[CIR] Support ComplexType in CallExpr args (llvm#156236)

This change adds support for ComplexType in the CallExpr args

Issue: llvm#141365

Author: AmrDeveloper

clang/lib/CIR/CodeGen/CIRGenCall.cpp

@@ -522,7 +522,8 @@ RValue CIRGenFunction::emitCall(const CIRGenFunctionInfo &funcInfo,
     assert(!cir::MissingFeatures::opCallPaddingArgs());
 
     mlir::Type argType = convertType(canQualArgType);
-    if (!mlir::isa<cir::RecordType>(argType)) {
+    if (!mlir::isa<cir::RecordType>(argType) &&
+        !mlir::isa<cir::ComplexType>(argType)) {
       mlir::Value v;
       if (arg.isAggregate())
         cgm.errorNYI(loc, "emitCall: aggregate call argument");
@@ -540,15 +541,16 @@ RValue CIRGenFunction::emitCall(const CIRGenFunctionInfo &funcInfo,
       cirCallArgs[argNo] = v;
     } else {
       Address src = Address::invalid();
-      if (!arg.isAggregate())
-        cgm.errorNYI(loc, "emitCall: non-aggregate call argument");
-      else
+      if (!arg.isAggregate()) {
+        src = createMemTemp(arg.ty, loc, "coerce");
+        arg.copyInto(*this, src, loc);
+      } else {
         src = arg.hasLValue() ? arg.getKnownLValue().getAddress()
                               : arg.getKnownRValue().getAggregateAddress();
+      }
 
       // Fast-isel and the optimizer generally like scalar values better than
       // FCAs, so we flatten them if this is safe to do for this argument.
-      auto argRecordTy = cast<cir::RecordType>(argType);
       mlir::Type srcTy = src.getElementType();
       // FIXME(cir): get proper location for each argument.
       mlir::Location argLoc = loc;
@@ -564,7 +566,7 @@ RValue CIRGenFunction::emitCall(const CIRGenFunctionInfo &funcInfo,
       // uint64_t DstSize = CGM.getDataLayout().getTypeAllocSize(STy);
       // if (SrcSize < DstSize) {
       assert(!cir::MissingFeatures::dataLayoutTypeAllocSize());
-      if (srcTy != argRecordTy) {
+      if (srcTy != argType) {
         cgm.errorNYI(loc, "emitCall: source type does not match argument type");
       } else {
         // FIXME(cir): this currently only runs when the types are exactly the
@@ -676,6 +678,18 @@ RValue CIRGenFunction::emitCall(const CIRGenFunctionInfo &funcInfo,
   llvm_unreachable("Invalid evaluation kind");
 }
 
+void CallArg::copyInto(CIRGenFunction &cgf, Address addr,
+                       mlir::Location loc) const {
+  LValue dst = cgf.makeAddrLValue(addr, ty);
+  if (!hasLV && rv.isScalar())
+    cgf.cgm.errorNYI(loc, "copyInto scalar value");
+  else if (!hasLV && rv.isComplex())
+    cgf.emitStoreOfComplex(loc, rv.getComplexValue(), dst, /*isInit=*/true);
+  else
+    cgf.cgm.errorNYI(loc, "copyInto hasLV");
+  isUsed = true;
+}
+
 void CIRGenFunction::emitCallArg(CallArgList &args, const clang::Expr *e,
                                  clang::QualType argType) {
   assert(argType->isReferenceType() == e->isGLValue() &&

clang/lib/CIR/CodeGen/CIRGenCall.h

@@ -224,6 +224,8 @@ struct CallArg {
   }
 
   bool isAggregate() const { return hasLV || rv.isAggregate(); }
+
+  void copyInto(CIRGenFunction &cgf, Address addr, mlir::Location loc) const;
 };
 
 class CallArgList : public llvm::SmallVector<CallArg, 8> {

clang/test/CIR/CodeGen/complex.cpp

@@ -1311,3 +1311,49 @@ void real_on_scalar_from_imag_with_type_promotion() {
 // OGCG: %[[A_IMAG_F32:.*]] = fpext half %[[A_IMAG]] to float
 // OGCG: %[[A_IMAG_F16:.*]] = fptrunc float %[[A_IMAG_F32]] to half
 // OGCG: store half %[[A_IMAG_F16]], ptr %[[B_ADDR]], align 2
+
+void complex_type_parameter(float _Complex a) {}
+
+// CIR: %[[A_ADDR:.*]] = cir.alloca !cir.complex<!cir.float>, !cir.ptr<!cir.complex<!cir.float>>, ["a", init]
+// CIR: cir.store %{{.*}}, %[[A_ADDR]] : !cir.complex<!cir.float>, !cir.ptr<!cir.complex<!cir.float>>
+
+// TODO(CIR): the difference between the CIR LLVM and OGCG is because the lack of calling convention lowering,
+// Test will be updated when that is implemented
+
+// LLVM: %[[A_ADDR:.*]] = alloca { float, float }, i64 1, align 4
+// LLVM: store { float, float } %{{.*}}, ptr %[[A_ADDR]], align 4
+
+// OGCG: %[[A_ADDR:.*]] = alloca { float, float }, align 4
+// OGCG: store <2 x float> %a.coerce, ptr %[[A_ADDR]], align 4
+
+void complex_type_argument() {
+  float _Complex a;
+  complex_type_parameter(a);
+}
+
+// CIR: %[[A_ADDR:.*]] = cir.alloca !cir.complex<!cir.float>, !cir.ptr<!cir.complex<!cir.float>>, ["a"]
+// CIR: %[[ARG_ADDR:.*]] = cir.alloca !cir.complex<!cir.float>, !cir.ptr<!cir.complex<!cir.float>>, ["coerce"]
+// CIR: %[[TMP_A:.*]] = cir.load{{.*}} %[[A_ADDR]] : !cir.ptr<!cir.complex<!cir.float>>, !cir.complex<!cir.float>
+// CIR: cir.store{{.*}} %[[TMP_A]], %[[ARG_ADDR]] : !cir.complex<!cir.float>, !cir.ptr<!cir.complex<!cir.float>>
+// CIR: %[[TMP_ARG:.*]] = cir.load{{.*}} %[[ARG_ADDR]] : !cir.ptr<!cir.complex<!cir.float>>, !cir.complex<!cir.float>
+// CIR: cir.call @_Z22complex_type_parameterCf(%[[TMP_ARG]]) : (!cir.complex<!cir.float>) -> ()
+
+// LLVM: %[[A_ADDR:.*]] = alloca { float, float }, i64 1, align 4
+// LLVM: %[[ARG_ADDR:.*]] = alloca { float, float }, i64 1, align 4
+// LLVM: %[[TMP_A:.*]] = load { float, float }, ptr %[[A_ADDR]], align 4
+// LLVM: store { float, float } %[[TMP_A]], ptr %[[ARG_ADDR]], align 4
+// LLVM: %[[TMP_ARG:.*]] = load { float, float }, ptr %[[ARG_ADDR]], align 4
+// LLVM: call void @_Z22complex_type_parameterCf({ float, float } %[[TMP_ARG]])
+
+// OGCG: %[[A_ADDR:.*]] = alloca { float, float }, align 4
+// OGCG: %[[ARG_ADDR:.*]] = alloca { float, float }, align 4
+// OGCG: %[[A_REAL_PTR:.*]] = getelementptr inbounds nuw { float, float }, ptr %[[A_ADDR]], i32 0, i32 0
+// OGCG: %[[A_REAL:.*]] = load float, ptr %[[A_REAL_PTR]], align 4
+// OGCG: %[[A_IMAG_PTR:.*]] = getelementptr inbounds nuw { float, float }, ptr %[[A_ADDR]], i32 0, i32 1
+// OGCG: %[[A_IMAG:.*]] = load float, ptr %[[A_IMAG_PTR]], align 4
+// OGCG: %[[ARG_REAL_PTR:.*]] = getelementptr inbounds nuw { float, float }, ptr %[[ARG_ADDR]], i32 0, i32 0
+// OGCG: %[[ARG_IMAG_PTR:.*]] = getelementptr inbounds nuw { float, float }, ptr %[[ARG_ADDR]], i32 0, i32 1
+// OGCG: store float %[[A_REAL]], ptr %[[ARG_REAL_PTR]], align 4
+// OGCG: store float %[[A_IMAG]], ptr %[[ARG_IMAG_PTR]], align 4
+// OGCG: %[[TMP_ARG:.*]] = load <2 x float>, ptr %[[ARG_ADDR]], align 4
+// OGCG: call void @_Z22complex_type_parameterCf(<2 x float> noundef %[[TMP_ARG]])