Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 29 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/lto/20110201-1_0.c b/gcc-4.9/gcc/testsuite/gcc.dg/lto/20110201-1_0.c
new file mode 100644
index 000000000..a00664928
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gcc.dg/lto/20110201-1_0.c
@@ -0,0 +1,29 @@
+/* { dg-lto-do run } */
+/* { dg-lto-options { { -O0 -flto } } } */
+/* { dg-extra-ld-options "-O2 -ffast-math -fuse-linker-plugin" } */
+/* { dg-require-linker-plugin "" } */
+
+/* We require a linker plugin because otherwise we'd need to link
+   against libm which we are not sure here has cabs on all targets.
+   This is because collect2 invokes ld on the -O0 object code
+   which does not have folded cabs.  */
+
+double cabs(_Complex double);
+double __attribute__((used))
+foo (_Complex double x, int b)
+{
+  if (b)
+    x = 0;
+  return cabs(x);
+}
+
+/* We provide a dummy sqrt to avoid link failures on targets that do not
+   expand sqrt inline.  Note that we do not link against libm in order
+   to ensure cabs is not satisfied by the library, but must be folded.  */
+double __attribute__((used))
+sqrt (double x)
+{
+  return x;
+}
+
+int main() { return 0; }