[PATCH] D42032: [LLVM][PASSES][InstCombine] Fix (a + a + ...) / a cases

[David Majnemer via Phabricator via llvm-commits]

majnemer added inline comments.


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Comment at: lib/Analysis/InstructionSimplify.cpp:997-998
+  const APInt *C = nullptr;
+  if (((IsSigned && match(Op0, m_NSWShl(m_Value(X), m_APInt(C)))) ||
+      (!IsSigned && match(Op0, m_NUWShl(m_Value(X), m_APInt(C))))) && X == Op1)
+    return ConstantInt::get(X->getType(), APInt(C->getBitWidth(), 1).shl(*C));
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Instead of using `m_Value(X)` and `X == Op1`, just use `m_Specific(Op1)`


Repository:
  rL LLVM

https://reviews.llvm.org/D42032