[llvm] [GlobalISel] Introduce LLT:token() as a special scalar type (PR #85189)

[Matt Arsenault via llvm-commits]

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@@ -300,6 +321,7 @@ TEST(LowLevelTypeTest, Invalid) {
   ASSERT_FALSE(Ty.isScalar());
   ASSERT_FALSE(Ty.isPointer());
   ASSERT_FALSE(Ty.isVector());
+  ASSERT_FALSE(Ty.isToken());
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arsenm wrote:

This test should be separately fixed to consistently use EXPECT_*

https://github.com/llvm/llvm-project/pull/85189