[llvm] update_test_checks: add new --filter-all-after option (PR #129739)

[Florian Hahn via llvm-commits]

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@@ -0,0 +1,17 @@
+; RUN: opt < %s -S | FileCheck %s
+
+define i32 @func({i32, i32} %x, i32 %y, i1 %cond) {
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fhahn wrote:

Could you add a test with another function, to check that the filter applies per-function only?

https://github.com/llvm/llvm-project/pull/129739