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Allow '[Align(X)]' on fields. Support '[Packed(X)]'

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This commit is contained in:
Brian Fiete 2022-02-06 10:49:35 -05:00
parent 90f34b6bee
commit 58eec21fbf
9 changed files with 134 additions and 38 deletions
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33
IDEHelper/Compiler/BfResolvedTypeUtils.cpp
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@ -495,6 +495,39 @@ void BfFieldInstance::GetDataRange(int& dataIdx, int& dataCount)
dataCount = maxMergedDataIdx - minMergedDataIdx;
}
int BfFieldInstance::GetAlign(int packing)
{
int align = mResolvedType->mAlign;
if (packing > 0)
align = BF_MIN(align, packing);
if (mCustomAttributes != NULL)
{
auto module = mOwner->mModule;
for (auto& attrib : mCustomAttributes->mAttributes)
{
if (attrib.mType->IsInstanceOf(module->mCompiler->mAlignAttributeTypeDef))
{
align = 16; // System conservative default
if (!attrib.mCtorArgs.IsEmpty())
{
BfIRConstHolder* constHolder = module->mCurTypeInstance->mConstHolder;
auto constant = constHolder->GetConstant(attrib.mCtorArgs[0]);
if (constant != NULL)
{
int alignOverride = (int)BF_MAX(1, constant->mInt64);
if ((alignOverride & (alignOverride - 1)) == 0)
align = alignOverride;
else
module->Fail("Alignment must be a power of 2", attrib.GetRefNode());
}
}
}
}
}
return align;
}
//////////////////////////////////////////////////////////////////////////
int64 BfDeferredMethodCallData::GenerateMethodId(BfModule* module, int64 methodId)