1 files changed, 55 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/merge_bits_1.F90 b/gcc/testsuite/gfortran.dg/merge_bits_1.F90
new file mode 100644
index 000000000..e8f5e2af4
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/merge_bits_1.F90
@@ -0,0 +1,55 @@
+! Test the MERGE_BITS intrinsic
+!
+! { dg-do run }
+! { dg-options "-ffree-line-length-none" }
+
+  interface run_merge
+    procedure run_merge_1
+    procedure run_merge_2
+    procedure run_merge_4
+    procedure run_merge_8
+  end interface
+
+#define CHECK(I,J,K) \
+  if (merge_bits(I,J,K) /= ior(iand(I,K),iand(J,not(K)))) call abort ; \
+  if (run_merge(I,J,K) /= merge_bits(I,J,K)) call abort
+
+  CHECK(13_1,18_1,22_1)
+  CHECK(-13_1,18_1,22_1)
+  CHECK(13_1,-18_1,22_1)
+  CHECK(13_1,18_1,-22_1)
+
+  CHECK(13_2,18_2,22_2)
+  CHECK(-13_2,18_2,22_2)
+  CHECK(13_2,-18_2,22_2)
+  CHECK(13_2,18_2,-22_2)
+
+  CHECK(13_4,18_4,22_4)
+  CHECK(-13_4,18_4,22_4)
+  CHECK(13_4,-18_4,22_4)
+  CHECK(13_4,18_4,-22_4)
+
+  CHECK(13_8,18_8,22_8)
+  CHECK(-13_8,18_8,22_8)
+  CHECK(13_8,-18_8,22_8)
+  CHECK(13_8,18_8,-22_8)
+
+contains
+
+  function run_merge_1 (i, j, k) result(res)
+    integer(kind=1) :: i, j, k, res
+    res = merge_bits(i,j,k)
+  end function 
+  function run_merge_2 (i, j, k) result(res)
+    integer(kind=2) :: i, j, k, res
+    res = merge_bits(i,j,k)
+  end function 
+  function run_merge_4 (i, j, k) result(res)
+    integer(kind=4) :: i, j, k, res
+    res = merge_bits(i,j,k)
+  end function 
+  function run_merge_8 (i, j, k) result(res)
+    integer(kind=8) :: i, j, k, res
+    res = merge_bits(i,j,k)
+  end function 
+end