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Auto merge of #49383 - nox:scalarpair, r=eddyb

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Allow niche-filling dataful variants to be represented as a ScalarPair

r? @eddyb
This commit is contained in:
bors 2018-03-28 08:01:22 +00:00
commit bcffdf1b6d
2 changed files with 21 additions and 4 deletions
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6
src/test/codegen/function-arguments.rs
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@ -133,6 +133,12 @@ pub fn trait_borrow(_: &Drop) {
pub fn trait_box(_: Box<Drop>) {
}
// CHECK: { i8*, i8* } @trait_option(i8* noalias %x.0, i8* %x.1)
#[no_mangle]
pub fn trait_option(x: Option<Box<Drop>>) -> Option<Box<Drop>> {
x
}
// CHECK: { [0 x i16]*, [[USIZE]] } @return_slice([0 x i16]* noalias nonnull readonly %x.0, [[USIZE]] %x.1)
#[no_mangle]
pub fn return_slice(x: &[u16]) -> &[u16] {