| # RUN: not llvm-mc -triple riscv64 -mattr=+experimental-b,experimental-zbs < %s 2>&1 | FileCheck %s | 
 |  | 
 | # Too few operands | 
 | sbclrw t0, t1 # CHECK: :[[@LINE]]:1: error: too few operands for instruction | 
 | # Too few operands | 
 | sbsetw t0, t1 # CHECK: :[[@LINE]]:1: error: too few operands for instruction | 
 | # Too few operands | 
 | sbinvw t0, t1 # CHECK: :[[@LINE]]:1: error: too few operands for instruction | 
 | # Too few operands | 
 | sbextw t0, t1 # CHECK: :[[@LINE]]:1: error: too few operands for instruction | 
 | # Too few operands | 
 | sbclriw t0, t1 # CHECK: :[[@LINE]]:1: error: too few operands for instruction | 
 | # Immediate operand out of range | 
 | sbclriw t0, t1, 32 # CHECK: :[[@LINE]]:17: error: immediate must be an integer in the range [0, 31] | 
 | sbclriw t0, t1, -1 # CHECK: :[[@LINE]]:17: error: immediate must be an integer in the range [0, 31] | 
 | # Too few operands | 
 | sbsetiw t0, t1 # CHECK: :[[@LINE]]:1: error: too few operands for instruction | 
 | # Immediate operand out of range | 
 | sbsetiw t0, t1, 32 # CHECK: :[[@LINE]]:17: error: immediate must be an integer in the range [0, 31] | 
 | sbsetiw t0, t1, -1 # CHECK: :[[@LINE]]:17: error: immediate must be an integer in the range [0, 31] | 
 | # Too few operands | 
 | sbinviw t0, t1 # CHECK: :[[@LINE]]:1: error: too few operands for instruction | 
 | # Immediate operand out of range | 
 | sbinviw t0, t1, 32 # CHECK: :[[@LINE]]:17: error: immediate must be an integer in the range [0, 31] | 
 | sbinviw t0, t1, -1 # CHECK: :[[@LINE]]:17: error: immediate must be an integer in the range [0, 31] |