Make sse4-strstr benchmarks optional

Author: marmeladema

bench/Cargo.toml

@@ -8,7 +8,7 @@ publish = false
 criterion = "0.3"
 memmem = "0.1"
 sliceslice = { path = ".." }
-sse4-strstr = { path = "sse4-strstr" }
+sse4-strstr = { path = "sse4-strstr", optional = true }
 twoway = "0.2"
 
 [[bench]]

bench/benches/i386.rs

@@ -54,6 +54,7 @@ fn search_short_haystack(c: &mut Criterion) {
     {
         use sliceslice::x86::DynamicAvx2Searcher;
 
+        #[cfg(feature = "sse4-strstr")]
         group.bench_function("sse4_strstr::avx2_strstr_v2", |b| {
             b.iter(|| {
                 for (i, needle) in needles.iter().enumerate() {
@@ -130,6 +131,7 @@ fn search_long_haystack(c: &mut Criterion) {
     {
         use sliceslice::x86::DynamicAvx2Searcher;
 
+        #[cfg(feature = "sse4-strstr")]
         group.bench_function("sse4_strstr::avx2_strstr_v2", |b| {
             b.iter(|| {
                 for needle in &needles {

bench/benches/random.rs

@@ -47,6 +47,7 @@ fn search(c: &mut Criterion) {
             {
                 use sliceslice::x86::DynamicAvx2Searcher;
 
+                #[cfg(feature = "sse4-strstr")]
                 group.bench_with_input(
                     BenchmarkId::new("sse4_strstr::avx2_strstr_v2", parameter),
                     &size,