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nv50/ra: add condenseDef overloads for partial condenses

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Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Karol Herbst
2018-08-05 20:41:49 +02:00
parent a4550de434
commit 8d825f78fc
1 changed files with 21 additions and 8 deletions
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src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp
+21 -8
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@@ -261,6 +261,7 @@ private:
bool insertConstraintMoves();
void condenseDefs(Instruction *);
void condenseDefs(Instruction *, const int first, const int last);
void condenseSrcs(Instruction *, const int first, const int last);
void addHazard(Instruction *i, const ValueRef *src);
@@ -2048,24 +2049,35 @@ RegAlloc::InsertConstraintsPass::addHazard(Instruction *i, const ValueRef *src)
void
RegAlloc::InsertConstraintsPass::condenseDefs(Instruction *insn)
{
uint8_t size = 0;
int n;
for (n = 0; insn->defExists(n) && insn->def(n).getFile() == FILE_GPR; ++n)
size += insn->getDef(n)->reg.size;
if (n < 2)
for (n = 0; insn->defExists(n) && insn->def(n).getFile() == FILE_GPR; ++n);
condenseDefs(insn, 0, n - 1);
}
void
RegAlloc::InsertConstraintsPass::condenseDefs(Instruction *insn,
const int a, const int b)
{
uint8_t size = 0;
if (a >= b)
return;
for (int s = a; s <= b; ++s)
size += insn->getDef(s)->reg.size;
if (!size)
return;
LValue *lval = new_LValue(func, FILE_GPR);
lval->reg.size = size;
Instruction *split = new_Instruction(func, OP_SPLIT, typeOfSize(size));
split->setSrc(0, lval);
for (int d = 0; d < n; ++d) {
split->setDef(d, insn->getDef(d));
for (int d = a; d <= b; ++d) {
split->setDef(d - a, insn->getDef(d));
insn->setDef(d, NULL);
}
insn->setDef(0, lval);
insn->setDef(a, lval);
for (int k = 1, d = n; insn->defExists(d); ++d, ++k) {
for (int k = a + 1, d = b + 1; insn->defExists(d); ++d, ++k) {
insn->setDef(k, insn->getDef(d));
insn->setDef(d, NULL);
}
@@ -2075,6 +2087,7 @@ RegAlloc::InsertConstraintsPass::condenseDefs(Instruction *insn)
insn->bb->insertAfter(insn, split);
constrList.push_back(split);
}
void
RegAlloc::InsertConstraintsPass::condenseSrcs(Instruction *insn,
const int a, const int b)