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nv50/ir: also do PostRaLoadPropagation for FMA

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Helps Feral-ported games, due to their use of fma()

shader-db changes:
total instructions in shared programs : 3934925 -> 3934327 (-0.02%)
total gprs used in shared programs    : 481563 -> 481563 (0.00%)
total local used in shared programs   : 27469 -> 27469 (0.00%)
total bytes used in shared programs   : 36061888 -> 36056504 (-0.01%)

                local        gpr       inst      bytes
    helped           0           0         228         228
      hurt           0           0           0           0

Signed-off-by: Karol Herbst <karolherbst@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Karol Herbst 2017-03-26 21:46:01 +02:00 • committed by Ilia Mirkin
parent 7d007824a3
commit baaae8cb81
2 changed files with 2 additions and 1 deletions
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1
src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
View file

@ -3307,6 +3307,7 @@ bool
PostRaLoadPropagation::visit(Instruction *i)
{
switch (i->op) {
case OP_FMA:
case OP_MAD:
if (prog->getTarget()->getChipset() < 0xc0)
handleMADforNV50(i);

2
src/gallium/drivers/nouveau/codegen/nv50_ir_ra.cpp
View file

@ -1471,7 +1471,7 @@ GCRA::allocateRegisters(ArrayList& insns)
if (lval->inFile(FILE_GPR) && lval->getInsn() != NULL &&
prog->getTarget()->getChipset() < 0xc0) {
Instruction *insn = lval->getInsn();
if (insn->op == OP_MAD || insn->op == OP_SAD)
if (insn->op == OP_MAD || insn->op == OP_FMA || insn->op == OP_SAD)
// Short encoding only possible if they're all GPRs, no need to
// affect them otherwise.
if (insn->flagsDef < 0 &&