Remove uses of CanBeNegative() in HMod.

src/hydrogen-instructions.cc

Index: src/hydrogen-instructions.cc
diff --git a/src/hydrogen-instructions.cc b/src/hydrogen-instructions.cc
index 45112fad0648cb2c0c836ebabdf89a3a3949d1eb..2b64f89ab28f7228f4ec2cbad69e6435b4132de1 100644
--- a/src/hydrogen-instructions.cc
+++ b/src/hydrogen-instructions.cc
@@ -1865,6 +1865,10 @@ Range* HMod::InferRange(Zone* zone) {
     result->set_can_be_minus_zero(!CheckFlag(kAllUsesTruncatingToInt32) &&
                                   left_can_be_negative);
 
+    if (!a->CanBeNegative()) {
+      ClearFlag(HValue::kLeftCanBeNegative);
+    }
+
     if (!a->Includes(kMinInt) || !b->Includes(-1)) {
       ClearFlag(HValue::kCanOverflow);
     }