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nak: Rework the SM50 encoding of isetp

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Drop the ALU stuff and hand-encode it.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26114>
This commit is contained in:
Faith Ekstrand 2023-11-09 12:04:58 -06:00 • committed by Marge Bot
parent e404877a02
commit bbd2de34c5
1 changed files with 24 additions and 27 deletions
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51
src/nouveau/compiler/nak/encode_sm50.rs
View file

@ -1067,29 +1067,32 @@ impl SM50Instr {
}
fn encode_isetp(&mut self, op: &OpISetP) {
let src_modifier = Some(ALUSrcsModifier {
src0_opt: None,
src1_opt: None,
src2_opt: None,
});
let encoding_info = ALUEncodingInfo {
opcode: 0x60,
encoding_type: ALUEncodingType::Variant3,
reg_modifier: src_modifier,
imm24_modifier: src_modifier,
cbuf_modifier: src_modifier,
imm32_behavior_opt: None,
};
assert!(op.srcs[0].src_mod.is_none());
assert!(op.srcs[1].src_mod.is_none());
self.encode_alu(
encoding_info,
None,
ALUSrc::from_src(&op.srcs[0].into()),
ALUSrc::from_src(&op.srcs[1].into()),
ALUSrc::None,
);
match &op.srcs[1].src_ref {
SrcRef::Zero | SrcRef::Reg(_) => {
self.set_opcode(0x5b60);
self.set_reg_src(20..28, op.srcs[1]);
}
SrcRef::Imm32(i) => {
self.set_opcode(0x3660);
self.set_src_imm_i20(20..39, 56, *i);
}
SrcRef::CBuf(cb) => {
self.set_opcode(0x4b60);
self.set_src_cb(20..39, cb);
}
_ => panic!("Unsupported src type"),
}
self.set_pred_src(16..19, 19, SrcRef::True.into());
self.set_pred_dst(0..3, Dst::None); /* dst1 */
self.set_pred_dst(3..6, op.dst);
self.set_reg_src(8..16, op.srcs[0]);
self.set_pred_src(39..42, 42, op.accum);
self.set_bit(43, false); /* .X */
self.set_pred_set_op(45..47, op.set_op);
self.set_field(
48..49,
@ -1098,13 +1101,7 @@ impl SM50Instr {
IntCmpType::I32 => 1_u32,
},
);
self.set_pred_set_op(45..47, op.set_op);
self.set_int_cmp_op(49..52, op.cmp_op);
self.set_pred_dst(3..6, op.dst);
self.set_pred_dst(0..3, Dst::None); /* dst1 */
self.set_pred_src(39..42, 42, op.accum);
}
fn encode_sust(&mut self, op: &OpSuSt) {