[clang codegen] fix crash emitting __array_rank

clang/docs/ReleaseNotes.rst

@@ -439,6 +439,7 @@ Bug Fixes in This Version
 - Fixed a crash when trying to transform a dependent address space type. Fixes #GH101685.
 - Fixed a crash when diagnosing format strings and encountering an empty
   delimited escape sequence (e.g., ``"\o{}"``). #GH102218
+- Fixed a crash using ``__array_rank`` on 64-bit targets. (#GH113044).
 - The warning emitted for an unsupported register variable type now points to
   the unsupported type instead of the ``register`` keyword (#GH109776).
 

clang/lib/CodeGen/CGExprScalar.cpp

@@ -722,7 +722,7 @@ class ScalarExprEmitter
   }
 
   Value *VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *E) {
-    return llvm::ConstantInt::get(Builder.getInt32Ty(), E->getValue());
+    return llvm::ConstantInt::get(ConvertType(E->getType()), E->getValue());
   }
 
   Value *VisitExpressionTraitExpr(const ExpressionTraitExpr *E) {

clang/test/CodeGen/builtins-array-rank.cpp

@@ -0,0 +1,6 @@
+// RUN: %clang_cc1 -triple aarch64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
+
+unsigned long array_rank_binary_operator(void) {
+  // CHECK: ret i64 3
+  return __array_rank(int[10]) | 2;
+}