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nak: Rewrite the SM50 encoding of OpF2I

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26114>
This commit is contained in:
Faith Ekstrand 2023-11-09 16:15:26 -06:00 • committed by Marge Bot
parent 426b27ef04
commit 20176035f6
1 changed files with 19 additions and 26 deletions
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45
src/nouveau/compiler/nak/encode_sm50.rs
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@ -1001,39 +1001,32 @@ impl SM50Instr {
}
fn encode_f2i(&mut self, op: &OpF2I) {
assert!(op.src.is_reg_or_zero());
match &op.src.src_ref {
SrcRef::Zero | SrcRef::Reg(_) => {
self.set_opcode(0x5cb0);
self.set_reg_src_ref(20..28, op.src.src_ref);
}
SrcRef::Imm32(i) => {
self.set_opcode(0x38b0);
self.set_src_imm_f20(20..39, 56, *i);
}
SrcRef::CBuf(cb) => {
self.set_opcode(0x4cb0);
self.set_src_cb(20..39, cb);
}
src => panic!("Unsupported src type for F2I: {src}"),
}
let src_modifier = Some(ALUSrcsModifier {
src0_opt: None,
src1_opt: Some(ALUModifierInfo {
abs_bit: Some(49),
neg_bit: Some(45),
}),
src2_opt: None,
});
let encoding_info = ALUEncodingInfo {
opcode: 0xb0,
encoding_type: ALUEncodingType::Variant3,
reg_modifier: src_modifier,
imm24_modifier: src_modifier,
cbuf_modifier: src_modifier,
imm32_behavior_opt: None,
};
self.encode_alu(
encoding_info,
Some(op.dst),
ALUSrc::None,
ALUSrc::from_src(&op.src.into()),
ALUSrc::None,
);
self.set_dst(op.dst);
self.set_field(8..10, (op.dst_type.bits() / 8).ilog2());
self.set_field(10..12, (op.src_type.bits() / 8).ilog2());
self.set_bit(12, op.dst_type.is_signed());
self.set_rnd_mode(39..41, op.rnd_mode);
self.set_field(41..43, 0_u8); /* TODO: subop */
self.set_bit(44, false); /* FTZ */
self.set_bit(45, op.src.src_mod.has_fneg());
self.set_bit(47, false); // .CC
self.set_bit(49, op.src.src_mod.has_fabs());
}
fn set_pred_set_op(&mut self, range: Range<usize>, op: PredSetOp) {