More rodinia optimization

• Add option to const-inline to not inline collections.
• Add clean-up pass to predication to rewrite boolean selects to and/or ops.
• Misc. scheduling work on rodinia.

hercules_ir/src/ir.rs

@@ -1048,9 +1048,20 @@ impl Constant {
         }
     }
 
-    /*
-     * Useful for GVN.
-     */
+    pub fn is_false(&self) -> bool {
+        match self {
+            Constant::Boolean(false) => true,
+            _ => false,
+        }
+    }
+
+    pub fn is_true(&self) -> bool {
+        match self {
+            Constant::Boolean(true) => true,
+            _ => false,
+        }
+    }
+
     pub fn is_zero(&self) -> bool {
         match self {
             Constant::Integer8(0) => true,