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[CIR] Implement DesignatedInitUpdateExpr for AggregateExpr #161897

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Merged
merged 2 commits into from
Oct 5, 2025
Merged

[CIR] Implement DesignatedInitUpdateExpr for AggregateExpr #161897

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f26cf54
[CIR] Implement DesignatedInitUpdateExpr for AggregateExpr
AmrDeveloper Oct 3, 2025
253f122
Merge branch 'main' into cir_designated_init_update_expr
AmrDeveloper Oct 5, 2025
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6 changes: 4 additions & 2 deletions clang/lib/CIR/CodeGen/CIRGenExprAggregate.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -201,8 +201,10 @@ class AggExprEmitter : public StmtVisitor<AggExprEmitter> {
}

void VisitDesignatedInitUpdateExpr(DesignatedInitUpdateExpr *e) {
cgf.cgm.errorNYI(e->getSourceRange(),
"AggExprEmitter: VisitDesignatedInitUpdateExpr");
AggValueSlot dest = ensureSlot(cgf.getLoc(e->getExprLoc()), e->getType());
LValue destLV = cgf.makeAddrLValue(dest.getAddress(), e->getType());
emitInitializationToLValue(e->getBase(), destLV);
VisitInitListExpr(e->getUpdater());
}
void VisitAbstractConditionalOperator(const AbstractConditionalOperator *e) {
cgf.cgm.errorNYI(e->getSourceRange(),
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33 changes: 33 additions & 0 deletions clang/test/CIR/CodeGen/struct.cpp
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Expand Up @@ -184,6 +184,39 @@ void generic_selection() {
// OGCG: %[[D_ADDR:.*]] = alloca %struct.CompleteS, align 4
// OGCG: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %[[D_ADDR]], ptr align 4 %[[A_ADDR]], i64 8, i1 false)

void designated_init_update_expr() {
CompleteS a;

struct Container {
CompleteS c;
} b = {a, .c.a = 1};
}

// CIR: %[[A_ADDR:.*]] = cir.alloca !rec_CompleteS, !cir.ptr<!rec_CompleteS>, ["a"]
// CIR: %[[B_ADDR:.*]] = cir.alloca !rec_Container, !cir.ptr<!rec_Container>, ["b", init]
// CIR: %[[C_ADDR:.*]] = cir.get_member %[[B_ADDR]][0] {name = "c"} : !cir.ptr<!rec_Container> -> !cir.ptr<!rec_CompleteS>
// CIR: cir.call @_ZN9CompleteSC1ERKS_(%2, %[[A_ADDR]]) nothrow : (!cir.ptr<!rec_CompleteS>, !cir.ptr<!rec_CompleteS>) -> ()
// CIR: %[[ELEM_0_PTR:.*]] = cir.get_member %[[C_ADDR]][0] {name = "a"} : !cir.ptr<!rec_CompleteS> -> !cir.ptr<!s32i>
// CIR: %[[CONST_1:.*]] = cir.const #cir.int<1> : !s32i
// CIR: cir.store{{.*}} %[[CONST_1]], %[[ELEM_0_PTR]] : !s32i, !cir.ptr<!s32i>
// CIR: %[[ELEM_1_PTR:.*]] = cir.get_member %[[C_ADDR]][1] {name = "b"} : !cir.ptr<!rec_CompleteS> -> !cir.ptr<!s8i>

// LLVM: %[[A_ADDR:.*]] = alloca %struct.CompleteS, i64 1, align 4
// LLVM: %[[B_ADDR:.*]] = alloca %struct.Container, i64 1, align 4
// LLVM: %[[C_ADDR:.*]] = getelementptr %struct.Container, ptr %[[B_ADDR]], i32 0, i32 0
// LLVM: call void @_ZN9CompleteSC1ERKS_(ptr %[[C_ADDR]], ptr %[[A_ADDR]])
// LLVM: %[[ELEM_0_PTR:.*]] = getelementptr %struct.CompleteS, ptr %[[C_ADDR]], i32 0, i32 0
// LLVM: store i32 1, ptr %[[ELEM_0_PTR]], align 4
// LLVM: %[[ELEM_1_PTR:.*]] = getelementptr %struct.CompleteS, ptr %[[C_ADDR]], i32 0, i32 1

// OGCG: %[[A_ADDR:.*]] = alloca %struct.CompleteS, align 4
// OGCG: %[[B_ADDR:.*]] = alloca %struct.Container, align 4
// OGCG: %[[C_ADDR:.*]] = getelementptr inbounds nuw %struct.Container, ptr %[[B_ADDR]], i32 0, i32 0
// OGCG: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %[[C_ADDR]], ptr align 4 %[[A_ADDR]], i64 8, i1 false)
// OGCG: %[[ELEM_0_PTR:.*]] = getelementptr inbounds nuw %struct.CompleteS, ptr %[[C_ADDR]], i32 0, i32 0
// OGCG: store i32 1, ptr %[[ELEM_0_PTR]], align 4
// OGCG: %[[ELEM_1_PTR:.*]] = getelementptr inbounds nuw %struct.CompleteS, ptr %[[C_ADDR]], i32 0, i32 1

void atomic_init() {
_Atomic CompleteS a;
__c11_atomic_init(&a, {});
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