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// RUN: %target-swiftc_driver -Osize -emit-sil %s -o /dev/null -Xfrontend -verify
// REQUIRES: optimized_stdlib,swift_stdlib_no_asserts
// REQUIRES: swift_in_compiler
// An extraction from the benchmark ChaCha20 that we were not ignoring
// dealloc_stack and other end scope instructions.
enum ChaCha20 { }
extension ChaCha20 {
@inline(never)
public static func encrypt<Key: Collection, Nonce: Collection, Bytes: MutableCollection>(bytes: inout Bytes, key: Key, nonce: Nonce, initialCounter: UInt32 = 0) where Bytes.Element == UInt8, Key.Element == UInt8, Nonce.Element == UInt8 {
print("I am lost...")
}
}
@inline(never)
func checkResult(_ plaintext: [UInt8]) {
precondition(plaintext.first! == 6 && plaintext.last! == 254)
var hash: UInt64 = 0
for byte in plaintext {
// rotate
hash = (hash &<< 8) | (hash &>> (64 - 8))
hash ^= UInt64(byte)
}
precondition(hash == 0xa1bcdb217d8d14e4)
}
@_semantics("optremark.sil-assembly-vision-remark-gen")
public func run_ChaCha(_ N: Int) {
let key = Array(repeating: UInt8(1), count: 32)
let nonce = Array(repeating: UInt8(2), count: 12)
var checkedtext = Array(repeating: UInt8(0), count: 1024)
ChaCha20.encrypt(bytes: &checkedtext, key: key, nonce: nonce)
checkResult(checkedtext)
var plaintext = Array(repeating: UInt8(0), count: 30720)
for _ in 1...N {
ChaCha20.encrypt(bytes: &plaintext, key: key, nonce: nonce)
print(plaintext.first!) // expected-remark @:11 {{heap allocated ref of type '}}
// expected-remark @-1:27 {{release of type '}}
}
} // expected-remark {{release of type '}}
// expected-note @-7 {{of 'plaintext}}
// expected-remark @-2 {{release of type '}}
// expected-note @-16 {{of 'nonce}}
// expected-remark @-4 {{release of type '}}
// expected-note @-19 {{of 'key}}
// expected-remark @-6 {{release of type '}}
// expected-note @-18 {{of 'checkedtext}}
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