cerc-io/solidity
11
0
Fork 0
mirror of https://github.com/ethereum/solidity synced 2023-10-03 13:03:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Store small byte arrays and strings in storage in one slot with their

Browse Source 
length.
This commit is contained in:
chriseth
2015-10-02 13:12:23 +02:00
parent cae8db989a
commit da408640ca
5 changed files with 339 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libsolidity/CompilerUtils.cpp
+1 -9
View File
@@ -237,15 +237,7 @@ void CompilerUtils::encodeToMemory(
// stack: ... <end_of_mem> <value...>
// copy length to memory
m_context << eth::dupInstruction(1 + arrayType.sizeOnStack());
if (arrayType.location() == DataLocation::CallData)
m_context << eth::Instruction::DUP2; // length is on stack
else if (arrayType.location() == DataLocation::Storage)
m_context << eth::Instruction::DUP2 << eth::Instruction::SLOAD;
else
{
solAssert(arrayType.location() == DataLocation::Memory, "");
m_context << eth::Instruction::DUP2 << eth::Instruction::MLOAD;
}
ArrayUtils(m_context).retrieveLength(arrayType, 1);
// stack: ... <end_of_mem> <value...> <end_of_mem'> <length>
storeInMemoryDynamic(IntegerType(256), true);
// stack: ... <end_of_mem> <value...> <end_of_mem''>