[llvm] [msan] Add experimental '-msan-or-shadow-for-strict-instructions' flag to pessimize output (PR #128036)

[Thurston Dang via llvm-commits]

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@@ -0,0 +1,54 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
+; RUN: opt < %s -passes=msan -S                                         | FileCheck %s --check-prefixes=CLEAN
+; RUN: opt < %s -passes=msan -S -msan-or-shadow-for-strict-instructions | FileCheck %s --check-prefixes=OR-SHADOW
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thurstond wrote:

I've added recover mode test output.

(Though the conceptual no-op mode is actually the more useful mode so far.)

https://github.com/llvm/llvm-project/pull/128036