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[PATCH] testcase for PR56407
- From: Richard Biener <rguenther at suse dot de>
- To: gcc-patches at gcc dot gnu dot org
- Date: Wed, 3 Apr 2013 12:24:40 +0200 (CEST)
- Subject: [PATCH] testcase for PR56407
The testcase no longer fails on the 4.8 branch and trunk,
committed there so we do not regress.
Richard.
2013-04-03 Richard Biener <rguenther@suse.de>
PR tree-optimization/56407
* gcc.dg/torture/pr56407.c: New testcase.
Index: gcc/testsuite/gcc.dg/torture/pr56407.c
===================================================================
--- gcc/testsuite/gcc.dg/torture/pr56407.c (revision 0)
+++ gcc/testsuite/gcc.dg/torture/pr56407.c (working copy)
@@ -0,0 +1,48 @@
+/* { dg-do run } */
+
+extern void abort(void);
+extern int rand(void);
+
+static void copy(int *r,int *a,int na)
+{
+ int i;
+ for( i = 0 ; i < na ; i++ )
+ r[i] = a[i];
+}
+
+static void foo(int *a,int na)
+{
+ int i;
+ for( i = 0 ; i < na ; i++ )
+ a[i] = rand();
+}
+
+static int cmp(int *a,int *b,int n)
+{
+ int i;
+ for( i = 0 ; i < n ; i++ )
+ if ( a[i] != b[i] )
+ return -1;
+ return 0;
+}
+
+void __attribute__((noinline,noclone))
+test(int sz,int comm)
+{
+ int j,n;
+ int v[64],w[64];
+ for( j = 1 ; j <= sz ; j++ )
+ {
+ n = (2 * j - 1) * (2 * j - 1);
+ foo(w,n);
+ copy(v,w,n);
+ if ( comm )
+ if ( cmp(v,w,n) ) abort ();
+ }
+}
+
+int main()
+{
+ test(2,1);
+ return 0;
+}