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, 26 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-10.c b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-10.c
new file mode 100644
index 000000000..34217a029
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-10.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-pre-stats" } */
+
+union loc {  unsigned reg; signed offset; };
+void __frame_state_for (volatile char *state_in, int x)
+{
+  /* We should move all the loads out of this loop. Right now, we only
+     move one.  It takes two insertions because we insert a cast.  */
+    union loc fs;
+    int reg;
+    for (;;)     {
+        switch (x)  {
+	    case 0:
+		*state_in = fs.reg;
+	    case 1:
+		*state_in = fs.offset;
+	}
+    }
+}
+
+/* This is a weird testcase.  It should need PPRE to hoist the loop
+   invariants and the volatileness of state_in prevents DSE of the
+   first store.  Thus, this is XFAILed.  */
+
+/* { dg-final { scan-tree-dump "Insertions: 2" "pre" { xfail *-*-* } } } */
+/* { dg-final { cleanup-tree-dump "pre" } } */