[clang] [Clang] Enable nsan instrumentation pass (PR #97359)

[Fangrui Song via cfe-commits]

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@@ -0,0 +1,7 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - -fsanitize=numerical %s | FileCheck %s
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MaskRay wrote:

remove `-unknown-unknown`

https://github.com/llvm/llvm-project/pull/97359