#include "llvm/Support/raw_ostream.h"
using namespace llvm;
+//===----------------------------------------------------------------------===//
+// PowerPC Scoreboard Hazard Recognizer
+void PPCScoreboardHazardRecognizer::EmitInstruction(SUnit *SU) {
+ const MCInstrDesc *MCID = DAG->getInstrDesc(SU);
+ if (!MCID)
+ // This is a PPC pseudo-instruction.
+ return;
+
+ ScoreboardHazardRecognizer::EmitInstruction(SU);
+}
+
+ScheduleHazardRecognizer::HazardType
+PPCScoreboardHazardRecognizer::getHazardType(SUnit *SU, int Stalls) {
+ return ScoreboardHazardRecognizer::getHazardType(SU, Stalls);
+}
+
+void PPCScoreboardHazardRecognizer::AdvanceCycle() {
+ ScoreboardHazardRecognizer::AdvanceCycle();
+}
+
+void PPCScoreboardHazardRecognizer::Reset() {
+ ScoreboardHazardRecognizer::Reset();
+}
+
//===----------------------------------------------------------------------===//
// PowerPC 970 Hazard Recognizer
//
bool &isFirst, bool &isSingle,
bool &isCracked,
bool &isLoad, bool &isStore) {
- if ((int)Opcode >= 0) {
- isFirst = isSingle = isCracked = isLoad = isStore = false;
- return PPCII::PPC970_Pseudo;
- }
- Opcode = ~Opcode;
-
- const TargetInstrDesc &TID = TII.get(Opcode);
+ const MCInstrDesc &MCID = TII.get(Opcode);
- isLoad = TID.mayLoad();
- isStore = TID.mayStore();
+ isLoad = MCID.mayLoad();
+ isStore = MCID.mayStore();
- uint64_t TSFlags = TID.TSFlags;
+ uint64_t TSFlags = MCID.TSFlags;
isFirst = TSFlags & PPCII::PPC970_First;
isSingle = TSFlags & PPCII::PPC970_Single;
/// isLoadOfStoredAddress - If we have a load from the previously stored pointer
/// as indicated by StorePtr1/StorePtr2/StoreSize, return true.
bool PPCHazardRecognizer970::
-isLoadOfStoredAddress(unsigned LoadSize, SDValue Ptr1, SDValue Ptr2) const {
+isLoadOfStoredAddress(uint64_t LoadSize, int64_t LoadOffset,
+ const Value *LoadValue) const {
for (unsigned i = 0, e = NumStores; i != e; ++i) {
// Handle exact and commuted addresses.
- if (Ptr1 == StorePtr1[i] && Ptr2 == StorePtr2[i])
- return true;
- if (Ptr2 == StorePtr1[i] && Ptr1 == StorePtr2[i])
+ if (LoadValue == StoreValue[i] && LoadOffset == StoreOffset[i])
return true;
// Okay, we don't have an exact match, if this is an indexed offset, see if
// we have overlap (which happens during fp->int conversion for example).
- if (StorePtr2[i] == Ptr2) {
- if (ConstantSDNode *StoreOffset = dyn_cast<ConstantSDNode>(StorePtr1[i]))
- if (ConstantSDNode *LoadOffset = dyn_cast<ConstantSDNode>(Ptr1)) {
- // Okay the base pointers match, so we have [c1+r] vs [c2+r]. Check
- // to see if the load and store actually overlap.
- int StoreOffs = StoreOffset->getZExtValue();
- int LoadOffs = LoadOffset->getZExtValue();
- if (StoreOffs < LoadOffs) {
- if (int(StoreOffs+StoreSize[i]) > LoadOffs) return true;
- } else {
- if (int(LoadOffs+LoadSize) > StoreOffs) return true;
- }
- }
+ if (StoreValue[i] == LoadValue) {
+ // Okay the base pointers match, so we have [c1+r] vs [c2+r]. Check
+ // to see if the load and store actually overlap.
+ if (StoreOffset[i] < LoadOffset) {
+ if (int64_t(StoreOffset[i]+StoreSize[i]) > LoadOffset) return true;
+ } else {
+ if (int64_t(LoadOffset+LoadSize) > StoreOffset[i]) return true;
+ }
}
}
return false;
getHazardType(SUnit *SU, int Stalls) {
assert(Stalls == 0 && "PPC hazards don't support scoreboard lookahead");
- const SDNode *Node = SU->getNode()->getGluedMachineNode();
+ MachineInstr *MI = SU->getInstr();
+
+ if (MI->isDebugValue())
+ return NoHazard;
+
+ unsigned Opcode = MI->getOpcode();
bool isFirst, isSingle, isCracked, isLoad, isStore;
PPCII::PPC970_Unit InstrType =
- GetInstrType(Node->getOpcode(), isFirst, isSingle, isCracked,
+ GetInstrType(Opcode, isFirst, isSingle, isCracked,
isLoad, isStore);
if (InstrType == PPCII::PPC970_Pseudo) return NoHazard;
- unsigned Opcode = Node->getMachineOpcode();
// We can only issue a PPC970_First/PPC970_Single instruction (such as
// crand/mtspr/etc) if this is the first cycle of the dispatch group.
// If this is a load following a store, make sure it's not to the same or
// overlapping address.
- if (isLoad && NumStores) {
- unsigned LoadSize;
- switch (Opcode) {
- default: llvm_unreachable("Unknown load!");
- case PPC::LBZ: case PPC::LBZU:
- case PPC::LBZX:
- case PPC::LBZ8: case PPC::LBZU8:
- case PPC::LBZX8:
- case PPC::LVEBX:
- LoadSize = 1;
- break;
- case PPC::LHA: case PPC::LHAU:
- case PPC::LHAX:
- case PPC::LHZ: case PPC::LHZU:
- case PPC::LHZX:
- case PPC::LVEHX:
- case PPC::LHBRX:
- case PPC::LHA8: case PPC::LHAU8:
- case PPC::LHAX8:
- case PPC::LHZ8: case PPC::LHZU8:
- case PPC::LHZX8:
- LoadSize = 2;
- break;
- case PPC::LFS: case PPC::LFSU:
- case PPC::LFSX:
- case PPC::LWZ: case PPC::LWZU:
- case PPC::LWZX:
- case PPC::LWA:
- case PPC::LWAX:
- case PPC::LVEWX:
- case PPC::LWBRX:
- case PPC::LWZ8:
- case PPC::LWZX8:
- LoadSize = 4;
- break;
- case PPC::LFD: case PPC::LFDU:
- case PPC::LFDX:
- case PPC::LD: case PPC::LDU:
- case PPC::LDX:
- LoadSize = 8;
- break;
- case PPC::LVX:
- case PPC::LVXL:
- LoadSize = 16;
- break;
- }
-
- if (isLoadOfStoredAddress(LoadSize,
- Node->getOperand(0), Node->getOperand(1)))
+ if (isLoad && NumStores && !MI->memoperands_empty()) {
+ MachineMemOperand *MO = *MI->memoperands_begin();
+ if (isLoadOfStoredAddress(MO->getSize(),
+ MO->getOffset(), MO->getValue()))
return NoopHazard;
}
}
void PPCHazardRecognizer970::EmitInstruction(SUnit *SU) {
- const SDNode *Node = SU->getNode()->getGluedMachineNode();
+ MachineInstr *MI = SU->getInstr();
+
+ if (MI->isDebugValue())
+ return;
+
+ unsigned Opcode = MI->getOpcode();
bool isFirst, isSingle, isCracked, isLoad, isStore;
PPCII::PPC970_Unit InstrType =
- GetInstrType(Node->getOpcode(), isFirst, isSingle, isCracked,
+ GetInstrType(Opcode, isFirst, isSingle, isCracked,
isLoad, isStore);
if (InstrType == PPCII::PPC970_Pseudo) return;
- unsigned Opcode = Node->getMachineOpcode();
// Update structural hazard information.
- if (Opcode == PPC::MTCTR) HasCTRSet = true;
+ if (Opcode == PPC::MTCTR || Opcode == PPC::MTCTR8) HasCTRSet = true;
// Track the address stored to.
- if (isStore) {
- unsigned ThisStoreSize;
- switch (Opcode) {
- default: llvm_unreachable("Unknown store instruction!");
- case PPC::STB: case PPC::STB8:
- case PPC::STBU: case PPC::STBU8:
- case PPC::STBX: case PPC::STBX8:
- case PPC::STVEBX:
- ThisStoreSize = 1;
- break;
- case PPC::STH: case PPC::STH8:
- case PPC::STHU: case PPC::STHU8:
- case PPC::STHX: case PPC::STHX8:
- case PPC::STVEHX:
- case PPC::STHBRX:
- ThisStoreSize = 2;
- break;
- case PPC::STFS:
- case PPC::STFSU:
- case PPC::STFSX:
- case PPC::STWX: case PPC::STWX8:
- case PPC::STWUX:
- case PPC::STW: case PPC::STW8:
- case PPC::STWU:
- case PPC::STVEWX:
- case PPC::STFIWX:
- case PPC::STWBRX:
- ThisStoreSize = 4;
- break;
- case PPC::STD_32:
- case PPC::STDX_32:
- case PPC::STD:
- case PPC::STDU:
- case PPC::STFD:
- case PPC::STFDX:
- case PPC::STDX:
- case PPC::STDUX:
- ThisStoreSize = 8;
- break;
- case PPC::STVX:
- case PPC::STVXL:
- ThisStoreSize = 16;
- break;
- }
-
- StoreSize[NumStores] = ThisStoreSize;
- StorePtr1[NumStores] = Node->getOperand(1);
- StorePtr2[NumStores] = Node->getOperand(2);
+ if (isStore && NumStores < 4 && !MI->memoperands_empty()) {
+ MachineMemOperand *MO = *MI->memoperands_begin();
+ StoreSize[NumStores] = MO->getSize();
+ StoreOffset[NumStores] = MO->getOffset();
+ StoreValue[NumStores] = MO->getValue();
++NumStores;
}
if (NumIssued == 5)
EndDispatchGroup();
}
+
+void PPCHazardRecognizer970::Reset() {
+ EndDispatchGroup();
+}
+
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