fzi-peccia commented on code in PR #18182:
URL: https://github.com/apache/tvm/pull/18182#discussion_r2290899187
##########
src/meta_schedule/schedule_rule/schedule_rule.cc:
##########
@@ -304,6 +304,122 @@ Array<ScheduleRule> ScheduleRule::DefaultHexagon() {
};
}
+int GetVLMAX(int vlen, int lmul, int max_sew) { return (lmul * vlen) /
max_sew; }
+
+Array<ScheduleRule> ScheduleRule::DefaultRISCV(int vlen) {
+ Array<ScheduleRule> rules;
+
+ rules.push_back(ScheduleRule::ApplyCustomRule());
+
+ rules.push_back(ScheduleRule::InlineConstantScalars());
+
+ rules.push_back(ScheduleRule::AutoInline(
+ /*into_producer=*/false,
+ /*into_consumer=*/true,
+ /*inline_const_tensor=*/true,
+ /*disallow_if_then_else=*/true,
+ /*require_injective=*/true,
+ /*require_ordered=*/true,
+ /*disallow_op=*/Array<String>{"tir.exp"}));
+
+ rules.push_back(ScheduleRule::AddRFactor(
+ /*max_jobs_per_core=*/16,
+ /*max_innermost_factor=*/Integer(64)));
+
+ int vlmax = 0;
+ int RISCV_MIN_VL = 4;
+ std::vector<std::string> vmul_types = {"multivmul", "vmul", "vmacc"};
+ String intrin_name = "";
+ int j = 1;
+
+ for (const std::string& vmul_type : vmul_types) {
+ if (vmul_type == "multivmul")
+ j = GetVLMAX(vlen, 1, 32);
+ else
+ j = 1;
+
+ // Registering for int16
+ vlmax = GetVLMAX(vlen, 8, 32);
+ while (vlmax >= RISCV_MIN_VL) {
+ intrin_name =
+ "rvv_int16_" + vmul_type + "_" + std::to_string(j) + "_" +
std::to_string(vlmax) + "_m8";
+ rules.push_back(ScheduleRule::MultiLevelTilingWithIntrin(
+ /*intrin_name=*/intrin_name,
+ /*structure=*/"SSRSRS",
+ /*tile_binds=*/std::nullopt,
+ /*max_innermost_factor=*/Integer(vlmax),
+ /*vector_load_lens=*/std::nullopt,
+ /*reuse_read=*/std::nullopt,
+ /*reuse_write=*/
+ Map<String, ffi::Any>{{"req", String("may")},
+ {"levels", Array<Integer>{1, 2}},
+ {"scope", String("global")}}));
+ vlmax /= 2;
+ }
+
+ // Registering for float16
+ vlmax = GetVLMAX(vlen, 8, 16);
Review Comment:
I think the problem is then in tir/tensor_intrin/riscv_cpu.py, because the
max_sew for float16 should be 16.
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