[llvm] [OptBisect] Add support for selecting ranges of passes and refactor DebugCounter to use a shared Range API. (PR #152393)

[Nikita Popov via llvm-commits]

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+; Test that verifies functionality for -opt-bisect with range specifications
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+; Test basic range functionality: run passes 1-3 and 7-8
+; RUN: opt -O1 -opt-bisect=1-3,7-8 %s 2>&1 | FileCheck %s --check-prefix=CHECK-RANGES
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nikic wrote:

It would be better to replace `-O1` here with an explicit `-passes` list. This will save some poor person from updating this test when the O1 optimization pipeline changes.

https://github.com/llvm/llvm-project/pull/152393