Remove the flag -disable-func-sig-opts from tests that don't need it.

I am trying to kill the flag -disable-func-sig-opts. This commit removes the
flag from the tests that don't need it. The next step would be to fix the tests
that do need it.

Author: nadavrot

test/SILPasses/globalopt_global_propagation.swift

@@ -1,5 +1,5 @@
-// RUN: %target-swift-frontend -disable-func-sig-opts -O -emit-sil  %s | FileCheck %s
-// RUN: %target-swift-frontend -disable-func-sig-opts -O -wmo -emit-sil  %s | FileCheck -check-prefix=CHECK-WMO %s
+// RUN: %target-swift-frontend  -O -emit-sil  %s | FileCheck %s
+// RUN: %target-swift-frontend  -O -wmo -emit-sil  %s | FileCheck -check-prefix=CHECK-WMO %s
 
 // Check that values of internal and private global variables, which are provably assigned only 
 // once, are propagated into their uses and enable further optimizations like constant

test/SILPasses/globalopt_let_propagation.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -disable-func-sig-opts -O -emit-sil -primary-file %s | FileCheck %s
+// RUN: %target-swift-frontend  -O -emit-sil -primary-file %s | FileCheck %s
 
 // Check that values of static let and global let variables are propagated into their uses
 // and enable further optimizations like constant propagation, simplifications, etc.

test/SILPasses/inline_recursive.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -primary-file %s -disable-func-sig-opts -parse-as-library -emit-sil -O | FileCheck %s
+// RUN: %target-swift-frontend -primary-file %s  -parse-as-library -emit-sil -O | FileCheck %s
 
 private func recFunc(x: Int) -> Int {
   if x > 0 {

test/SILPasses/inline_self.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -O -emit-sil -disable-func-sig-opts -primary-file %s | FileCheck %s
+// RUN: %target-swift-frontend -O -emit-sil  -primary-file %s | FileCheck %s
 //
 // This is a .swift test because the SIL parser does not support Self.
 

test/SILPasses/let_propagation.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -primary-file %s -disable-func-sig-opts -emit-sil -O | FileCheck %s
+// RUN: %target-swift-frontend -primary-file %s  -emit-sil -O | FileCheck %s
 
 // Check that LoadStoreOpts can handle "let" variables properly.
 // Such variables should be loaded only once and their loaded values can be reused.

test/SILPasses/recursive_func.sil

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -O %s -disable-func-sig-opts -emit-sil | FileCheck %s
+// RUN: %target-swift-frontend -O %s  -emit-sil | FileCheck %s
 
 // rdar://16761933
 // Make sure we can handle recursive function within a class.

test/SILPasses/spec_recursion.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -O -disable-func-sig-opts -emit-sil %s |  FileCheck %s
+// RUN: %target-swift-frontend -O  -emit-sil %s |  FileCheck %s
 
 // Make sure we are not looping forever.
 

test/SILPasses/specialize_anyobject.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -disable-func-sig-opts -O -sil-inline-threshold 0 -emit-sil -primary-file %s | FileCheck %s
+// RUN: %target-swift-frontend  -O -sil-inline-threshold 0 -emit-sil -primary-file %s | FileCheck %s
 
 // rdar://problem/20338028
 protocol PA: class { }

test/SILPasses/specialize_chain.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -disable-func-sig-opts -O -emit-sil -primary-file %s | FileCheck %s
+// RUN: %target-swift-frontend  -O -emit-sil -primary-file %s | FileCheck %s
 
 // We can't deserialize apply_inst with subst lists. When radar://14443304
 // is fixed then we should convert this test to a SIL test.

test/SILPasses/specialize_checked_cast_branch.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -disable-func-sig-opts -emit-sil -O -sil-inline-threshold 0 %s -o - | not FileCheck %s
+// RUN: %target-swift-frontend  -emit-sil -O -sil-inline-threshold 0 %s -o - | not FileCheck %s
 
 // FIXME: rdar://problem/18603827
 

test/SILPasses/specialize_ext.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -disable-func-sig-opts -O -emit-sil -primary-file %s | FileCheck %s
+// RUN: %target-swift-frontend  -O -emit-sil -primary-file %s | FileCheck %s
 
 struct XXX<T> {
   init(t : T) {m_t = t}

test/SILPasses/specialize_self.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -disable-func-sig-opts -O -sil-inline-threshold 0 -emit-sil -primary-file %s | FileCheck %s
+// RUN: %target-swift-frontend  -O -sil-inline-threshold 0 -emit-sil -primary-file %s | FileCheck %s
 
 // CHECK-NOT: generic specialization <Swift.AnyObject, Self> of specialize_self.cast <A, B>(A) -> Swift.Optional<B>