test/bench/go1: fix size for RegexpMatchMedium_32

Change-Id: Idc67abb95248bc010820a89dd6096a2da334e723
GitHub-Last-Rev: ae9014b011efb2692f853888c1860920d1acc3cb
GitHub-Pull-Request: golang/go#47254
Reviewed-on: https://go-review.googlesource.com/c/go/+/335189
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Alberto Donizetti <alb.donizetti@gmail.com>
diff --git a/test/bench/go1/regexp_test.go b/test/bench/go1/regexp_test.go
index 3ce9f3a..dd1034f 100644
--- a/test/bench/go1/regexp_test.go
+++ b/test/bench/go1/regexp_test.go
@@ -53,7 +53,7 @@
 func BenchmarkRegexpMatchEasy0_1K(b *testing.B)  { benchmark(b, easy0, 1<<10) }
 func BenchmarkRegexpMatchEasy1_32(b *testing.B)  { benchmark(b, easy1, 32<<0) }
 func BenchmarkRegexpMatchEasy1_1K(b *testing.B)  { benchmark(b, easy1, 1<<10) }
-func BenchmarkRegexpMatchMedium_32(b *testing.B) { benchmark(b, medium, 1<<0) }
+func BenchmarkRegexpMatchMedium_32(b *testing.B) { benchmark(b, medium, 32<<0) }
 func BenchmarkRegexpMatchMedium_1K(b *testing.B) { benchmark(b, medium, 1<<10) }
 func BenchmarkRegexpMatchHard_32(b *testing.B)   { benchmark(b, hard, 32<<0) }
 func BenchmarkRegexpMatchHard_1K(b *testing.B)   { benchmark(b, hard, 1<<10) }