rust/src/test/codegen/vec-iter-collect-len.rs

// ignore-debug: the debug assertions get in the way
// no-system-llvm
// compile-flags: -O
#![crate_type="lib"]

#[no_mangle]
pub fn get_len() -> usize {
    // CHECK-LABEL: @get_len
    // CHECK-NOT: call
    // CHECK-NOT: invoke
    [1, 2, 3].iter().collect::<Vec<_>>().len()
}
inore some codegen tests when debug assertions are enabled 2018-08-06 11:45:15 -05:00			`// ignore-debug: the debug assertions get in the way`
std: Ensure OOM is classified as `nounwind` OOM can't unwind today, and historically it's been optimized as if it can't unwind. This accidentally regressed with recent changes to the OOM handler, so this commit adds in a codegen test to assert that everything gets optimized away after the OOM function is approrpiately classified as nounwind Closes #50925 2018-05-24 14:03:05 -05:00			`// no-system-llvm`
			`// compile-flags: -O`
			`#![crate_type="lib"]`

			`#[no_mangle]`
			`pub fn get_len() -> usize {`
			`// CHECK-LABEL: @get_len`
			`// CHECK-NOT: call`
			`// CHECK-NOT: invoke`
			`[1, 2, 3].iter().collect::<Vec<_>>().len()`
			`}`