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[CIR] Upstream UnaryDeref support for ComplexType #146757

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Merged
merged 1 commit into from
Jul 3, 2025
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Merged

[CIR] Upstream UnaryDeref support for ComplexType #146757

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5 changes: 5 additions & 0 deletions clang/lib/CIR/CodeGen/CIRGenExprComplex.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,7 @@ class ComplexExprEmitter : public StmtVisitor<ComplexExprEmitter, mlir::Value> {
mlir::Value VisitParenExpr(ParenExpr *e);
mlir::Value
VisitSubstNonTypeTemplateParmExpr(SubstNonTypeTemplateParmExpr *e);
mlir::Value VisitUnaryDeref(const Expr *e);
};
} // namespace

Expand Down Expand Up @@ -238,6 +239,10 @@ mlir::Value ComplexExprEmitter::VisitSubstNonTypeTemplateParmExpr(
return Visit(e->getReplacement());
}

mlir::Value ComplexExprEmitter::VisitUnaryDeref(const Expr *e) {
return emitLoadOfLValue(e);
}

LValue CIRGenFunction::emitComplexAssignmentLValue(const BinaryOperator *e) {
assert(e->getOpcode() == BO_Assign && "Expected assign op");

Expand Down
28 changes: 28 additions & 0 deletions clang/test/CIR/CodeGen/complex.cpp
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Expand Up @@ -626,3 +626,31 @@ void foo25() {
// OGCG: %[[INIT_IMAG_PTR:.*]] = getelementptr inbounds nuw { double, double }, ptr %[[INIT]], i32 0, i32 1
// OGCG: store double 1.000000e+00, ptr %[[INIT_REAL_PTR]], align 8
// OGCG: store double 2.000000e+00, ptr %[[INIT_IMAG_PTR]], align 8

void foo26(int _Complex* a) {
int _Complex b = *a;
}

// CIR: %[[COMPLEX_A_PTR:.*]] = cir.alloca !cir.ptr<!cir.complex<!s32i>>, !cir.ptr<!cir.ptr<!cir.complex<!s32i>>>, ["a", init]
// CIR: %[[COMPLEX_B:.*]] = cir.alloca !cir.complex<!s32i>, !cir.ptr<!cir.complex<!s32i>>, ["b", init]
// CIR: %[[COMPLEX_A:.*]] = cir.load deref {{.*}} %[[COMPLEX_A_PTR]] : !cir.ptr<!cir.ptr<!cir.complex<!s32i>>>, !cir.ptr<!cir.complex<!s32i>>
// CIR: %[[TMP:.*]] = cir.load{{.*}} %[[COMPLEX_A]] : !cir.ptr<!cir.complex<!s32i>>, !cir.complex<!s32i>
// CIR: cir.store{{.*}} %[[TMP]], %[[COMPLEX_B]] : !cir.complex<!s32i>, !cir.ptr<!cir.complex<!s32i>>

// LLVM: %[[COMPLEX_A_PTR:.*]] = alloca ptr, i64 1, align 8
// LLVM: %[[COMPLEX_B:.*]] = alloca { i32, i32 }, i64 1, align 4
// LLVM: %[[COMPLEX_A:.*]] = load ptr, ptr %[[COMPLEX_A_PTR]], align 8
// LLVM: %[[TMP:.*]] = load { i32, i32 }, ptr %[[COMPLEX_A]], align 4
// LLVM: store { i32, i32 } %[[TMP]], ptr %[[COMPLEX_B]], align 4

// OGCG: %[[COMPLEX_A_PTR:.*]] = alloca ptr, align 8
// OGCG: %[[COMPLEX_B:.*]] = alloca { i32, i32 }, align 4
// OGCG: %[[COMPLEX_A:.*]] = load ptr, ptr %[[COMPLEX_A_PTR]], align 8
// OGCG: %[[A_REAL_PTR:.*]] = getelementptr inbounds nuw { i32, i32 }, ptr %[[COMPLEX_A]], i32 0, i32 0
// OGCG: %[[A_REAL:.*]] = load i32, ptr %[[A_REAL_PTR]], align 4
// OGCG: %[[A_IMAG_PTR:.*]] = getelementptr inbounds nuw { i32, i32 }, ptr %[[COMPLEX_A]], i32 0, i32 1
// OGCG: %[[A_IMAG:.*]] = load i32, ptr %[[A_IMAG_PTR]], align 4
// OGCG: %[[B_REAL_PTR:.*]] = getelementptr inbounds nuw { i32, i32 }, ptr %[[COMPLEX_B]], i32 0, i32 0
// OGCG: %[[B_IMAG_PTR:.*]] = getelementptr inbounds nuw { i32, i32 }, ptr %[[COMPLEX_B]], i32 0, i32 1
// OGCG: store i32 %[[A_REAL]], ptr %[[B_REAL_PTR]], align 4
// OGCG: store i32 %[[A_IMAG]], ptr %[[B_IMAG_PTR]], align 4