[llvm] Add numerical sanitizer (PR #85916)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,113 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -mtriple=x86_64-linux-gnu -passes=nsan -nsan-shadow-type-mapping=dqq -S %s | FileCheck %s
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arsenm wrote:

This should go in test/Instrumentation/NumericalStabilitySanitizer/X86, or needs a REQUIRES: x86-registered-target 

https://github.com/llvm/llvm-project/pull/85916