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[Sol->Yul] Fixing storage array index access

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This commit is contained in:
Djordje Mijovic
2020-09-08 16:02:56 +02:00
parent 0b0c814b49
commit ec6d21cde2
3 changed files with 21 additions and 3 deletions
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libsolidity/codegen/YulUtilFunctions.cpp
+3 -3
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@@ -1198,10 +1198,9 @@ string YulUtilFunctions::storageArrayIndexAccessFunction(ArrayType const& _type)
slot := array
}
<!isBytesArray>
let itemsPerSlot := div(0x20, <storageBytes>)
let dataArea := <dataAreaFunc>(array)
slot := add(dataArea, div(index, itemsPerSlot))
offset := mod(index, itemsPerSlot)
slot := add(dataArea, div(index, <itemsPerSlot>))
offset := mul(mod(index, <itemsPerSlot>), <storageBytes>)
</isBytesArray>
<!multipleItemsPerSlot>
let dataArea := <dataAreaFunc>(array)
@@ -1217,6 +1216,7 @@ string YulUtilFunctions::storageArrayIndexAccessFunction(ArrayType const& _type)
("isBytesArray", _type.isByteArray())
("storageSize", _type.baseType()->storageSize().str())
("storageBytes", toString(_type.baseType()->storageBytes()))
("itemsPerSlot", to_string(32 / _type.baseType()->storageBytes()))
.render();
});
}