return CGF.Builder.CreateStructGEP(base, idx, field->getName());
}
-static Address emitPreserveStructAccess(CodeGenFunction &CGF, Address base,
- const FieldDecl *field) {
+static Address emitPreserveStructAccess(CodeGenFunction &CGF, LValue base,
+ Address addr, const FieldDecl *field) {
const RecordDecl *rec = field->getParent();
- llvm::DIType *DbgInfo = CGF.getDebugInfo()->getOrCreateRecordType(
- CGF.getContext().getRecordType(rec), rec->getLocation());
+ llvm::DIType *DbgInfo = CGF.getDebugInfo()->getOrCreateStandaloneType(
+ base.getType(), rec->getLocation());
unsigned idx =
CGF.CGM.getTypes().getCGRecordLayout(rec).getLLVMFieldNo(field);
return CGF.Builder.CreatePreserveStructAccessIndex(
- base, idx, CGF.getDebugInfoFIndex(rec, field->getFieldIndex()), DbgInfo);
+ addr, idx, CGF.getDebugInfoFIndex(rec, field->getFieldIndex()), DbgInfo);
}
static bool hasAnyVptr(const QualType Type, const ASTContext &Context) {
if (IsInPreservedAIRegion ||
(getDebugInfo() && rec->hasAttr<BPFPreserveAccessIndexAttr>())) {
// Remember the original union field index
- llvm::DIType *DbgInfo = getDebugInfo()->getOrCreateRecordType(
- getContext().getRecordType(rec), rec->getLocation());
+ llvm::DIType *DbgInfo = getDebugInfo()->getOrCreateStandaloneType(base.getType(),
+ rec->getLocation());
addr = Address(
Builder.CreatePreserveUnionAccessIndex(
addr.getPointer(), getDebugInfoFIndex(rec, field->getFieldIndex()), DbgInfo),
addr = emitAddrOfFieldStorage(*this, addr, field);
else
// Remember the original struct field index
- addr = emitPreserveStructAccess(*this, addr, field);
+ addr = emitPreserveStructAccess(*this, base, addr, field);
}
// If this is a reference field, load the reference right now.
--- /dev/null
+// REQUIRES: bpf-registered-target
+// RUN: %clang -target bpf -emit-llvm -S -g %s -o - | FileCheck %s
+
+#pragma clang attribute push (__attribute__((preserve_access_index)), apply_to = record)
+typedef struct {
+ int a;
+} __t;
+typedef union {
+ int b;
+} __u;
+#pragma clang attribute pop
+
+int test1(__t *arg) { return arg->a; }
+int test2(const __u *arg) { return arg->b; }
+
+
+// CHECK: define dso_local i32 @test1
+// CHECK: call i32* @llvm.preserve.struct.access.index.p0i32.p0s_struct.__ts(%struct.__t* %{{[0-9a-z]+}}, i32 0, i32 0), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[TYPEDEF_STRUCT:[0-9]+]]
+// CHECK: define dso_local i32 @test2
+// CHECK: call %union.__u* @llvm.preserve.union.access.index.p0s_union.__us.p0s_union.__us(%union.__u* %{{[0-9a-z]+}}, i32 0), !dbg !{{[0-9]+}}, !llvm.preserve.access.index ![[CONST_TYPEDEF:[0-9]+]]
+//
+// CHECK: ![[TYPEDEF_STRUCT]] = !DIDerivedType(tag: DW_TAG_typedef, name: "__t"
+// CHECK: ![[CONST_TYPEDEF]] = !DIDerivedType(tag: DW_TAG_const_type, baseType: ![[TYPEDEF_UNION:[0-9]+]]
+// CHECK: ![[TYPEDEF_UNION]] = !DIDerivedType(tag: DW_TAG_typedef, name: "__u"