Split up casting UI tests

Part of #2038

Author: phansch

Diff for: tests/ui/cast.rs

@@ -25,36 +25,6 @@ fn main() {
     1u32 as i32;
     1u64 as i64;
     1usize as isize;
-    // Test cast_lossless with casts to integer types
-    1i8 as i16;
-    1i8 as i32;
-    1i8 as i64;
-    1u8 as i16;
-    1u8 as i32;
-    1u8 as i64;
-    1u8 as u16;
-    1u8 as u32;
-    1u8 as u64;
-    1i16 as i32;
-    1i16 as i64;
-    1u16 as i32;
-    1u16 as i64;
-    1u16 as u32;
-    1u16 as u64;
-    1i32 as i64;
-    1u32 as i64;
-    1u32 as u64;
-    // Test cast_lossless with casts to floating-point types
-    1i8 as f32;
-    1i8 as f64;
-    1u8 as f32;
-    1u8 as f64;
-    1i16 as f32;
-    1i16 as f64;
-    1u16 as f32;
-    1u16 as f64;
-    1i32 as f64;
-    1u32 as f64;
     // Test cast_lossless with casts from floating-point types
     1.0f32 as f64;
     // Test cast_lossless with an expression wrapped in parens
@@ -63,25 +33,6 @@ fn main() {
     1i32 as u32;
     1isize as usize;
     // Extra checks for *size
-    // Casting from *size
-    1isize as i8;
-    1isize as f64;
-    1usize as f64;
-    1isize as f32;
-    1usize as f32;
-    1isize as i32;
-    1isize as u32;
-    1usize as u32;
-    1usize as i32;
-    // Casting to *size
-    1i64 as isize;
-    1i64 as usize;
-    1u64 as isize;
-    1u64 as usize;
-    1u32 as isize;
-    1u32 as usize; // Should not trigger any lint
-    1i32 as isize; // Neither should this
-    1i32 as usize;
     // Test cast_unnecessary
     1i32 as i32;
     1f32 as f32;