| // Verify that optimized MIR only copies `a` once. | |
| //@ compile-flags: -Copt-level=3 -C no-prepopulate-passes | |
| #![crate_type = "lib"] | |
| type T = [u8; 256]; | |
| #[no_mangle] | |
| pub fn f(a: T, b: fn(_: T, _: T)) { | |
| // CHECK: call void @llvm.memcpy.{{.*}}(ptr align 1 %{{.*}}, ptr align 1 %{{.*}}, {{.*}} 256, i1 false) | |
| // CHECK-NOT: call void @llvm.memcpy.{{.*}}(ptr align 1 %{{.*}}, ptr align 1 %{{.*}}, {{.*}} 256, i1 false) | |
| b(a, a) | |
| } |