diff --git a/llvm/test/CodeGen/R600/fconst64.ll b/llvm/test/CodeGen/R600/fconst64.ll
new file mode 100644
index 000000000000..2402a9c786e1
--- /dev/null
+++ b/llvm/test/CodeGen/R600/fconst64.ll
@@ -0,0 +1,12 @@
+; RUN: llc < %s -march=r600 -mcpu=tahiti | FileCheck %s
+
+; CHECK: @fconst_f64
+; CHECK: V_MOV_B32_e32 {{VGPR[0-9]+}}, 0.000000e+00
+; CHECK-NEXT: V_MOV_B32_e32 {{VGPR[0-9]+}}, 2.312500e+00
+
+define void @fconst_f64(double addrspace(1)* %out, double addrspace(1)* %in) {
+   %r1 = load double addrspace(1)* %in
+   %r2 = fadd double %r1, 5.000000e+00
+   store double %r2, double addrspace(1)* %out
+   ret void
+}