[llvm] [InstCombine] Replace all dominated uses of condition with constants (PR #105510)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> It may be worthwhile to add a PhaseOrdering test that demonstrates why doing this in InstCombine is useful.

See llvm/test/Transforms/PhaseOrdering/branch-dom-cond.ll. It is extracted from bullet3 (function `btHashMap<btHashPtr, char const*>::growTables(btHashPtr const&)`).


https://github.com/llvm/llvm-project/pull/105510