[llvm] [X86] Fix RegAlloc issue by implementing TRI::getCustomEHPadPreservedMask (PR #135518)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,76 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=x86_64 -exception-model=sjlj -o - %s | FileCheck %s
+
+declare dso_local i32 @__gxx_personality_sj0(...)
+declare dso_local preserve_allcc void @foo(ptr)
+
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arsenm wrote:

Comment the test, with something like your above comment 

https://github.com/llvm/llvm-project/pull/135518