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, 27 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/mips/ins-2.c b/gcc/testsuite/gcc.target/mips/ins-2.c
new file mode 100644
index 000000000..a71e6c053
--- /dev/null
+++ b/gcc/testsuite/gcc.target/mips/ins-2.c
@@ -0,0 +1,27 @@
+/* { dg-do compile } */
+/* { dg-options "-O -meb isa_rev>=2 -mgp64" } */
+/* { dg-final { scan-assembler-times "\tins\t|\tdins\t" 1 } } */
+/* { dg-final { scan-assembler-times "\tsll\t|\tins\t" 1 } } */
+
+/* When inserting something into the top bit of a 32-bit structure,
+   we must make sure that the register remains properly sign-extended.
+   There are two ways of doing this:
+ 
+     - use purely 32-bit bit manipulations (a single INS, matched twice here).
+     - use a 64-bit bit manipulation (DINS), and sign-extend the result.  We
+     check for this extension using SLL.  */
+
+struct s
+{
+  int a:3;
+  int b:29;
+};
+
+NOMIPS16 void
+f (int a)
+{
+  struct s s;
+  asm volatile ("" : "=r"(s));
+  s.a = a;
+  asm volatile ("" :: "r"(s));
+}