[llvm] [ValueTracking] Handle trunc to i1 as condition in dominating condition. (PR #126414)

[Yingwei Zheng via llvm-commits]

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@@ -10272,6 +10288,9 @@ void llvm::findValuesAffectedByCondition(
                                                            m_Value()))) {
       // Handle patterns that computeKnownFPClass() support.
       AddAffected(A);
+    } else if (!IsAssume && match(V, m_CombineOr(m_Trunc(m_Value(X)),
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dtcxzyw wrote:

Is `!IsAssume` used to avoid issues with ephemeral values? If so, please add some comments here.


https://github.com/llvm/llvm-project/pull/126414