1 files changed, 6 insertions, 0 deletions
diff --git a/riscv/insns/cpopw.h b/riscv/insns/cpopw.h
new file mode 100644
index 0000000..13e9ba0
--- /dev/null
+++ b/riscv/insns/cpopw.h
@@ -0,0 +1,6 @@
+require_rv64;
+require_extension('B');
+reg_t x = 0;
+for (int i = 0; i < 32; i++)
+  if (1 & (RS1 >> i)) x++;
+WRITE_RD(sext32(x));