[polly] r229476 - Update isl to 0ae2b02 "isl_seq_combine: optimize for common case"

[Tobias Grosser]

Author: grosser
Date: Tue Feb 17 01:39:25 2015
New Revision: 229476

URL: http://llvm.org/viewvc/llvm-project?rev=229476&view=rev
Log:
Update isl to 0ae2b02 "isl_seq_combine: optimize for common case"

This is just a single commit that includes a performance optimization that
should improve dependence analysis time. Our performance bots should measure
this difference.

Modified:
    polly/trunk/lib/External/isl/isl_seq.c

Modified: polly/trunk/lib/External/isl/isl_seq.c
URL: http://llvm.org/viewvc/llvm-project/polly/trunk/lib/External/isl/isl_seq.c?rev=229476&r1=229475&r2=229476&view=diff
==============================================================================
--- polly/trunk/lib/External/isl/isl_seq.c (original)
+++ polly/trunk/lib/External/isl/isl_seq.c Tue Feb 17 01:39:25 2015
@@ -107,6 +107,14 @@ void isl_seq_combine(isl_int *dst, isl_i
 	int i;
 	isl_int tmp;
 
+	if (dst == src1 && isl_int_is_one(m1)) {
+		if (isl_int_is_zero(m2))
+			return;
+		for (i = 0; i < len; ++i)
+			isl_int_addmul(src1[i], m2, src2[i]);
+		return;
+	}
+
 	isl_int_init(tmp);
 	for (i = 0; i < len; ++i) {
 		isl_int_mul(tmp, m1, src1[i]);