[InstCombine] computeKnownBitsMul - use KnownBits::isNonZero() helper.

Avoid an expensive isKnownNonZero() call - this is a small cleanup before moving the extra NSW functionality from computeKnownBitsMul into KnownBits::computeForMul.

1 files changed, 4 insertions, 4 deletions

diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
index 44cf4f8..db591ce 100644
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -436,10 +436,10 @@ static void computeKnownBitsMul(const Value *Op0, const Value *Op1, bool NSW,
       // The product of a negative number and a non-negative number is either
       // negative or zero.
       if (!isKnownNonNegative)
-        isKnownNegative = (isKnownNegativeOp1 && isKnownNonNegativeOp0 &&
-                           isKnownNonZero(Op0, Depth, Q)) ||
-                          (isKnownNegativeOp0 && isKnownNonNegativeOp1 &&
-                           isKnownNonZero(Op1, Depth, Q));
+        isKnownNegative =
+            (isKnownNegativeOp1 && isKnownNonNegativeOp0 &&
+             Known2.isNonZero()) ||
+            (isKnownNegativeOp0 && isKnownNonNegativeOp1 && Known.isNonZero());
     }
   }