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R600: Turn TEX/VTX into native instructions

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180756 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vincent Lejeune
2013-04-30 00:13:53 +00:00
parent 631591e6f3
commit b6379de427
3 changed files with 51 additions and 16 deletions
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41
lib/Target/R600/R600ControlFlowFinalizer.cpp
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@ -30,6 +30,8 @@ namespace llvm {
class R600ControlFlowFinalizer : public MachineFunctionPass {
private:
typedef std::pair<MachineInstr *, std::vector<MachineInstr *> > ClauseFile;
enum ControlFlowInstruction {
CF_TC,
CF_VC,
@ -105,28 +107,44 @@ private:
return TII->get(Opcode);
}
MachineBasicBlock::iterator
MakeFetchClause(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
unsigned CfAddress) const {
ClauseFile
MakeFetchClause(MachineBasicBlock &MBB, MachineBasicBlock::iterator &I)
const {
MachineBasicBlock::iterator ClauseHead = I;
std::vector<MachineInstr *> ClauseContent;
unsigned AluInstCount = 0;
bool IsTex = TII->usesTextureCache(ClauseHead);
for (MachineBasicBlock::iterator E = MBB.end(); I != E; ++I) {
if (IsTrivialInst(I))
continue;
if (AluInstCount > MaxFetchInst)
break;
if ((IsTex && !TII->usesTextureCache(I)) ||
(!IsTex && !TII->usesVertexCache(I)))
break;
AluInstCount ++;
if (AluInstCount > MaxFetchInst)
break;
ClauseContent.push_back(I);
}
BuildMI(MBB, ClauseHead, MBB.findDebugLoc(ClauseHead),
MachineInstr *MIb = BuildMI(MBB, ClauseHead, MBB.findDebugLoc(ClauseHead),
getHWInstrDesc(IsTex?CF_TC:CF_VC))
.addImm(CfAddress) // ADDR
.addImm(AluInstCount); // COUNT
return I;
.addImm(0) // ADDR
.addImm(AluInstCount - 1); // COUNT
return ClauseFile(MIb, ClauseContent);
}
void
EmitFetchClause(MachineBasicBlock::iterator InsertPos, ClauseFile &Clause,
unsigned &CfCount) {
CounterPropagateAddr(Clause.first, CfCount);
MachineBasicBlock *BB = Clause.first->getParent();
BuildMI(BB, InsertPos->getDebugLoc(), TII->get(AMDGPU::FETCH_CLAUSE))
.addImm(CfCount);
for (unsigned i = 0, e = Clause.second.size(); i < e; ++i) {
BB->splice(InsertPos, BB, Clause.second[i]);
}
CfCount += 2 * Clause.second.size();
}
void CounterPropagateAddr(MachineInstr *MI, unsigned Addr) const {
MI->getOperand(0).setImm(Addr + MI->getOperand(0).getImm());
}
@ -182,11 +200,12 @@ public:
getHWInstrDesc(CF_CALL_FS));
CfCount++;
}
std::vector<ClauseFile> FetchClauses;
for (MachineBasicBlock::iterator I = MBB.begin(), E = MBB.end();
I != E;) {
if (TII->usesTextureCache(I) || TII->usesVertexCache(I)) {
DEBUG(dbgs() << CfCount << ":"; I->dump(););
I = MakeFetchClause(MBB, I, 0);
FetchClauses.push_back(MakeFetchClause(MBB, I));
CfCount++;
continue;
}
@ -307,6 +326,8 @@ public:
BuildMI(MBB, I, MBB.findDebugLoc(MI), TII->get(AMDGPU::PAD));
CfCount++;
}
for (unsigned i = 0, e = FetchClauses.size(); i < e; i++)
EmitFetchClause(I, FetchClauses[i], CfCount);
}
default:
break;