//@ compile-flags: -Copt-level=3 -C no-prepopulate-passes //@ min-llvm-version: 19 (for trunc nuw) //@ only-x86_64 (because these discriminants are isize) #![crate_type = "lib"] // CHECK-LABEL: @option_match #[no_mangle] pub fn option_match(x: Option) -> u16 { // CHECK: %x = alloca [8 x i8] // CHECK: store i32 %0, ptr %x // CHECK: %[[TAG:.+]] = load i32, ptr %x // CHECK-SAME: !range ![[ZERO_ONE_32:[0-9]+]] // CHECK: %[[DISCR:.+]] = zext i32 %[[TAG]] to i64 // CHECK: %[[COND:.+]] = trunc nuw i64 %[[DISCR]] to i1 // CHECK: br i1 %[[COND]], label %[[TRUE:[a-z0-9]+]], label %[[FALSE:[a-z0-9]+]] // CHECK: [[TRUE]]: // CHECK: store i16 13 // CHECK: [[FALSE]]: // CHECK: store i16 42 match x { Some(_) => 13, None => 42, } } // CHECK-LABEL: @result_match #[no_mangle] pub fn result_match(x: Result) -> u16 { // CHECK: %x = alloca [16 x i8] // CHECK: store i64 %0, ptr %x // CHECK: %[[DISCR:.+]] = load i64, ptr %x // CHECK-SAME: !range ![[ZERO_ONE_64:[0-9]+]] // CHECK: %[[COND:.+]] = trunc nuw i64 %[[DISCR]] to i1 // CHECK: br i1 %[[COND]], label %[[TRUE:[a-z0-9]+]], label %[[FALSE:[a-z0-9]+]] // CHECK: [[TRUE]]: // CHECK: store i16 13 // CHECK: [[FALSE]]: // CHECK: store i16 42 match x { Err(_) => 13, Ok(_) => 42, } } // CHECK: ![[ZERO_ONE_32]] = !{i32 0, i32 2} // CHECK: ![[ZERO_ONE_64]] = !{i64 0, i64 2}