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ConstEval updates, better const struct support

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This commit is contained in:
Brian Fiete 2020-12-22 04:50:37 -08:00
parent 9b80c26d0a
commit be929c3626
21 changed files with 1404 additions and 527 deletions
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85
IDEHelper/Backend/BeMCContext.cpp
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@ -2864,6 +2864,39 @@ BeMCOperand BeMCContext::CreateLoad(const BeMCOperand& mcTarget)
return result;
}
static bool NeedsDecompose(BeConstant* constant)
{
if (auto arrayConst = BeValueDynCast<BeStructConstant>(constant))
{
for (auto& val : arrayConst->mMemberValues)
{
if (NeedsDecompose(val))
return true;
}
return false;
}
if (auto globalVar = BeValueDynCast<BeGlobalVariable>(constant))
{
return true;
}
else if (auto castConst = BeValueDynCast<BeCastConstant>(constant))
{
return true;
}
else if (auto castConst = BeValueDynCast<BeBitCastInst>(constant))
{
if (auto targetConstant = BeValueDynCast<BeConstant>(castConst->mValue))
return NeedsDecompose(targetConstant);
}
else if (auto castConst = BeValueDynCast<BeGEPConstant>(constant))
{
return NeedsDecompose(castConst->mTarget);
}
return false;
}
void BeMCContext::CreateStore(BeMCInstKind instKind, const BeMCOperand& val, const BeMCOperand& ptr)
{
BeMCOperand mcVal = val;
@ -2871,33 +2904,30 @@ void BeMCContext::CreateStore(BeMCInstKind instKind, const BeMCOperand& val, con
if (mcVal.mKind == BeMCOperandKind_ConstAgg)
{
bool needsDecompose = false;
if (auto arrayConst = BeValueDynCast<BeStructConstant>(mcVal.mConstant))
if (auto aggConst = BeValueDynCast<BeStructConstant>(mcVal.mConstant))
{
for (auto& val : arrayConst->mMemberValues)
{
if (auto globalVar = BeValueDynCast<BeGlobalVariable>(val))
{
needsDecompose = true;
}
else if (auto castConst = BeValueDynCast<BeCastConstant>(val))
{
needsDecompose = true;
}
}
if (needsDecompose)
if (NeedsDecompose(mcVal.mConstant))
{
int offset = 0;
auto arrayType = arrayConst->GetType();
BEMC_ASSERT(arrayType->IsSizedArray());
auto sizedArrayType = (BeSizedArrayType*)arrayType;
for (auto& val : arrayConst->mMemberValues)
{
auto destOperand = AllocVirtualReg(mModule->mContext->GetPointerTo(sizedArrayType->mElementType));
auto aggType = aggConst->GetType();
for (int memberIdx = 0; memberIdx < (int)aggConst->mMemberValues.size(); memberIdx++)
{
auto val = aggConst->mMemberValues[memberIdx];
BeType* elemType = NULL;
if (aggType->IsSizedArray())
elemType = ((BeSizedArrayType*)aggType)->mElementType;
else
{
auto& memberInfo = ((BeStructType*)aggType)->mMembers[memberIdx];
offset = memberInfo.mByteOffset;
elemType = memberInfo.mType;
}
if (elemType->mSize == 0)
continue;
auto destOperand = AllocVirtualReg(mModule->mContext->GetPointerTo(elemType));
auto vregInfo = GetVRegInfo(destOperand);
vregInfo->mDefOnFirstUse = true;
vregInfo->mRelTo = mcPtr;
@ -2905,12 +2935,13 @@ void BeMCContext::CreateStore(BeMCInstKind instKind, const BeMCOperand& val, con
vregInfo->mRelOffset = BeMCOperand::FromImmediate(offset);
destOperand.mKind = BeMCOperandKind_VRegLoad;
//destOperand.mKind = BeMCOperandKind_VRegLoad;
auto elementVal = GetOperand(val);
AllocInst(instKind, destOperand, elementVal);
//AllocInst(instKind, destOperand, elementVal);
CreateStore(instKind, elementVal, destOperand);
offset += sizedArrayType->mElementType->mSize;
offset += elemType->mSize;
}
return;
}
@ -15742,7 +15773,7 @@ void BeMCContext::Generate(BeFunction* function)
mDbgPreferredRegs[32] = X64Reg_R8;*/
//mDbgPreferredRegs[8] = X64Reg_RAX;
//mDebugging = (function->mName == "DoCallback");
mDebugging = (function->mName == "?SetDefaults@KeySettings@BeefTest@bf@@QEAAXXZ");
// || (function->mName == "?MethodA@TestProgram@BeefTest@bf@@CAXXZ");
// || (function->mName == "?Hey@Blurg@bf@@SAXXZ")
// ;