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-rw-r--r--riscv/insns/bclri.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/riscv/insns/bclri.h b/riscv/insns/bclri.h
index 8df6a5f..7ab4250 100644
--- a/riscv/insns/bclri.h
+++ b/riscv/insns/bclri.h
@@ -1,3 +1,4 @@
require_extension(EXT_ZBS);
+require(SHAMT < xlen);
int shamt = SHAMT & (xlen-1);
WRITE_RD(sext_xlen(RS1 & ~(1LL << shamt)));