Update test.

Author: rxwei

test/AutoDiff/differentiable_func_type.sil

@@ -3,8 +3,6 @@
 // RUN: %target-sil-opt %t/tmp.sib -o %t/tmp.2.sib -module-name differentiable_func_type
 // RUN: %target-sil-opt %t/tmp.2.sib -module-name differentiable_func_type | %FileCheck %s -check-prefix=CHECK-SIL
 
-// RUN: %target-swift-frontend %s -emit-ir -module-name differentiable_func_type | %FileCheck %s -check-prefix=CHECK-LLVM
-
 sil_stage raw
 
 import Swift
@@ -14,18 +12,19 @@ bb0(%0 : $@differentiable(linear) (Float) -> Float):
   return %0 : $@differentiable(linear) (Float) -> Float
 }
 
-// CHECK-LABEL: sil @takeAndReturnLinear : $@convention(thin) (@differentiable(linear) (Float) -> Float) -> @differentiable(linear) (Float) -> Float {
-// CHECK: bb0([[ARG:%.*]] : $@differentiable(linear) (Float) -> Float):
-// CHECK:   return [[ARG]] : $@differentiable(linear) (Float) -> Float
-// CHECK: }
+// CHECK-SIL-LABEL: sil @takeAndReturnLinear : $@convention(thin) (@differentiable(linear) (Float) -> Float) -> @differentiable(linear) (Float) -> Float {
+// CHECK-SIL: bb0([[ARG:%.*]] : $@differentiable(linear) (Float) -> Float):
+// CHECK-SIL:   return [[ARG]] : $@differentiable(linear) (Float) -> Float
+// CHECK-SIL: }
 
 
 sil @takeAndReturnDifferentiable : $@convention(thin) (@differentiable (Float) -> Float) -> @differentiable (Float) -> Float {
 bb0(%0 : $@differentiable (Float) -> Float):
   return %0 : $@differentiable (Float) -> Float
 }
 
-// CHECK-LABEL: sil @takeAndReturnDifferentiable : $@convention(thin) (@differentiable (Float) -> Float) -> @differentiable (Float) -> Float {
-// CHECK: bb0([[ARG:%.*]] : $@differentiable (Float) -> Float):
-// CHECK:   return [[ARG]] : $@differentiable (Float) -> Float
-// CHECK: }
+// CHECK-SIL-LABEL: sil @takeAndReturnDifferentiable : $@convention(thin) (@differentiable (Float) -> Float) -> @differentiable (Float) -> Float {
+// CHECK-SIL: bb0([[ARG:%.*]] : $@differentiable (Float) -> Float):
+// CHECK-SIL:   return [[ARG]] : $@differentiable (Float) -> Float
+// CHECK-SIL: }
+