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, 40 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr31261.c b/gcc/testsuite/gcc.dg/tree-ssa/pr31261.c
new file mode 100644
index 000000000..42bd2a21e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/pr31261.c
@@ -0,0 +1,40 @@
+/* PR tree-optimization/31261 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-original" } */
+
+unsigned int
+f1 (unsigned int a)
+{
+  return (8 - (a & 7)) & 7;
+}
+
+long int
+f2 (long int b)
+{
+  return (16 + (b & 7)) & 15;
+}
+
+char
+f3 (char c)
+{
+  return -(c & 63) & 31;
+}
+
+int
+f4 (int d)
+{
+  return (12 - (d & 15)) & 7;
+}
+
+int
+f5 (int e)
+{
+  return (12 - (e & 7)) & 15;
+}
+
+/* { dg-final { scan-tree-dump-times "return -a \& 7;" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "return b \& 7;" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "return \\(char\\) -\\(unsigned char\\) c \& 31;" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "return \\(int\\) \\(12 - \\(unsigned int\\) d\\) \& 7;" 1 "original" } } */
+/* { dg-final { scan-tree-dump-times "return 12 - \\(e \& 7\\) \& 15;" 1 "original" } } */
+/* { dg-final { cleanup-tree-dump "original" } } */