solidity/test/libyul/yulOptimizerTests/fullSuite/ssaReverse.yul
2019-04-04 12:06:04 +02:00

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{
// This is an abi decode function with the SSA transform applied once.
// This test is supposed to verify that the SSA transform is correctly reversed by the full suite.
function abi_decode_t_bytes_calldata_ptr(offset_12, end_13) -> arrayPos_14, length_15
{
if iszero(slt(add(offset_12, 0x1f), end_13))
{
revert(0, 0)
}
let length_15_1 := calldataload(offset_12)
length_15 := length_15_1
if gt(length_15_1, 0xffffffffffffffff)
{
revert(0, 0)
}
let arrayPos_14_2 := add(offset_12, 0x20)
arrayPos_14 := arrayPos_14_2
if gt(add(arrayPos_14_2, mul(length_15_1, 0x1)), end_13)
{
revert(0, 0)
}
}
// prevent inlining
let a,b := abi_decode_t_bytes_calldata_ptr(mload(0),mload(1))
a,b := abi_decode_t_bytes_calldata_ptr(a,b)
a,b := abi_decode_t_bytes_calldata_ptr(a,b)
a,b := abi_decode_t_bytes_calldata_ptr(a,b)
a,b := abi_decode_t_bytes_calldata_ptr(a,b)
a,b := abi_decode_t_bytes_calldata_ptr(a,b)
a,b := abi_decode_t_bytes_calldata_ptr(a,b)
mstore(a,b)
}
// ====
// step: fullSuite
// ----
// {
// let a, b := abi_decode_t_bytes_calldata_ptr(mload(0), mload(1))
// let a_1, b_1 := abi_decode_t_bytes_calldata_ptr(a, b)
// let a_2, b_2 := abi_decode_t_bytes_calldata_ptr(a_1, b_1)
// let a_3, b_3 := abi_decode_t_bytes_calldata_ptr(a_2, b_2)
// let a_4, b_4 := abi_decode_t_bytes_calldata_ptr(a_3, b_3)
// let a_5, b_5 := abi_decode_t_bytes_calldata_ptr(a_4, b_4)
// let a_6, b_6 := abi_decode_t_bytes_calldata_ptr(a_5, b_5)
// mstore(a_6, b_6)
// function abi_decode_t_bytes_calldata_ptr(offset, end) -> arrayPos, length
// {
// if iszero(slt(add(offset, 0x1f), end))
// {
// revert(0, 0)
// }
// length := calldataload(offset)
// if gt(length, 0xffffffffffffffff)
// {
// revert(0, 0)
// }
// arrayPos := add(offset, 0x20)
// if gt(add(add(offset, length), 0x20), end)
// {
// revert(0, 0)
// }
// }
// }