slli.uw

Shift left unsigned word (Immediate)

This instruction is defined by:

Encoding

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Synopsis

Takes the least-significant word of xs1, zero-extends it, and shifts it left by the immediate.

This instruction is the same as slli with zext.w performed on xs1 before shifting.

Access

M HS U VS VU

Always

Always

Always

Always

Always

Decode Variables

Bits<6> shamt = $encoding[25:20];
Bits<5> xs1 = $encoding[19:15];
Bits<5> xd = $encoding[11:7];

Execution

  • Pruned, XLEN == 64

  • Original

X[xd] = X[xs1][31:0] << shamt;
X[xd] = X[xs1][31:0] << shamt;