| // Copyright 2016 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // compile-flags: -O -C no-prepopulate-passes |
| |
| #![crate_type = "lib"] |
| |
| // CHECK-LABEL: @test |
| #[no_mangle] |
| pub fn test() { |
| let a = 0; |
| &a; // keep variable in an alloca |
| |
| // CHECK: [[S_a:%[0-9]+]] = bitcast i32* %a to i8* |
| // CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, i8* [[S_a]]) |
| |
| { |
| let b = &Some(a); |
| &b; // keep variable in an alloca |
| |
| // CHECK: [[S_b:%[0-9]+]] = bitcast { i32, i32 }** %b to i8* |
| // CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, i8* [[S_b]]) |
| |
| // CHECK: [[S__4:%[0-9]+]] = bitcast { i32, i32 }* %_4 to i8* |
| // CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, i8* [[S__4]]) |
| |
| // CHECK: [[E__4:%[0-9]+]] = bitcast { i32, i32 }* %_4 to i8* |
| // CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, i8* [[E__4]]) |
| |
| // CHECK: [[E_b:%[0-9]+]] = bitcast { i32, i32 }** %b to i8* |
| // CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, i8* [[E_b]]) |
| } |
| |
| let c = 1; |
| &c; // keep variable in an alloca |
| |
| // CHECK: [[S_c:%[0-9]+]] = bitcast i32* %c to i8* |
| // CHECK: call void @llvm.lifetime.start{{.*}}(i{{[0-9 ]+}}, i8* [[S_c]]) |
| |
| // CHECK: [[E_c:%[0-9]+]] = bitcast i32* %c to i8* |
| // CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, i8* [[E_c]]) |
| |
| // CHECK: [[E_a:%[0-9]+]] = bitcast i32* %a to i8* |
| // CHECK: call void @llvm.lifetime.end{{.*}}(i{{[0-9 ]+}}, i8* [[E_a]]) |
| } |