[CIR] Upstream cir.call with scalar arguments (llvm#136810)

This PR upstreams support for scalar arguments in `cir.call` operation.

Related to llvm#132487 .

Author: Lancern

clang/include/clang/CIR/Dialect/Builder/CIRBaseBuilder.h

@@ -215,14 +215,14 @@ class CIRBaseBuilderTy : public mlir::OpBuilder {
   //===--------------------------------------------------------------------===//
 
   cir::CallOp createCallOp(mlir::Location loc, mlir::SymbolRefAttr callee,
-                           mlir::Type returnType) {
-    auto op = create<cir::CallOp>(loc, callee, returnType);
-    return op;
+                           mlir::Type returnType, mlir::ValueRange operands) {
+    return create<cir::CallOp>(loc, callee, returnType, operands);
   }
 
-  cir::CallOp createCallOp(mlir::Location loc, cir::FuncOp callee) {
+  cir::CallOp createCallOp(mlir::Location loc, cir::FuncOp callee,
+                           mlir::ValueRange operands) {
     return createCallOp(loc, mlir::SymbolRefAttr::get(callee),
-                        callee.getFunctionType().getReturnType());
+                        callee.getFunctionType().getReturnType(), operands);
   }
 
   //===--------------------------------------------------------------------===//

clang/include/clang/CIR/Dialect/IR/CIRDialect.h

@@ -31,6 +31,7 @@
 #include "clang/CIR/Dialect/IR/CIROpsEnums.h"
 #include "clang/CIR/Interfaces/CIRLoopOpInterface.h"
 #include "clang/CIR/Interfaces/CIROpInterfaces.h"
+#include "clang/CIR/MissingFeatures.h"
 
 namespace mlir {
 namespace OpTrait {

clang/include/clang/CIR/Dialect/IR/CIROps.td

@@ -1769,6 +1769,13 @@ def FuncOp : CIR_Op<"func", [
        return getFunctionType().getReturnTypes();
     }
 
+    // TODO(cir): this should be an operand attribute, but for now we just hard-
+    // wire this as a function. Will later add a $no_proto argument to this op.
+    bool getNoProto() {
+      assert(!cir::MissingFeatures::opFuncNoProto());
+      return false;
+    }
+
     //===------------------------------------------------------------------===//
     // SymbolOpInterface Methods
     //===------------------------------------------------------------------===//
@@ -1789,6 +1796,41 @@ class CIR_CallOpBase<string mnemonic, list<Trait> extra_traits = []>
          !listconcat(extra_traits,
                      [DeclareOpInterfaceMethods<CIRCallOpInterface>,
                       DeclareOpInterfaceMethods<SymbolUserOpInterface>])> {
+  let extraClassDeclaration = [{
+    /// Get the argument operands to the called function.
+    mlir::OperandRange getArgOperands() {
+      return getArgs();
+    }
+
+    mlir::MutableOperandRange getArgOperandsMutable() {
+      return getArgsMutable();
+    }
+
+    /// Return the callee of this operation
+    mlir::CallInterfaceCallable getCallableForCallee() {
+      return (*this)->getAttrOfType<mlir::SymbolRefAttr>("callee");
+    }
+
+    /// Set the callee for this operation.
+    void setCalleeFromCallable(::mlir::CallInterfaceCallable callee) {
+      (*this)->setAttr(getCalleeAttrName(),
+                       mlir::cast<mlir::SymbolRefAttr>(callee));
+    }
+
+    mlir::ArrayAttr getArgAttrsAttr() { return {}; }
+    ::mlir::ArrayAttr getResAttrsAttr() { return {}; }
+
+    void setResAttrsAttr(::mlir::ArrayAttr attrs) {}
+    void setArgAttrsAttr(::mlir::ArrayAttr attrs) {}
+
+    ::mlir::Attribute removeArgAttrsAttr() { return {}; }
+    ::mlir::Attribute removeResAttrsAttr() { return {}; }
+
+    void setArg(unsigned index, mlir::Value value) {
+      setOperand(index, value);
+    }
+  }];
+
   let hasCustomAssemblyFormat = 1;
   let skipDefaultBuilders = 1;
   let hasVerifier = 0;
@@ -1798,7 +1840,8 @@ class CIR_CallOpBase<string mnemonic, list<Trait> extra_traits = []>
   // the upstreaming process moves on. The verifiers is also missing for now,
   // will add in the future.
 
-  dag commonArgs = (ins FlatSymbolRefAttr:$callee);
+  dag commonArgs = (ins FlatSymbolRefAttr:$callee,
+                        Variadic<CIR_AnyType>:$args);
 }
 
 def CallOp : CIR_CallOpBase<"call", [NoRegionArguments]> {
@@ -1819,7 +1862,9 @@ def CallOp : CIR_CallOpBase<"call", [NoRegionArguments]> {
   let arguments = commonArgs;
 
   let builders = [OpBuilder<(ins "mlir::SymbolRefAttr":$callee,
-                                 "mlir::Type":$resType), [{
+                                 "mlir::Type":$resType,
+                                 "mlir::ValueRange":$operands), [{
+      $_state.addOperands(operands);
       $_state.addAttribute("callee", callee);
       if (resType && !isa<VoidType>(resType))
         $_state.addTypes(resType);

clang/include/clang/CIR/Interfaces/CIROpInterfaces.td

@@ -21,9 +21,20 @@ let cppNamespace = "::cir" in {
   // The CIRCallOpInterface must be used instead of CallOpInterface when looking
   // at arguments and other bits of CallOp. This creates a level of abstraction
   // that's useful for handling indirect calls and other details.
-  def CIRCallOpInterface : OpInterface<"CIRCallOpInterface", []> {
+  def CIRCallOpInterface : OpInterface<"CIRCallOpInterface", [CallOpInterface]> {
     // Currently we don't have any methods defined in CIRCallOpInterface. We'll
     // add more methods as the upstreaming proceeds.
+    let methods = [
+      InterfaceMethod<
+          "Return the operand at index 'i', accounts for indirect call or "
+          "exception info",
+          "mlir::Value", "getArgOperand",
+          (ins "unsigned":$i)>,
+      InterfaceMethod<
+          "Return the number of operands, accounts for indirect call or "
+          "exception info",
+          "unsigned", "getNumArgOperands", (ins)>,
+    ];
   }
 
   def CIRGlobalValueInterface

clang/include/clang/CIR/MissingFeatures.h

@@ -72,11 +72,18 @@ struct MissingFeatures {
   static bool opFuncDsolocal() { return false; }
   static bool opFuncLinkage() { return false; }
   static bool opFuncVisibility() { return false; }
+  static bool opFuncNoProto() { return false; }
 
   // CallOp handling
   static bool opCallBuiltinFunc() { return false; }
   static bool opCallPseudoDtor() { return false; }
-  static bool opCallArgs() { return false; }
+  static bool opCallAggregateArgs() { return false; }
+  static bool opCallPaddingArgs() { return false; }
+  static bool opCallABIExtendArg() { return false; }
+  static bool opCallABIIndirectArg() { return false; }
+  static bool opCallWidenArg() { return false; }
+  static bool opCallBitcastArg() { return false; }
+  static bool opCallImplicitObjectSizeArgs() { return false; }
   static bool opCallReturn() { return false; }
   static bool opCallArgEvaluationOrder() { return false; }
   static bool opCallCallConv() { return false; }
@@ -90,6 +97,11 @@ struct MissingFeatures {
   static bool opCallAttrs() { return false; }
   static bool opCallSurroundingTry() { return false; }
   static bool opCallASTAttr() { return false; }
+  static bool opCallVariadic() { return false; }
+  static bool opCallObjCMethod() { return false; }
+  static bool opCallExtParameterInfo() { return false; }
+  static bool opCallCIRGenFuncInfoParamInfo() { return false; }
+  static bool opCallCIRGenFuncInfoExtParamInfo() { return false; }
 
   // ScopeOp handling
   static bool opScopeCleanupRegion() { return false; }
@@ -156,6 +168,7 @@ struct MissingFeatures {
   static bool emitCheckedInBoundsGEP() { return false; }
   static bool preservedAccessIndexRegion() { return false; }
   static bool bitfields() { return false; }
+  static bool msabi() { return false; }
   static bool typeChecks() { return false; }
   static bool lambdaFieldToName() { return false; }
   static bool targetSpecificCXXABI() { return false; }