BNE

Branch if Not Equal

BNE rs1, rs2, offset

Take the branch if registers rs1 and rs2 are not equal.

Details

BNE takes the branch if rs1 is not equal to rs2. The branch target is the PC of the branch plus the sign-extended B-immediate within a ±4 KiB range.

Pseudocode Operation

if (R[rs1] != R[rs2]) PC += sext(offset);

Example

BNE x5, x6, loop

Encoding

Binary Layout
imm[12
10:5]
rs2
31:27
rs1
26:22
001
21:19
imm[4:1
11]
1100011
18:12
 
Format B-Type
Opcode 0x63
Extension RV32I

Operands

  • rs1
    Source register 1 (integer)
  • rs2
    Source register 2 (integer)
  • offset
    PC-relative offset