1 files changed, 18 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/opt/conj1.C b/gcc/testsuite/g++.dg/opt/conj1.C
new file mode 100644
index 000000000..b578abbdf
--- /dev/null
+++ b/gcc/testsuite/g++.dg/opt/conj1.C
@@ -0,0 +1,18 @@
+// PR target/5740
+// This testcase ICEd on SPARC -m64 because emit_group_load tried
+// to move a DFmode register into DImode register directly.
+// { dg-do compile }
+// { dg-options "-O2" }
+
+struct C
+{
+  C (double y, double z) { __real__ x = y; __imag__ x = z; }
+  double r () const { return __real__ x; }
+  double i () const { return __imag__ x; }
+  __complex__ double x;
+};
+
+C conj (const C& z)
+{
+  return C (z.r (), -z.i ());
+}