#if __cplusplus >= 201103L
using std::hash;
using std::unordered_map;
-#elif !defined(ANDROID)
+#else
using std::tr1::hash;
using std::tr1::unordered_map;
-#else
-#error Android release before Lollipop is not supported!
#endif
#define MAX_REGISTER_FILE_SIZE 256
private:
virtual bool visit(BasicBlock *);
+ void insertConstraintMove(Instruction *, int s);
bool insertConstraintMoves();
void condenseDefs(Instruction *);
bool coalesce(ArrayList&);
bool doCoalesce(ArrayList&, unsigned int mask);
void calculateSpillWeights();
- void simplify();
+ bool simplify();
bool selectRegisters();
void cleanup(const bool success);
case 0x100:
case 0x110:
case 0x120:
+ case 0x130:
ret = doCoalesce(insns, JOIN_MASK_UNION);
break;
default:
(node->degree < node->degreeLimit) ? "" : "(spill)");
}
-void
+bool
GCRA::simplify()
{
for (;;) {
}
if (isinf(bestScore)) {
ERROR("no viable spill candidates left\n");
- break;
+ return false;
}
simplifyNode(best);
} else {
- break;
+ return true;
}
}
}
nodes[i].init(regs, lval);
RIG.insert(&nodes[i]);
- if (lval->inFile(FILE_GPR) && lval->getInsn() != NULL &&
- prog->getTarget()->getChipset() < 0xc0) {
+ if (lval->inFile(FILE_GPR) && lval->getInsn() != NULL) {
Instruction *insn = lval->getInsn();
- if (insn->op == OP_MAD || insn->op == OP_SAD)
- // Short encoding only possible if they're all GPRs, no need to
- // affect them otherwise.
- if (insn->flagsDef < 0 &&
- insn->src(0).getFile() == FILE_GPR &&
- insn->src(1).getFile() == FILE_GPR &&
- insn->src(2).getFile() == FILE_GPR)
- nodes[i].addRegPreference(getNode(insn->getSrc(2)->asLValue()));
+ if (insn->op != OP_MAD && insn->op != OP_FMA && insn->op != OP_SAD)
+ continue;
+ // For both of the cases below, we only want to add the preference
+ // if all arguments are in registers.
+ if (insn->src(0).getFile() != FILE_GPR ||
+ insn->src(1).getFile() != FILE_GPR ||
+ insn->src(2).getFile() != FILE_GPR)
+ continue;
+ if (prog->getTarget()->getChipset() < 0xc0) {
+ // Outputting a flag is not supported with short encodings nor
+ // with immediate arguments.
+ // See handleMADforNV50.
+ if (insn->flagsDef >= 0)
+ continue;
+ } else {
+ // We can only fold immediate arguments if dst == src2. This
+ // only matters if one of the first two arguments is an
+ // immediate. This form is also only supported for floats.
+ // See handleMADforNVC0.
+ ImmediateValue imm;
+ if (insn->dType != TYPE_F32)
+ continue;
+ if (!insn->src(0).getImmediate(imm) &&
+ !insn->src(1).getImmediate(imm))
+ continue;
+ }
+
+ nodes[i].addRegPreference(getNode(insn->getSrc(2)->asLValue()));
}
}
}
buildRIG(insns);
calculateSpillWeights();
- simplify();
+ ret = simplify();
+ if (!ret)
+ goto out;
ret = selectRegisters();
if (!ret) {
// their registers should be identical.
if (v->getInsn()->op == OP_PHI || v->getInsn()->op == OP_UNION) {
Instruction *phi = v->getInsn();
- for (int phis = 0; phi->srcExists(phis); ++phis)
+ for (int phis = 0; phi->srcExists(phis); ++phis) {
phi->getSrc(phis)->join = v;
+ phi->getSrc(phis)->reg.data.id = v->reg.data.id;
+ }
}
reg += v->reg.size;
}
textureMask(tex);
condenseDefs(tex);
- if (tex->op == OP_SUSTB || tex->op == OP_SUSTP) {
- condenseSrcs(tex, 3, (3 + typeSizeof(tex->dType) / 4) - 1);
+ if (isSurfaceOp(tex->op)) {
+ int s = tex->tex.target.getDim() +
+ (tex->tex.target.isArray() || tex->tex.target.isCube());
+ int n = 0;
+
+ switch (tex->op) {
+ case OP_SUSTB:
+ case OP_SUSTP:
+ n = 4;
+ break;
+ case OP_SUREDB:
+ case OP_SUREDP:
+ if (tex->subOp == NV50_IR_SUBOP_ATOM_CAS)
+ n = 2;
+ break;
+ default:
+ break;
+ }
+
+ if (s > 1)
+ condenseSrcs(tex, 0, s - 1);
+ if (n > 1)
+ condenseSrcs(tex, 1, n); // do not condense the tex handle
} else
if (isTextureOp(tex->op)) {
if (tex->op != OP_TXQ) {
for (c = 0; tex->srcExists(c) || tex->defExists(c); ++c) {
if (!tex->srcExists(c))
tex->setSrc(c, new_LValue(func, tex->getSrc(0)->asLValue()));
+ else
+ insertConstraintMove(tex, c);
if (!tex->defExists(c))
tex->setDef(c, new_LValue(func, tex->getDef(0)->asLValue()));
}
break;
case 0x110:
case 0x120:
+ case 0x130:
texConstraintGM107(tex);
break;
default:
return true;
}
+void
+RegAlloc::InsertConstraintsPass::insertConstraintMove(Instruction *cst, int s)
+{
+ const uint8_t size = cst->src(s).getSize();
+
+ assert(cst->getSrc(s)->defs.size() == 1); // still SSA
+
+ Instruction *defi = cst->getSrc(s)->defs.front()->getInsn();
+ bool imm = defi->op == OP_MOV &&
+ defi->src(0).getFile() == FILE_IMMEDIATE;
+ bool load = defi->op == OP_LOAD &&
+ defi->src(0).getFile() == FILE_MEMORY_CONST &&
+ !defi->src(0).isIndirect(0);
+ // catch some cases where don't really need MOVs
+ if (cst->getSrc(s)->refCount() == 1 && !defi->constrainedDefs()) {
+ if (imm || load) {
+ // Move the defi right before the cst. No point in expanding
+ // the range.
+ defi->bb->remove(defi);
+ cst->bb->insertBefore(cst, defi);
+ }
+ return;
+ }
+
+ LValue *lval = new_LValue(func, cst->src(s).getFile());
+ lval->reg.size = size;
+
+ Instruction *mov = new_Instruction(func, OP_MOV, typeOfSize(size));
+ mov->setDef(0, lval);
+ mov->setSrc(0, cst->getSrc(s));
+
+ if (load) {
+ mov->op = OP_LOAD;
+ mov->setSrc(0, defi->getSrc(0));
+ } else if (imm) {
+ mov->setSrc(0, defi->getSrc(0));
+ }
+
+ if (defi->getPredicate())
+ mov->setPredicate(defi->cc, defi->getPredicate());
+
+ cst->setSrc(s, mov->getDef(0));
+ cst->bb->insertBefore(cst, mov);
+
+ cst->getDef(0)->asLValue()->noSpill = 1; // doesn't help
+}
+
// Insert extra moves so that, if multiple register constraints on a value are
// in conflict, these conflicts can be resolved.
bool
cst->bb->insertBefore(cst, mov);
continue;
}
- assert(cst->getSrc(s)->defs.size() == 1); // still SSA
-
- Instruction *defi = cst->getSrc(s)->defs.front()->getInsn();
- // catch some cases where don't really need MOVs
- if (cst->getSrc(s)->refCount() == 1 && !defi->constrainedDefs())
- continue;
-
- LValue *lval = new_LValue(func, cst->src(s).getFile());
- lval->reg.size = size;
-
- mov = new_Instruction(func, OP_MOV, typeOfSize(size));
- mov->setDef(0, lval);
- mov->setSrc(0, cst->getSrc(s));
- cst->setSrc(s, mov->getDef(0));
- cst->bb->insertBefore(cst, mov);
-
- cst->getDef(0)->asLValue()->noSpill = 1; // doesn't help
- if (cst->op == OP_UNION)
- mov->setPredicate(defi->cc, defi->getPredicate());
+ insertConstraintMove(cst, s);
}
}
}
projects / mesa.git / blobdiff