[clang] [Clang][Driver] Add new flags to control IR verification (PR #68172)

[Nikita Popov via cfe-commits]

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@@ -146,6 +146,13 @@ Non-comprehensive list of changes in this release
 
 New Compiler Flags
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+* ``-fverify-intermediate-code`` and it's complement ``-fno-verify-intermediate-code``.
+  Enables or disables verification of the generated LLVM IR.
+  It's strongly encouraged to enable this verification, as it can catch hard to
+  find code generation bugs.
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nikic wrote:

This sentence makes no sense to me. End users certainly shouldn't run with enabled IR verification. Developers already use IR verification by dint of using an assertion-enabled build.

https://github.com/llvm/llvm-project/pull/68172