rust/tests/mir-opt/gvn_clone.rs

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//@ test-mir-pass: GVN
//@ compile-flags: -Zmir-enable-passes=+InstSimplify-before-inline
// Check if we have transformed the default clone to copy in the specific pipeline.
// EMIT_MIR gvn_clone.{impl#0}-clone.GVN.diff
// CHECK-LABEL: ::clone(
// CHECK-NOT: = AllCopy { {{.*}} };
// CHECK: _0 = copy (*_1);
// CHECK: return;
#[derive(Clone)]
struct AllCopy {
a: i32,
b: u64,
c: [i8; 3],
}