Feature flag for tests broken by opaque pointers

test/k-rule-apply/definition.kore

@@ -1,3 +1,4 @@
+// XFAIL: opaque-pointers
 // RUN: %kompile %s c
 // RUN: %apply-rule %S TEST.testArray %input-dir/`basename %S`/foo_Array_Success.in %S/definition.o | diff - %output-dir/`basename %S`/foo_Array_Success.out.diff
 // RUN: %apply-rule %S TEST.testArray %input-dir/`basename %S`/foo_Array_Fail.in %S/definition.o | diff - %output-dir/`basename %S`/foo_Array_Fail.out.diff

test/lit.cfg.py

@@ -1,8 +1,17 @@
 import glob
 import os
+import subprocess
 
 from lit import formats
 
+def llvm_major_version():
+    result = subprocess.run(['llvm-backend-version', '--llvm'], capture_output=True)
+    if result.returncode != 0:
+        raise RuntimeError('Failed to get LLVM package version')
+
+    major, _, _ = result.stdout.decode('utf-8').strip().split('.')
+    return int(major)
+
 ROOT_PATH = os.path.realpath(os.path.join(
     os.path.dirname(os.path.realpath(__file__)), ".."))
 
@@ -39,6 +48,9 @@
     'test_bindings.py'
 ]
 
+if llvm_major_version() >= 16:
+    config.available_features.add('opaque-pointers')
+
 # When lit is launched, it doesn't inherit any environment variables from the
 # parent process' environment. This breaks the Nix derivations for the host
 # compiler and linker, as they depend on NIX_* environment variables being set.

tools/llvm-backend-version/version.cpp

@@ -1,7 +1,23 @@
 #include "version.inc"
 
-#include <cstdio>
+#include <llvm/Support/CommandLine.h>
+#include <llvm/Support/raw_ostream.h>
 
-int main() {
-  printf("%s\n", llvm_backend_version);
+using namespace llvm;
+
+cl::OptionCategory VersionCat("kprint options");
+
+cl::opt<bool> LLVMVersion(
+    "llvm", cl::desc("Print LLVM version rather than backend version"),
+    cl::cat(VersionCat));
+
+int main(int argc, char **argv) {
+  cl::HideUnrelatedOptions({&VersionCat});
+  cl::ParseCommandLineOptions(argc, argv);
+
+  if (LLVMVersion) {
+    llvm::outs() << llvm_version << '\n';
+  } else {
+    llvm::outs() << llvm_backend_version << '\n';
+  }
 }

tools/llvm-backend-version/version.inc.in

@@ -1 +1,2 @@
 static const char llvm_backend_version[] = "@LLVM_BACKEND_VERSION@";
+static const char llvm_version[] = "@LLVM_PACKAGE_VERSION@";