Removed useless traits for IntPredicate and RealPredicate

Author: denismerigoux

src/librustc_codegen_llvm/builder.rs

@@ -691,7 +691,7 @@ impl BuilderMethods<'a, 'll, 'tcx, Value, BasicBlock>
     /* Comparisons */
     fn icmp(&self, op: traits::IntPredicate, lhs: &'ll Value, rhs: &'ll Value) -> &'ll Value {
         self.count_insn("icmp");
-        let op : llvm::IntPredicate = traits::IntPredicateMethods::convert_to_backend_specific(op);
+        let op = llvm::IntPredicate::from_generic(op);
         unsafe {
             llvm::LLVMBuildICmp(self.llbuilder, op as c_uint, lhs, rhs, noname())
         }

src/librustc_codegen_llvm/llvm/ffi.rs

@@ -142,8 +142,8 @@ pub enum IntPredicate {
     IntSLE = 41,
 }
 
-impl traits::IntPredicateMethods for IntPredicate {
-    fn convert_to_backend_specific(intpre: traits::IntPredicate) -> Self {
+impl IntPredicate {
+    pub fn from_generic(intpre: traits::IntPredicate) -> Self {
         match intpre {
             traits::IntPredicate::IntEQ => IntPredicate::IntEQ,
             traits::IntPredicate::IntNE => IntPredicate::IntNE,
@@ -181,8 +181,8 @@ pub enum RealPredicate {
     RealPredicateTrue = 15,
 }
 
-impl traits::RealPredicateMethods for RealPredicate {
-    fn convert_to_backend_specific(realpred: traits::RealPredicate) -> Self {
+impl RealPredicate {
+    pub fn from_generic(realpred: traits::RealPredicate) -> Self {
         match realpred {
             traits::RealPredicate::RealPredicateFalse => RealPredicate::RealPredicateFalse,
             traits::RealPredicate::RealOEQ => RealPredicate::RealOEQ,

src/librustc_codegen_llvm/traits.rs

@@ -34,10 +34,6 @@ pub enum IntPredicate {
     IntSLE,
 }
 
-pub trait IntPredicateMethods {
-    fn convert_to_backend_specific(intpre : IntPredicate) -> Self;
-}
-
 #[allow(dead_code)]
 pub enum RealPredicate {
     RealPredicateFalse,
@@ -58,11 +54,6 @@ pub enum RealPredicate {
     RealPredicateTrue,
 }
 
-pub trait RealPredicateMethods {
-    fn convert_to_backend_specific(realpred : RealPredicate) -> Self;
-}
-
-
 pub trait BuilderMethods<'a, 'll :'a, 'tcx: 'll,
     Value : ?Sized,
     BasicBlock: ?Sized