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// compile-flags: -C no-prepopulate-passes -Copt-level=0
// Test that tuples get optimized layout, in particular with a ZST in the last field (#63244)
#![crate_type="lib"]
type ScalarZstLast = (u128, ());
// CHECK: define {{(dso_local )?}}i128 @test_ScalarZstLast(i128 %_1)
#[no_mangle]
pub fn test_ScalarZstLast(_: ScalarZstLast) -> ScalarZstLast { loop {} }
type ScalarZstFirst = ((), u128);
// CHECK: define {{(dso_local )?}}i128 @test_ScalarZstFirst(i128 %_1)
#[no_mangle]
pub fn test_ScalarZstFirst(_: ScalarZstFirst) -> ScalarZstFirst { loop {} }
type ScalarPairZstLast = (u8, u128, ());
// CHECK: define {{(dso_local )?}}{ i128, i8 } @test_ScalarPairZstLast(i128 %_1.0, i8 %_1.1)
#[no_mangle]
pub fn test_ScalarPairZstLast(_: ScalarPairZstLast) -> ScalarPairZstLast { loop {} }
type ScalarPairZstFirst = ((), u8, u128);
// CHECK: define {{(dso_local )?}}{ i8, i128 } @test_ScalarPairZstFirst(i8 %_1.0, i128 %_1.1)
#[no_mangle]
pub fn test_ScalarPairZstFirst(_: ScalarPairZstFirst) -> ScalarPairZstFirst { loop {} }
type ScalarPairLotsOfZsts = ((), u8, (), u128, ());
// CHECK: define {{(dso_local )?}}{ i128, i8 } @test_ScalarPairLotsOfZsts(i128 %_1.0, i8 %_1.1)
#[no_mangle]
pub fn test_ScalarPairLotsOfZsts(_: ScalarPairLotsOfZsts) -> ScalarPairLotsOfZsts { loop {} }
type ScalarPairLottaNesting = (((), ((), u8, (), u128, ())), ());
// CHECK: define {{(dso_local )?}}{ i128, i8 } @test_ScalarPairLottaNesting(i128 %_1.0, i8 %_1.1)
#[no_mangle]
pub fn test_ScalarPairLottaNesting(_: ScalarPairLottaNesting) -> ScalarPairLottaNesting { loop {} }
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