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// Verify that optimized MIR only copies `a` once.
// compile-flags: -O -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)
}
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