obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 37 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr19590.c b/gcc/testsuite/gcc.dg/tree-ssa/pr19590.c
new file mode 100644
index 000000000..1be1119da
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr19590.c
@@ -0,0 +1,37 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-ivopts" } */
+
+void vnum_test8(int *data) 
+{ 
+  int i; 
+  int stop = data[3]; 
+  int m = data[4]; 
+  int n = m; 
+  for (i=1; i<stop; i++) { 
+    int k = data[2]; 
+    data[k] = 2; 
+    data[0] = m - n; 
+    k = data[1]; 
+    m = m + k; 
+    n = n + k; 
+  } 
+} 
+
+/* Using the SCEV analysis, this loop should be transformed to:
+
+   | void vnum_result8(int *data) 
+   |{ 
+   |  int i; 
+   |  int stop = data[3]; 
+   |  for (i=1; i<stop; i++) { 
+   |    int k = data[2]; 
+   |    data[k] = 2; 
+   |    data[0] = 0; 
+   |  } 
+   |}
+
+*/
+
+/* { dg-final { scan-tree-dump-times "= 0;" 1 "ivopts"} } */
+/* { dg-final { scan-tree-dump-times "= 2;" 1 "ivopts"} } */
+/* { dg-final { cleanup-tree-dump "ivopts" } }  */