1 files changed, 41 insertions, 0 deletions
diff --git a/riscv/insns/vcompress_vm.h b/riscv/insns/vcompress_vm.h
new file mode 100644
index 0000000..2e0784c
--- /dev/null
+++ b/riscv/insns/vcompress_vm.h
@@ -0,0 +1,41 @@
+// vcompress vd, vs2, vs1
+require(P.VU.vsew >= e8 && P.VU.vsew <= e64);
+require(!P.VU.vill);
+require(P.VU.vstart == 0);
+reg_t sew = P.VU.vsew;
+reg_t vl = P.VU.vl;
+reg_t rd_num = insn.rd();
+reg_t rs1_num = insn.rs1();
+reg_t rs2_num = insn.rs2();
+reg_t pos = 0;
+for (reg_t i = P.VU.vstart ; i < vl; ++i) {
+  const int mlen = P.VU.vmlen;
+  const int midx = (mlen * i) / 64;
+  const int mpos = (mlen * i) % 64;
+
+  bool do_mask = (P.VU.elt<uint64_t>(rs1_num, midx) >> mpos) & 0x1;
+  if (do_mask) {
+    switch (sew) {
+    case e8:
+      P.VU.elt<uint8_t>(rd_num, pos) = P.VU.elt<uint8_t>(rs2_num, i);
+      break;
+    case e16:
+      P.VU.elt<uint16_t>(rd_num, pos) = P.VU.elt<uint16_t>(rs2_num, i);
+      break;
+    case e32:
+      P.VU.elt<uint32_t>(rd_num, pos) = P.VU.elt<uint32_t>(rs2_num, i);
+      break;
+    default:
+      P.VU.elt<uint64_t>(rd_num, pos) = P.VU.elt<uint64_t>(rs2_num, i);
+      break;
+    }
+
+    ++pos;
+  }
+}
+
+if (vl > 0 && TAIL_ZEROING) {
+  uint8_t *tail = &P.VU.elt<uint8_t>(rd_num, pos * ((sew >> 3) * 1));
+  memset(tail, 0, (P.VU.vlmax - pos) * ((sew >> 3) * 1));
+}
+