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nouveau/mme: Better handle the too many immedaties case on Turing+

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30703>
This commit is contained in:
Faith Ekstrand 2024-08-14 12:56:01 -05:00 • committed by Marge Bot
parent 381be88473
commit f5507fb69b
1 changed files with 23 additions and 10 deletions
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33
src/nouveau/mme/mme_tu104_builder.c
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@ -244,16 +244,29 @@ build_alu_to(struct mme_builder *b,
enum mme_tu104_reg x_reg = mme_value_alu_reg(x);
enum mme_tu104_reg y_reg = mme_value_alu_reg(y);
if (x_reg == MME_TU104_REG_IMM32 && y_reg == MME_TU104_REG_IMM32) {
y = mme_mov(b, y);
y_reg = mme_value_alu_reg(y);
}
if (mme_tu104_alu_op_has_implicit_imm(op) &&
(x_reg == MME_TU104_REG_IMM32 ||
(x_reg == MME_TU104_REG_IMM && y_reg == MME_TU104_REG_IMM))) {
x = mme_mov(b, x);
x_reg = mme_value_alu_reg(x);
unsigned num_imms = mme_tu104_alu_op_has_implicit_imm(op) +
mme_tu104_reg_num_imms(x_reg) +
mme_tu104_reg_num_imms(y_reg);
while (num_imms > 2) {
if (y_reg == MME_TU104_REG_IMM32) {
y = mme_mov(b, y);
y_reg = mme_value_alu_reg(y);
num_imms -= 2;
} else if (x_reg == MME_TU104_REG_IMM32) {
x = mme_mov(b, x);
x_reg = mme_value_alu_reg(x);
num_imms -= 2;
} else if (mme_tu104_reg_num_imms(y_reg) > 0) {
assert(mme_tu104_reg_num_imms(y_reg) == 1);
y = mme_mov(b, y);
y_reg = mme_value_alu_reg(y);
num_imms--;
} else if (mme_tu104_reg_num_imms(x_reg) > 0) {
assert(mme_tu104_reg_num_imms(x_reg) == 1);
x = mme_mov(b, x);
x_reg = mme_value_alu_reg(x);
num_imms--;
}
}
uint16_t imm0 = 0, imm1 = 0;