rust/tests/codegen/repeat-trusted-len.rs

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// compile-flags: -O
//
#![crate_type = "lib"]
use std::iter;
// CHECK-LABEL: @repeat_take_collect
#[no_mangle]
pub fn repeat_take_collect() -> Vec<u8> {
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// CHECK: call void @llvm.memset.{{.+}}({{i8\*|ptr}} {{.*}}align 1{{.*}} %{{.*}}, i8 42, i{{[0-9]+}} 100000, i1 false)
iter::repeat(42).take(100000).collect()
}
// CHECK-LABEL: @repeat_with_take_collect
#[no_mangle]
pub fn repeat_with_take_collect() -> Vec<u8> {
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// CHECK: call void @llvm.memset.{{.+}}({{i8\*|ptr}} {{.*}}align 1{{.*}} %{{.*}}, i8 13, i{{[0-9]+}} 12345, i1 false)
iter::repeat_with(|| 13).take(12345).collect()
}