[cost] Add FP test that has two control variables, but linear

Reviewed By: ezgicicek

Differential Revision: D23214286

fbshipit-source-id: b72e87c64

infer/tests/codetoanalyze/java/performance/Loops.java

@@ -157,4 +157,18 @@ public class Loops {
       p = p.getParent();
     }
   }
+
+  boolean rand;
+
+  void two_control_variables_linear_FP(int n) {
+    int i = 0;
+    int j = n;
+    while (i <= j) {
+      if (rand) {
+        i++;
+      } else {
+        j--;
+      }
+    }
+  }
 }

infer/tests/codetoanalyze/java/performance/cost-issues.exp

@@ -290,6 +290,7 @@ codetoanalyze/java/performance/Loops.java, codetoanalyze.java.performance.Loops.
 codetoanalyze/java/performance/Loops.java, codetoanalyze.java.performance.Loops.similar_linear(codetoanalyze.java.performance.Loops$C[],codetoanalyze.java.performance.Loops$C[]):boolean, 47 + 26 ⋅ x.length,  OnUIThread:false, [{x.length},Loop]
 codetoanalyze/java/performance/Loops.java, codetoanalyze.java.performance.Loops.string_concat_linear(java.lang.String,java.lang.String):void, 11 + 5 ⋅ (p.length + s.length) + 3 ⋅ (p.length + s.length + 1),  OnUIThread:false, [{p.length + s.length + 1},Loop,{p.length + s.length},Loop]
 codetoanalyze/java/performance/Loops.java, codetoanalyze.java.performance.Loops.string_length_linear(java.lang.String):void, 5 + 5 ⋅ s.length + 3 ⋅ (s.length + 1),  OnUIThread:false, [{s.length + 1},Loop,{s.length},Loop]
+codetoanalyze/java/performance/Loops.java, codetoanalyze.java.performance.Loops.two_control_variables_linear_FP(int):void, 7 + 13 ⋅ (n + 1)²,  OnUIThread:false, [{n + 1},Loop,{n + 1},Loop]
 codetoanalyze/java/performance/Loops.java, codetoanalyze.java.performance.Loops.unboundedSymbol_FP():void, ⊤,  OnUIThread:false, [Unbounded value x,Call to void Loops.loop_linear(int),Loop]
 codetoanalyze/java/performance/Loops.java, codetoanalyze.java.performance.Loops.zeropad_linear_FN(java.lang.String,java.lang.String):void, 18,  OnUIThread:false, []
 codetoanalyze/java/performance/MapTest.java, MapTest.<init>(), 3,  OnUIThread:false, []