTACKUP32)),
TM(tm), RI(tm, *this) {
static const unsigned OpTbl2Addr[][3] = {
static const X86OpTblEntry OpTbl2Addr[] = {
{ X86::ADC32ri, X86::ADC32mi, 0 },
{ X86::ADC32ri8, X86::ADC32mi8, 0 },
{ X86::ADC32rr, X86::ADC32mr, 0 },
@ -259,16 +265,16 @@ X86InstrInfo::X86InstrInfo(X86TargetMachine &tm)
};
for (unsigned i = 0, e = array_lengthof(OpTbl2Addr); i != e; ++i) {
unsigned RegOp = OpTbl2Addr[i][0];
unsigned MemOp = OpTbl2Addr[i][1];
unsigned Flags = OpTbl2Addr[i][2];
unsigned RegOp = OpTbl2Addr[i].RegOp;
unsigned MemOp = OpTbl2Addr[i].MemOp;
unsigned Flags = OpTbl2Addr[i].Flags;
AddTableEntry(RegOp2MemOpTable2Addr, MemOp2RegOpTable,
RegOp, MemOp,
// Index 0, folded load and store, no alignment requirement.
Flags | TB_INDEX_0 | TB_FOLDED_LOAD | TB_FOLDED_STORE);
}
static const unsigned OpTbl0[][3] = {
static const X86OpTblEntry OpTbl0[] = {
{ X86::BT16ri8, X86::BT16mi8, TB_FOLDED_LOAD },
{ X86::BT32ri8, X86::BT32mi8, TB_FOLDED_LOAD },
{ X86::BT64ri8, X86::BT64mi8, TB_FOLDED_LOAD },
@ -370,14 +376,14 @@ X86InstrInfo::X86InstrInfo(X86TargetMachine &tm)
};
for (unsigned i = 0, e = array_lengthof(OpTbl0); i != e; ++i) {
unsigned RegOp = OpTbl0[i][0];
unsigned MemOp = OpTbl0[i][1];
unsigned Flags = OpTbl0[i][2];
unsigned RegOp = OpTbl0[i].RegOp;
unsigned MemOp = OpTbl0[i].MemOp;
unsigned Flags = OpTbl0[i].Flags;
AddTableEntry(RegOp2MemOpTable0, MemOp2RegOpTable,
RegOp, MemOp, TB_INDEX_0 | Flags);
}
static const unsigned OpTbl1[][3] = {
static const X86OpTblEntry OpTbl1[] = {
{ X86::CMP16rr, X86::CMP16rm, 0 },
{ X86::CMP32rr, X86::CMP32rm, 0 },
{ X86::CMP64rr, X86::CMP64rm, 0 },
@ -555,16 +561,16 @@ X86InstrInfo::X86InstrInfo(X86TargetMachine &tm)
};
for (unsigned i = 0, e = array_lengthof(OpTbl1); i != e; ++i) {
unsigned RegOp = OpTbl1[i][0];
unsigned MemOp = OpTbl1[i][1];
unsigned Flags = OpTbl1[i][2];
unsigned RegOp = OpTbl1[i].RegOp;
unsigned MemOp = OpTbl1[i].MemOp;
unsigned Flags = OpTbl1[i].Flags;
AddTableEntry(RegOp2MemOpTable1, MemOp2RegOpTable,
RegOp, MemOp,
// Index 1, folded load
Flags | TB_INDEX_1 | TB_FOLDED_LOAD);
}
static const unsigned OpTbl2[][3] = {
static const X86OpTblEntry OpTbl2[] = {
{ X86::ADC32rr, X86::ADC32rm, 0 },
{ X86::ADC64rr, X86::ADC64rm, 0 },
{ X86::ADD16rr, X86::ADD16rm, 0 },
@ -1108,9 +1114,9 @@ X86InstrInfo::X86InstrInfo(X86TargetMachine &tm)
};
for (unsigned i = 0, e = array_lengthof(OpTbl2); i != e; ++i) {
unsigned RegOp = OpTbl2[i][0];
unsigned MemOp = OpTbl2[i][1];
unsigned Flags = OpTbl2[i][2];
unsigned RegOp = OpTbl2[i].RegOp;
unsigned MemOp = OpTbl2[i].MemOp;
unsigned Flags = OpTbl2[i].Flags;
AddTableEntry(RegOp2MemOpTable2, MemOp2RegOpTable,
RegOp, MemOp,
// Index 2, folded load
@ -3627,7 +3633,7 @@ unsigned X86InstrInfo::getGlobalBaseReg(MachineFunction *MF) const {
// These are the replaceable SSE instructions. Some of these have Int variants
// that we don't include here. We don't want to replace instructions selected
// by intrinsics.
static const unsigned ReplaceableInstrs[][3] = {
static const uint16_t ReplaceableInstrs[][3] = {
//PackedSingle PackedDouble PackedInt
{ X86::MOVAPSmr, X86::MOVAPDmr, X86::MOVDQAmr },
{ X86::MOVAPSrm, X86::MOVAPDrm, X86::MOVDQArm },
@ -3667,7 +3673,7 @@ static const unsigned ReplaceableInstrs[][3] = {
{ X86::VMOVNTPSYmr, X86::VMOVNTPDYmr, X86::VMOVNTDQYmr }
};
static const unsigned ReplaceableInstrsAVX2[][3] = {
static const uint16_t ReplaceableInstrsAVX2[][3] = {
//PackedSingle PackedDouble PackedInt
{ X86::VANDNPSYrm, X86::VANDNPDYrm, X86::VPANDNYrm },
{ X86::VANDNPSYrr, X86::VANDNPDYrr, X86::VPANDNYrr },
@ -3688,14 +3694,14 @@ static const unsigned ReplaceableInstrsAVX2[][3] = {
// FIXME: Some shuffle and unpack instructions have equivalents in different
// domains, but they require a bit more work than just switching opcodes.
static const unsigned *lookup(unsigned opcode, unsigned domain) {
static const uint16_t *lookup(unsigned opcode, unsigned domain) {
for (unsigned i = 0, e = array_lengthof(ReplaceableInstrs); i != e; ++i)
if (ReplaceableInstrs[i][domain-1] == opcode)
return ReplaceableInstrs[i];
return 0;
}
static const unsigned *lookupAVX2(unsigned opcode, unsigned domain) {
static const uint16_t *lookupAVX2(unsigned opcode, unsigned domain) {
for (unsigned i = 0, e = array_lengthof(ReplaceableInstrsAVX2); i != e; ++i)
if (ReplaceableInstrsAVX2[i][domain-1] == opcode)
return ReplaceableInstrsAVX2[i];
@ -3718,7 +3724,7 @@ void X86InstrInfo::setExecutionDomain(MachineInstr *MI, unsigned Domain) const {
assert(Domain>0 && Domain<4 && "Invalid execution domain");
uint16_t dom = (MI->getDesc().TSFlags >> X86II::SSEDomainShift) & 3;
assert(dom && "Not an SSE instruction");
const unsigned *table = lookup(MI->getOpcode(), dom);
const uint16_t *table = lookup(MI->getOpcode(), dom);
if (!table) { // try the other table
assert((TM.getSubtarget<X86Subtarget>().hasAVX2() || Domain < 3) &&
"256-bit vector operations only available in AVX2");