[llvm] e6c89e8 - [TableGen] Improve the error report of getElementAsRecord (#189302)

[via llvm-commits]

Author: Pengcheng Wang
Date: 2026-03-30T18:43:47+08:00
New Revision: e6c89e8d6ad779ac57b8b35f225f960757ef57d1

URL: https://github.com/llvm/llvm-project/commit/e6c89e8d6ad779ac57b8b35f225f960757ef57d1
DIFF: https://github.com/llvm/llvm-project/commit/e6c89e8d6ad779ac57b8b35f225f960757ef57d1.diff

LOG: [TableGen] Improve the error report of getElementAsRecord (#189302)

Added: 
    llvm/test/TableGen/intrinsic-arginfo-error.td

Modified: 
    llvm/lib/TableGen/Record.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/TableGen/Record.cpp b/llvm/lib/TableGen/Record.cpp
index 8ad20b45f5e16..4e931209e3e7c 100644
--- a/llvm/lib/TableGen/Record.cpp
+++ b/llvm/lib/TableGen/Record.cpp
@@ -768,7 +768,8 @@ const Init *ListInit::convertInitializerTo(const RecTy *Ty) const {
 const Record *ListInit::getElementAsRecord(unsigned Idx) const {
   const auto *DI = dyn_cast<DefInit>(getElement(Idx));
   if (!DI)
-    PrintFatalError("Expected record in list!");
+    PrintFatalError("expected record type for the element with index " +
+                    Twine(Idx) + " in list " + getAsString());
   return DI->getDef();
 }
 

diff  --git a/llvm/test/TableGen/intrinsic-arginfo-error.td b/llvm/test/TableGen/intrinsic-arginfo-error.td
new file mode 100644
index 0000000000000..a9d30b6bec05f
--- /dev/null
+++ b/llvm/test/TableGen/intrinsic-arginfo-error.td
@@ -0,0 +1,10 @@
+// RUN: not llvm-tblgen -gen-intrinsic-enums -I %p/../../include %s 2>&1 | FileCheck %s
+
+include "llvm/IR/Intrinsics.td"
+
+// CHECK: error: expected record type for the element with index 2 in list {{.*}}
+def int_test : DefaultAttrsIntrinsic<
+    [llvm_anyint_ty],
+    [llvm_anyint_ty,
+     LLVMMatchType<2>],
+    [IntrNoMem]>;