The canonical way to XFAIL a test for all targets is XFAIL: *, not XFAIL:

Fix the lit bug that enabled this "feature" (empty triple is substring
of all possible target triples) and change the two outliers to use the
documented * syntax.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259799 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/Hexagon/struct_args_large.ll

@@ -1,4 +1,4 @@
-; XFAIL:
+; XFAIL: *
 ; RUN: llc -march=hexagon < %s | FileCheck %s
 ; CHECK: r[[T0:[0-9]+]] = CONST32(#s2)
 ; CHECK: memw(r29+#0) = r{{.}}

test/Transforms/Util/MemorySSA/load-invariant.ll

@@ -1,4 +1,4 @@
-; XFAIL:
+; XFAIL: *
 ; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s
 ;
 ; Invariant loads should be considered live on entry, because, once the

utils/lit/lit/Test.py

@@ -230,7 +230,7 @@ class Test:
                 return True
 
             # If this is a part of the target triple, it fails.
-            if item in self.suite.config.target_triple:
+            if item and item in self.suite.config.target_triple:
                 return True
 
         return False