[polly] r329328 - Silence msvc warning on isl. NFC.

[Michael Kruse via llvm-commits]

Author: meinersbur
Date: Thu Apr  5 11:30:44 2018
New Revision: 329328

URL: http://llvm.org/viewvc/llvm-project?rev=329328&view=rev
Log:
Silence msvc warning on isl. NFC.

The warning is:

    isl_union_map.c(2041): warning C4221: nonstandard extension used: 'filter_user': cannot be initialized using address of automatic variable 'data'

for the following code (and others)

	struct isl_un_op_drop_user_data data = { &isl_set_is_wrapping };
	struct isl_un_op_control control = {
		.filter = &un_op_filter_drop_user,
		.filter_user = &data,
		.fn_map = &isl_set_wrapped_domain_map,
	};

Modified:
    polly/trunk/lib/External/CMakeLists.txt

Modified: polly/trunk/lib/External/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/polly/trunk/lib/External/CMakeLists.txt?rev=329328&r1=329327&r2=329328&view=diff
==============================================================================
--- polly/trunk/lib/External/CMakeLists.txt (original)
+++ polly/trunk/lib/External/CMakeLists.txt Thu Apr  5 11:30:44 2018
@@ -352,6 +352,7 @@ if (MSVC)
     -wd4200 # nonstandard extension used: zero-sized array in struct/union
     -wd4201 # nonstandard extension used: nameless struct/union
     -wd4334 # 'operator': result of 32-bit shift implicitly converted to 64 bits (was 64-bit shift intended?)
+    -wd4221 # nonstandard extension used : 'identifier' : cannot be initialized using address of automatic variable
   )
   if (POLLY_BUNDLED_ISL)
     target_compile_options(PollyISL PRIVATE ${DISABLE_WARNING_FLAGS})