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[Clang] Fix 'counted_by' for nested struct pointers #110497

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Merged
merged 5 commits into from
Oct 3, 2024
Merged

[Clang] Fix 'counted_by' for nested struct pointers #110497

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15b6932
[Clang] Fix 'counted_by' for nested struct pointers
Cydox Sep 29, 2024
0bdcbc6
[Clang] cleanup CodeGenFunction::EmitLoadOfCountedByField
Cydox Oct 1, 2024
841286c
no special case for MemberExpr, just LValue
Cydox Oct 2, 2024
60c3bd8
check for pointer, not LValue
Cydox Oct 3, 2024
06d39e3
check if StructBase is LValue
Cydox Oct 3, 2024
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11 changes: 5 additions & 6 deletions clang/lib/CodeGen/CGExpr.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,6 @@
//
//===----------------------------------------------------------------------===//

#include <iostream>
#include "ABIInfoImpl.h"
#include "CGCUDARuntime.h"
#include "CGCXXABI.h"
Expand Down Expand Up @@ -1164,15 +1163,15 @@ llvm::Value *CodeGenFunction::EmitLoadOfCountedByField(
return nullptr;

llvm::Value *Res = nullptr;
if (StructBase->isLValue()) {
LValue LV = EmitLValue(StructBase);
Address Addr = LV.getAddress();
Res = Addr.emitRawPointer(*this);
} else {
if (StructBase->getType()->isPointerType()) {
LValueBaseInfo BaseInfo;
TBAAAccessInfo TBAAInfo;
Address Addr = EmitPointerWithAlignment(StructBase, &BaseInfo, &TBAAInfo);
Res = Addr.emitRawPointer(*this);
} else {
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@Cydox Cydox Oct 3, 2024

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should I add a check for StructBase->isLValue() and add an else statement that returns nullptr?

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@Cydox Cydox Oct 3, 2024

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added that extra check

LValue LV = EmitLValue(StructBase);
Address Addr = LV.getAddress();
Res = Addr.emitRawPointer(*this);
}

RecIndicesTy Indices;
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