168 lines
4.6 KiB
Rust
168 lines
4.6 KiB
Rust
// compile-flags: -O -Z merge-functions=disabled
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// only-x86_64
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// ignore-debug
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// min-llvm-version: 15.0
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#![crate_type = "lib"]
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// CHECK-LABEL: @vec_zero_bytes
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#[no_mangle]
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pub fn vec_zero_bytes(n: usize) -> Vec<u8> {
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK-NOT: call {{.*}}llvm.memset
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// CHECK: call {{.*}}__rust_alloc_zeroed(
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK-NOT: call {{.*}}llvm.memset
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// CHECK: ret void
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vec![0; n]
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}
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// CHECK-LABEL: @vec_one_bytes
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#[no_mangle]
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pub fn vec_one_bytes(n: usize) -> Vec<u8> {
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc_zeroed(
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// CHECK: call {{.*}}__rust_alloc(
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// CHECK: call {{.*}}llvm.memset
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc_zeroed(
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// CHECK: ret void
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vec![1; n]
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}
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// CHECK-LABEL: @vec_zero_scalar
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#[no_mangle]
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pub fn vec_zero_scalar(n: usize) -> Vec<i32> {
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK: call {{.*}}__rust_alloc_zeroed(
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK: ret void
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vec![0; n]
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}
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// CHECK-LABEL: @vec_one_scalar
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#[no_mangle]
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pub fn vec_one_scalar(n: usize) -> Vec<i32> {
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc_zeroed(
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// CHECK: call {{.*}}__rust_alloc(
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc_zeroed(
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// CHECK: ret void
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vec![1; n]
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}
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// CHECK-LABEL: @vec_zero_rgb48
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#[no_mangle]
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pub fn vec_zero_rgb48(n: usize) -> Vec<[u16; 3]> {
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK: call {{.*}}__rust_alloc_zeroed(
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK: ret void
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vec![[0, 0, 0]; n]
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}
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// CHECK-LABEL: @vec_zero_array_16
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#[no_mangle]
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pub fn vec_zero_array_16(n: usize) -> Vec<[i64; 16]> {
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK: call {{.*}}__rust_alloc_zeroed(
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK: ret void
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vec![[0_i64; 16]; n]
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}
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// CHECK-LABEL: @vec_zero_tuple
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#[no_mangle]
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pub fn vec_zero_tuple(n: usize) -> Vec<(i16, u8, char)> {
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK: call {{.*}}__rust_alloc_zeroed(
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK: ret void
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vec![(0, 0, '\0'); n]
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}
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// CHECK-LABEL: @vec_non_zero_tuple
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#[no_mangle]
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pub fn vec_non_zero_tuple(n: usize) -> Vec<(i16, u8, char)> {
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc_zeroed(
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// CHECK: call {{.*}}__rust_alloc(
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc_zeroed(
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// CHECK: ret void
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vec![(0, 0, 'A'); n]
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}
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// CHECK-LABEL: @vec_option_bool
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#[no_mangle]
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pub fn vec_option_bool(n: usize) -> Vec<Option<bool>> {
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK: call {{.*}}__rust_alloc_zeroed(
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// CHECK-NOT: call {{.*}}alloc::vec::from_elem
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// CHECK-NOT: call {{.*}}reserve
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// CHECK-NOT: call {{.*}}__rust_alloc(
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// CHECK: ret void
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vec![Some(false); n]
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}
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// Ensure that __rust_alloc_zeroed gets the right attributes for LLVM to optimize it away.
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// CHECK: declare noalias ptr @__rust_alloc_zeroed(i64, i64 allocalign) unnamed_addr [[RUST_ALLOC_ZEROED_ATTRS:#[0-9]+]]
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// CHECK-DAG: attributes [[RUST_ALLOC_ZEROED_ATTRS]] = { {{.*}} allockind("alloc,zeroed,aligned") allocsize(0) uwtable "alloc-family"="__rust_alloc" {{.*}} }
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