Adding valid conventions on tests

Author: LucianoPAlmeida

test/attr/attr_convention.swift

@@ -13,4 +13,10 @@ func sr11027(_ f: @convention(block) @autoclosure () -> Int) -> Void {} // expec
 sr11027(1)
 
 func sr11027_c(_ f: @convention(c) @autoclosure () -> Int) -> Void {} // expected-error{{@convention(c) attribute is not allowed on @autoclosure type}}
-sr11027_c(1)
+sr11027_c(1)
+
+func sr11027_swift(_ f: @convention(swift) @autoclosure () -> Int) -> Void {} // OK
+sr11027_swift(1)
+
+func sr11027_thin(_ f: @convention(thin) @autoclosure () -> Int) -> Void {} // OK
+sr11027_thin(1)

validation-test/compiler_crashers_2_fixed/sr11027.swift

@@ -11,4 +11,10 @@ func sr11027(_ f: @convention(block) @autoclosure () -> Int) -> Void {}
 sr11027(1)
 
 func sr11027_c(_ f: @convention(c) @autoclosure () -> Int) -> Void {}
-sr11027_c(1)
+sr11027_c(1)
+
+func sr11027_swift(_ f: @convention(swift) @autoclosure () -> Int) -> Void {} // OK
+sr11027_swift(1)
+
+func sr11027_thin(_ f: @convention(thin) @autoclosure () -> Int) -> Void {} // OK
+sr11027_thin(1)