Update isl to ensure 'extern "C" {' is available

Older isl versions did not properly guard all function declarations for the
use in C++. Specifically, the isl/val_gmp.h header was not properly guarded.
This patch ensures we have the proper guards in place and do not accidentally
link to name-mangled C++ versions of those functions that are not available in
libisl.so.

llvm-svn: 203462

diff --git a/polly/utils/checkout_cloog.sh b/polly/utils/checkout_cloog.sh
index 3ffd4b5..7b2e84a 100755 (executable)
--- a/polly/utils/checkout_cloog.sh
+++ b/polly/utils/checkout_cloog.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 CLOOG_HASH="2d8b7c6b43ee46fee978a57fa6877de49675f357"
-ISL_HASH="1b3ba3b72c0482fd36bf0b4a1186a259f7bafeed"
+ISL_HASH="14d7941489582c8ace26f661f78936041641edf7"
 
 PWD=`pwd`