Fix conditional barrier dynamic test

default.nix

@@ -45,7 +45,7 @@ llvmPackages.stdenv.mkDerivation (finalAttrs: {
   version = "nightly";
   inherit src;
 
-  patches = [ ./cmake-fix.patch ];
+  patches = [ ./cmake-fix.patch ./fix-cond-barrier-test.patch ];
 
   cmakeFlags = [
     # TODO: all these are broken when cross compiling. Upstream has refactored

fix-cond-barrier-test.patch

@@ -0,0 +1,49 @@
+Commit ID: 066a9b26b2f2d9036a762b859f59288687411ff5
+Change ID: vvstkqonluksmzmrwtwxqqrzlztylzyy
+Author   : Pekka Jääskeläinen <pekka.jaaskelainen@tuni.fi> (2025-12-08 14:10:29)
+Committer: Aleix Boné <aleix.boneribo@bsc.es> (2026-02-23 16:18:20)
+
+    Added missing validation file for conditional_barrier_dynamic
+
+    It is still flaky across LLVM versions so disabling it for now
+    on CPU/loopvec.
+
+diff --git a/tests/workgroup/cond_barriers_dynamic_1_16_1_1_loopvec.stdout b/tests/workgroup/cond_barriers_dynamic_1_16_1_1_loopvec.stdout
+new file mode 100644
+index 0000000000..ee2a07fa2d
+--- /dev/null
++++ b/tests/workgroup/cond_barriers_dynamic_1_16_1_1_loopvec.stdout
+@@ -0,0 +1,33 @@
++LOCAL_ID=0 before if
++LOCAL_ID=1 before if
++LOCAL_ID=2 before if
++LOCAL_ID=3 before if
++LOCAL_ID=4 before if
++LOCAL_ID=5 before if
++LOCAL_ID=6 before if
++LOCAL_ID=7 before if
++LOCAL_ID=8 before if
++LOCAL_ID=9 before if
++LOCAL_ID=10 before if
++LOCAL_ID=11 before if
++LOCAL_ID=12 before if
++LOCAL_ID=13 before if
++LOCAL_ID=14 before if
++LOCAL_ID=15 before if
++LOCAL_ID=0 inside if
++LOCAL_ID=1 inside if
++LOCAL_ID=2 inside if
++LOCAL_ID=3 inside if
++LOCAL_ID=4 inside if
++LOCAL_ID=5 inside if
++LOCAL_ID=6 inside if
++LOCAL_ID=7 inside if
++LOCAL_ID=8 inside if
++LOCAL_ID=9 inside if
++LOCAL_ID=10 inside if
++LOCAL_ID=11 inside if
++LOCAL_ID=12 inside if
++LOCAL_ID=13 inside if
++LOCAL_ID=14 inside if
++LOCAL_ID=15 inside if
++OK