rust/tests/codegen-llvm/lifetime_start_end.rs
Matthew Maurer 258915a555 llvm: Accept new LLVM lifetime format
LLVM removed the size parameter from the lifetime format.
Tolerate not having that size parameter.
2025-08-11 22:00:41 +00:00

35 lines
970 B
Rust

//@ compile-flags: -Copt-level=3 -C no-prepopulate-passes -Zmir-opt-level=0
#![crate_type = "lib"]
// CHECK-LABEL: @test
#[no_mangle]
pub fn test() {
let a = 0u8;
&a; // keep variable in an alloca
// CHECK: call void @llvm.lifetime.start{{.*}}({{(i[0-9 ]+, )?}}ptr %a)
{
let b = &Some(a);
&b; // keep variable in an alloca
// CHECK: call void @llvm.lifetime.start{{.*}}({{(i[0-9 ]+, )?}}{{.*}})
// CHECK: call void @llvm.lifetime.start{{.*}}({{(i[0-9 ]+, )?}}{{.*}})
// CHECK: call void @llvm.lifetime.end{{.*}}({{(i[0-9 ]+, )?}}{{.*}})
// CHECK: call void @llvm.lifetime.end{{.*}}({{(i[0-9 ]+, )?}}{{.*}})
}
let c = 1u8;
&c; // keep variable in an alloca
// CHECK: call void @llvm.lifetime.start{{.*}}({{(i[0-9 ]+, )?}}ptr %c)
// CHECK: call void @llvm.lifetime.end{{.*}}({{(i[0-9 ]+, )?}}ptr %c)
// CHECK: call void @llvm.lifetime.end{{.*}}({{(i[0-9 ]+, )?}}ptr %a)
}