add

Integer add

This instruction is defined by:

Encoding

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Synopsis

Add the value in rs1 to rs2, and store the result in rd. Any overflow is thrown away.

Access

M

HS

U

VS

VU

Always

Always

Always

Always

Always

Decode Variables

Bits<5> rs2 = $encoding[24:20];
Bits<5> rs1 = $encoding[19:15];
Bits<5> rd = $encoding[11:7];

Execution

  • Pruned, XLEN == 64

  • Original

X[rd] = X[rs1] + X[rs2];
X[rd] = X[rs1] + X[rs2];