Re-enable some tests that were disabled a long time ago

Author: slavapestov

test/Constraints/issue-52724.swift

@@ -1,6 +1,4 @@
-// RUN: %target-swift-frontend -typecheck -verify %s
-
-// REQUIRES: rdar65007946
+// RUN: %target-swift-frontend -typecheck -verify -disable-constraint-solver-performance-hacks %s
 
 // https://github.com/apple/swift/issues/52724
 

test/Constraints/warn_long_compile.swift

@@ -1,5 +1,5 @@
-// RUN: %target-typecheck-verify-swift -warn-long-expression-type-checking=1 -warn-long-function-bodies=1
-// REQUIRES: rdar44305428
+// RUN: %target-typecheck-verify-swift -warn-long-expression-type-checking=1 -disable-constraint-solver-performance-hacks -warn-long-function-bodies=1 -solver-expression-time-threshold=60
+// FIXME: -solver-expression-time-threshold=60 should not be needed
 @_silgen_name("generic_foo")
 func foo<T>(_ x: T) -> T
 
@@ -8,6 +8,6 @@ func foo(_ x: Int) -> Int
 
 func test(m: Double) -> Int {
   // expected-warning@-1 {{global function 'test(m:)' took}}
-  return Int(foo(Float(m) / 20) * 20 - 2) + 10
+  return ~(~(~(~(~(~(~(~(~(~(~(~(0))))))))))))
   // expected-warning@-1 {{expression took}}
 }

test/Interpreter/objc_protocols.swift

@@ -1,4 +1,3 @@
-// REQUIRES: rdar107343134
 // RUN: %target-run-simple-swift
 // REQUIRES: executable_test
 // REQUIRES: objc_interop