Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/test/TableGen/HwModeSelect.td

@@ -0,0 +1,27 @@
+// RUN: not llvm-tblgen -gen-dag-isel -I %p/../../include %s 2>&1 | FileCheck %s
+
+// The HwModeSelect class is intended to serve as a base class for other
+// classes that are then used to select a value based on the HW mode.
+// It contains a list of HW modes, and a derived class should provide a
+// list of corresponding values.
+// These two lists must have the same size. Make sure that a violation of
+// this requirement is diagnosed.
+
+include "llvm/Target/Target.td"
+
+def TestTargetInstrInfo : InstrInfo;
+
+def TestTarget : Target {
+  let InstructionSet = TestTargetInstrInfo;
+}
+
+def TestReg : Register<"testreg">;
+def TestClass : RegisterClass<"TestTarget", [i32], 32, (add TestReg)>;
+
+def TestMode1 : HwMode<"+feat1">;
+def TestMode2 : HwMode<"+feat2">;
+
+def BadDef : ValueTypeByHwMode<[TestMode1, TestMode2, DefaultMode],
+                               [i8, i16, i32, i64]>;
+
+// CHECK: error: in record BadDef derived from HwModeSelect: the lists Modes and Objects should have the same size