[clang] [llvm] [RISCV] Implement Clang Builtins for XCValu Extension in CV32E40P (PR #100684)

[Craig Topper via llvm-commits]

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@@ -21901,6 +21901,30 @@ Value *CodeGenFunction::EmitHexagonBuiltinExpr(unsigned BuiltinID,
   return nullptr;
 }
 
+static Value *EmitXCVIntrinsic(CodeGenFunction &CGF, unsigned BuiltinID,
+                               unsigned IntrinsicID,
+                               MutableArrayRef<Value *> Ops,
+                               const CallExpr *E) {
+  llvm::Type *MachineType =
+      llvm::IntegerType::getInt32Ty(CGF.CGM.getLLVMContext());
+  for (unsigned i = 0, e = E->getNumArgs(); i != e; i++) {
+    if (Ops[i]->getType() != MachineType) {
+      QualType type = E->getArg(i)->getType();
+      assert((type->isSignedIntegerType() || type->isUnsignedIntegerType() ||
+              type->isPointerType()) &&
+             "Argument of Core-V builtin must have signed or unsigned integer "
+             "or Pointer type");
+      if (type->isSignedIntegerType()) {
+        Ops[i] = CGF.Builder.CreateSExt(Ops[i], MachineType);
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topperc wrote:

Why aren't the builtins declared to take the MachineType so that the cast will be done automatically?

https://github.com/llvm/llvm-project/pull/100684