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, 23 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr46212.c b/gcc/testsuite/gcc.dg/pr46212.c
new file mode 100644
index 000000000..9dbb601e0
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr46212.c
@@ -0,0 +1,23 @@
+/* PR rtl-optimization/46212 */
+/* { dg-do compile } */
+/* { dg-options "-O3 -funroll-loops" } */
+/* { dg-options "-O3 -funroll-loops -march=i386" { target { { i686-*-* x86_64-*-* } && ilp32 } } } */
+
+static inline unsigned
+foo (void *x)
+{
+  unsigned y = *(volatile unsigned *) (x);
+  return (y >> 24) | ((y >> 8) & 0xff00) | ((y & 0xff00) << 8) | (y << 24);
+}
+
+void
+bar (void *x, void *y, int z)
+{
+  unsigned c;
+  while (z--)
+    {
+      c = foo (y);
+      *(unsigned *) x = (c & 0xf80000) >> 9 | (c & 0xf800) >> 6
+			| (c & 0xf8) >> 3 | (c & 0x80000000) >> 16;
+    }
+}