fix: exp bounds

Author: rymnc

benches/benches/vm_set/alu.rs

@@ -248,7 +248,7 @@ pub fn run(c: &mut Criterion) {
             niop_bench!(&mut niop, ADD, U8, *lhs, *rhs, i);
             niop_bench!(&mut niop, SUB, U8, big, small, i);
             niop_bench!(&mut niop, MUL, U8, *lhs, *rhs, i);
-            niop_bench!(&mut niop, EXP, U8, *lhs, 3, i);
+            niop_bench!(&mut niop, EXP, U8, *lhs, 2, i);
             niop_bench!(&mut niop, SLL, U8, *lhs, 2, i);
             niop_bench!(&mut niop, XNOR, U8, *lhs, *rhs, i);
         }
@@ -259,7 +259,7 @@ pub fn run(c: &mut Criterion) {
             niop_bench!(&mut niop, ADD, U16, *lhs, *rhs, i);
             niop_bench!(&mut niop, SUB, U16, *lhs, *rhs, i);
             niop_bench!(&mut niop, MUL, U16, *lhs, *rhs, i);
-            niop_bench!(&mut niop, EXP, U16, *lhs, 4, i);
+            niop_bench!(&mut niop, EXP, U16, *lhs, 2, i);
             niop_bench!(&mut niop, SLL, U16, *lhs, 2, i);
             niop_bench!(&mut niop, XNOR, U16, *lhs, *rhs, i);
         }
@@ -272,7 +272,7 @@ pub fn run(c: &mut Criterion) {
             niop_bench!(&mut niop, ADD, U32, *lhs, *rhs, i);
             niop_bench!(&mut niop, SUB, U32, *lhs, *rhs, i);
             niop_bench!(&mut niop, MUL, U32, *lhs, *rhs, i);
-            niop_bench!(&mut niop, EXP, U32, *lhs, 3, i);
+            niop_bench!(&mut niop, EXP, U32, *lhs, 2, i);
             niop_bench!(&mut niop, SLL, U32, *lhs, 2, i);
             niop_bench!(&mut niop, XNOR, U32, *lhs, *rhs, i);
         }