================
@@ -21,20 +20,526 @@
#include "clang/AST/APValue.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Attr.h"
+#include "clang/AST/CharUnits.h"
#include "clang/AST/OperationKinds.h"
#include "clang/AST/RecordLayout.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/Basic/Builtins.h"
-#include "clang/Basic/Specifiers.h"
#include "clang/CIR/Dialect/IR/CIRAttrs.h"
#include "clang/CIR/Dialect/IR/CIRTypes.h"
+#include "clang/CIR/MissingFeatures.h"
#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/Sequence.h"
#include "llvm/Support/ErrorHandling.h"
+#include <iterator>
using namespace clang;
using namespace clang::CIRGen;
+//===----------------------------------------------------------------------===//
+// ConstantAggregateBuilder
+//===----------------------------------------------------------------------===//
+
+namespace {
+class ConstExprEmitter;
+
+static mlir::TypedAttr computePadding(CIRGenModule &cgm, CharUnits size) {
+ mlir::Type eltTy = cgm.UCharTy;
+ clang::CharUnits::QuantityType arSize = size.getQuantity();
+ CIRGenBuilderTy &bld = cgm.getBuilder();
+ if (size > CharUnits::One()) {
+ SmallVector<mlir::Attribute, 4> elts(arSize, cir::ZeroAttr::get(eltTy));
+ return bld.getConstArray(mlir::ArrayAttr::get(bld.getContext(), elts),
+ cir::ArrayType::get(eltTy, arSize));
+ }
+
+ return cir::ZeroAttr::get(eltTy);
+}
+
+static mlir::Attribute
+emitArrayConstant(CIRGenModule &cgm, mlir::Type desiredType,
+ mlir::Type commonElementType, unsigned arrayBound,
+ SmallVectorImpl<mlir::TypedAttr> &elements,
+ mlir::TypedAttr filler);
+
+struct ConstantAggregateBuilderUtils {
+ CIRGenModule &cgm;
+ cir::CIRDataLayout dataLayout;
+
+ ConstantAggregateBuilderUtils(CIRGenModule &cgm)
+ : cgm(cgm), dataLayout{cgm.getModule()} {}
+
+ CharUnits getAlignment(const mlir::TypedAttr c) const {
+ return CharUnits::fromQuantity(
+ dataLayout.getAlignment(c.getType(), /*abiOrPref=*/true));
+ }
+
+ CharUnits getSize(mlir::Type ty) const {
+ return CharUnits::fromQuantity(dataLayout.getTypeAllocSize(ty));
+ }
+
+ CharUnits getSize(const mlir::TypedAttr c) const {
+ return getSize(c.getType());
+ }
+
+ mlir::TypedAttr getPadding(CharUnits size) const {
+ return computePadding(cgm, size);
+ }
+};
+
+/// Incremental builder for an mlir::TypedAttr holding a record or array
+/// constant.
+class ConstantAggregateBuilder : private ConstantAggregateBuilderUtils {
+ /// The elements of the constant. These two arrays must have the same size;
+ /// Offsets[i] describes the offset of Elems[i] within the constant. The
----------------
andykaylor wrote:
```suggestion
/// offsets[i] describes the offset of elems[i] within the constant. The
```
https://github.com/llvm/llvm-project/pull/155663
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