[llvm] [LLVM] InstCount pass implemented when enabling stats (PR #171658)

[Arthur Eubanks via llvm-commits]

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@@ -0,0 +1,63 @@
+; RUN: opt -stats -passes=instcount < %s 2>&1 | FileCheck %s
+; RUN: opt -stats -O3 < %s 2>&1 | FileCheck %s
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aeubanks wrote:

should also add some of the other pipelines to double check they work, like `-passes='thinlto<O3>'`, `-O0`, `-passes='thinlto-pre-link<O2>'`, `-passes='lto<O1>'`, `-passes='lto-pre-link<Os>'`

https://github.com/llvm/llvm-project/pull/171658