[PATCH] D22477: [InstCombine] fold add(zext(xor X, C), C) --> sext X when C is INT_MIN in the source type

[David Majnemer via llvm-commits]

majnemer added inline comments.

================
Comment at: lib/Transforms/InstCombine/InstCombineAddSub.cpp:1054
@@ +1053,3 @@
+    const APInt *C;
+    if (match(LHS, m_OneUse(m_ZExt(m_OneUse(m_Xor(m_Value(X), m_APInt(C)))))) &&
+        C->isMinSignedValue() &&
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Why `m_OneUse` ?


https://reviews.llvm.org/D22477