Correct some confused diagnostic terminology

Attributes accept arguments, not parameters, so we should report that
the duplicate attribute arguments don't match.

Author: AaronBallman

clang/include/clang/Basic/DiagnosticSemaKinds.td

@@ -9621,7 +9621,7 @@ def warn_duplicate_attribute_exact : Warning<
   "attribute %0 is already applied">, InGroup<IgnoredAttributes>;
 
 def warn_duplicate_attribute : Warning<
-  "attribute %0 is already applied with different parameters">,
+  "attribute %0 is already applied with different arguments">,
   InGroup<IgnoredAttributes>;
 
 def warn_sync_fetch_and_nand_semantics_change : Warning<

clang/test/Sema/attr-min-vector-width.c

@@ -5,7 +5,7 @@ void f(void) __attribute__((__min_vector_width__(i))); /* expected-error {{'__mi
 
 void f2(void) __attribute__((__min_vector_width__(128)));
 
-void f3(void) __attribute__((__min_vector_width__(128), __min_vector_width__(256))); /* expected-warning {{attribute '__min_vector_width__' is already applied with different parameters}} */
+void f3(void) __attribute__((__min_vector_width__(128), __min_vector_width__(256))); /* expected-warning {{attribute '__min_vector_width__' is already applied with different arguments}} */
 
 void f4(void) __attribute__((__min_vector_width__())); /* expected-error {{'__min_vector_width__' attribute takes one argument}} */
 

clang/test/SemaOpenCL/invalid-kernel-attrs.cl

@@ -8,11 +8,11 @@ kernel __attribute__((vec_type_hint(void))) void kernel3() {} //expected-error{{
 
 kernel __attribute__((vec_type_hint(bool))) void kernel4() {} //expected-error{{a non-vector or non-vectorizable scalar type is an invalid argument to attribute 'vec_type_hint'}}
 
-kernel __attribute__((vec_type_hint(int))) __attribute__((vec_type_hint(float))) void kernel5() {} //expected-warning{{attribute 'vec_type_hint' is already applied with different parameters}}
+kernel __attribute__((vec_type_hint(int))) __attribute__((vec_type_hint(float))) void kernel5() {} //expected-warning{{attribute 'vec_type_hint' is already applied with different arguments}}
 
 kernel __attribute__((work_group_size_hint(8,16,32,4))) void kernel6() {} //expected-error{{'work_group_size_hint' attribute requires exactly 3 arguments}}
 
-kernel __attribute__((work_group_size_hint(1,2,3))) __attribute__((work_group_size_hint(3,2,1))) void kernel7() {}  //expected-warning{{attribute 'work_group_size_hint' is already applied with different parameters}}
+kernel __attribute__((work_group_size_hint(1,2,3))) __attribute__((work_group_size_hint(3,2,1))) void kernel7() {}  //expected-warning{{attribute 'work_group_size_hint' is already applied with different arguments}}
 
 __attribute__((reqd_work_group_size(8,16,32))) void kernel8(){} // expected-error {{attribute 'reqd_work_group_size' can only be applied to an OpenCL kernel}}
 
@@ -36,7 +36,7 @@ kernel __attribute__((reqd_work_group_size(0,1,2))) void kernel13(){} // expecte
 
 __attribute__((intel_reqd_sub_group_size(8))) void kernel14(){} // expected-error {{attribute 'intel_reqd_sub_group_size' can only be applied to an OpenCL kernel}}
 kernel __attribute__((intel_reqd_sub_group_size(0))) void kernel15(){} // expected-error {{'intel_reqd_sub_group_size' attribute must be greater than 0}}
-kernel __attribute__((intel_reqd_sub_group_size(8))) __attribute__((intel_reqd_sub_group_size(16))) void kernel16() {}  //expected-warning{{attribute 'intel_reqd_sub_group_size' is already applied with different parameters}}
+kernel __attribute__((intel_reqd_sub_group_size(8))) __attribute__((intel_reqd_sub_group_size(16))) void kernel16() {}  //expected-warning{{attribute 'intel_reqd_sub_group_size' is already applied with different arguments}}
 
 __kernel __attribute__((work_group_size_hint(8,-16,32))) void neg1() {} //expected-error{{'work_group_size_hint' attribute requires a non-negative integral compile time constant expression}}
 __kernel __attribute__((reqd_work_group_size(8,16,-32))) void neg2(){} // expected-error{{'reqd_work_group_size' attribute requires a non-negative integral compile time constant expression}}