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run alloc benchmarks in Miri and fix UB
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9b735a7132
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780952f922
@ -22,7 +22,6 @@ fn allocate_zeroed() {
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}
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#[bench]
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#[cfg_attr(miri, ignore)] // isolated Miri does not support benchmarks
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fn alloc_owned_small(b: &mut Bencher) {
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b.iter(|| {
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let _: Box<_> = Box::new(10);
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@ -3,7 +3,6 @@ use core::iter::TrustedLen;
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use super::*;
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#[bench]
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#[cfg_attr(miri, ignore)] // isolated Miri does not support benchmarks
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fn bench_push_back_100(b: &mut test::Bencher) {
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let mut deq = VecDeque::with_capacity(101);
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b.iter(|| {
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@ -16,7 +15,6 @@ fn bench_push_back_100(b: &mut test::Bencher) {
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}
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#[bench]
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#[cfg_attr(miri, ignore)] // isolated Miri does not support benchmarks
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fn bench_push_front_100(b: &mut test::Bencher) {
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let mut deq = VecDeque::with_capacity(101);
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b.iter(|| {
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@ -29,12 +27,15 @@ fn bench_push_front_100(b: &mut test::Bencher) {
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}
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#[bench]
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#[cfg_attr(miri, ignore)] // isolated Miri does not support benchmarks
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fn bench_pop_back_100(b: &mut test::Bencher) {
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let mut deq = VecDeque::<i32>::with_capacity(101);
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let size = 100;
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let mut deq = VecDeque::<i32>::with_capacity(size+1);
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// We'll mess with private state to pretend like `deq` is filled.
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// Make sure the buffer is initialized so that we don't read uninit memory.
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unsafe { deq.ptr().write_bytes(0u8, size+1) };
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b.iter(|| {
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deq.head = 100;
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deq.head = size;
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deq.tail = 0;
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while !deq.is_empty() {
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test::black_box(deq.pop_back());
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@ -43,9 +44,9 @@ fn bench_pop_back_100(b: &mut test::Bencher) {
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}
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#[bench]
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#[cfg_attr(miri, ignore)] // isolated Miri does not support benchmarks
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fn bench_retain_whole_10000(b: &mut test::Bencher) {
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let v = (1..100000).collect::<VecDeque<u32>>();
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let size = if cfg!(miri) { 1000 } else { 100000 };
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let v = (1..size).collect::<VecDeque<u32>>();
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b.iter(|| {
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let mut v = v.clone();
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@ -54,9 +55,9 @@ fn bench_retain_whole_10000(b: &mut test::Bencher) {
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}
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#[bench]
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#[cfg_attr(miri, ignore)] // isolated Miri does not support benchmarks
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fn bench_retain_odd_10000(b: &mut test::Bencher) {
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let v = (1..100000).collect::<VecDeque<u32>>();
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let size = if cfg!(miri) { 1000 } else { 100000 };
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let v = (1..size).collect::<VecDeque<u32>>();
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b.iter(|| {
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let mut v = v.clone();
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@ -65,23 +66,26 @@ fn bench_retain_odd_10000(b: &mut test::Bencher) {
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}
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#[bench]
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#[cfg_attr(miri, ignore)] // isolated Miri does not support benchmarks
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fn bench_retain_half_10000(b: &mut test::Bencher) {
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let v = (1..100000).collect::<VecDeque<u32>>();
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let size = if cfg!(miri) { 1000 } else { 100000 };
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let v = (1..size).collect::<VecDeque<u32>>();
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b.iter(|| {
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let mut v = v.clone();
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v.retain(|x| *x > 50000)
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v.retain(|x| *x > size/2)
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})
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}
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#[bench]
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#[cfg_attr(miri, ignore)] // isolated Miri does not support benchmarks
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fn bench_pop_front_100(b: &mut test::Bencher) {
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let mut deq = VecDeque::<i32>::with_capacity(101);
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let size = 100;
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let mut deq = VecDeque::<i32>::with_capacity(size+1);
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// We'll mess with private state to pretend like `deq` is filled.
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// Make sure the buffer is initialized so that we don't read uninit memory.
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unsafe { deq.ptr().write_bytes(0u8, size+1) };
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b.iter(|| {
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deq.head = 100;
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deq.head = size;
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deq.tail = 0;
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while !deq.is_empty() {
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test::black_box(deq.pop_front());
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