BLT

Branch if Less Than

BLT rs1, rs2, offset

Take the branch if rs1 is less than rs2 (signed).

Details

BLT takes the branch if rs1 is less than rs2, using a signed comparison. The branch target is the PC plus the sign-extended B-immediate.

Pseudocode Operation

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

Example

BLT x10, x11, exit

Encoding

Binary Layout
imm[12
10:5]
rs2
31:27
rs1
26:22
100
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
    Offset