1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
index ac64671725f..04f03844ea6 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
@@ -1443,6 +1443,16 @@ Instruction *InstCombiner::visitFDiv(BinaryOperator &I) {
     }
   }
 
+  Value *LHS;
+  Value *RHS;
+
+  // -x / -y -> x / y
+  if (match(Op0, m_FNeg(m_Value(LHS))) && match(Op1, m_FNeg(m_Value(RHS)))) {
+    I.setOperand(0, LHS);
+    I.setOperand(1, RHS);
+    return &I;
+  }
+
   return nullptr;
 }