From acb7b8bc05bb67c309e472d4a07023f9dcbf4c23 Mon Sep 17 00:00:00 2001
From: wborgeaud <williamborgeaud@gmail.com>
Date: Tue, 31 May 2022 02:51:39 +0200
Subject: [PATCH] Use `reduce_base` in `reduce_with_powers_circuit`

---
 plonky2/src/plonk/plonk_common.rs | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/plonky2/src/plonk/plonk_common.rs b/plonky2/src/plonk/plonk_common.rs
index e4d7b8b5..42b9f90a 100644
--- a/plonky2/src/plonk/plonk_common.rs
+++ b/plonky2/src/plonk/plonk_common.rs
@@ -150,11 +150,9 @@ pub fn reduce_with_powers_circuit<F: RichField + Extendable<D>, const D: usize>(
             .rev()
             .fold(builder.zero(), |acc, &t| builder.mul_add(alpha, acc, t))
     } else {
-        let terms_ext = terms
-            .iter()
-            .map(|&t| builder.convert_to_ext(t))
-            .collect::<Vec<_>>();
-        reduce_with_powers_ext_circuit(builder, &terms_ext, alpha).0[0]
+        let alpha = builder.convert_to_ext(alpha);
+        let mut alpha = ReducingFactorTarget::new(alpha);
+        alpha.reduce_base(terms, builder).0[0]
     }
 }