OpenMP: Support complex/float in && and || reduction

C/C++ permit logical AND and logical OR also with floating-point or complex
arguments by doing an unequal zero comparison; the result is an 'int' with
value one or zero.  Hence, those are also permitted as reduction variable,
even though it is not the most sensible thing to do.

gcc/c/ChangeLog:

	* c-typeck.c (c_finish_omp_clauses): Accept float + complex
	for || and && reductions.

gcc/cp/ChangeLog:

	* semantics.c (finish_omp_reduction_clause): Accept float + complex
	for || and && reductions.

gcc/ChangeLog:

	* omp-low.c (lower_rec_input_clauses, lower_reduction_clauses): Handle
	&& and || with floating-point and complex arguments.

gcc/testsuite/ChangeLog:

	* gcc.dg/gomp/clause-1.c: Use 'reduction(&:..)' instead of '...(&&:..)'.

libgomp/ChangeLog:

	* testsuite/libgomp.c-c++-common/reduction-1.c: New test.
	* testsuite/libgomp.c-c++-common/reduction-2.c: New test.
	* testsuite/libgomp.c-c++-common/reduction-3.c: New test.

(cherry picked from commit 1580fc764423bf89e9b853aaa8c65999e37ccb8b)

4 files changed, 770 insertions, 0 deletions

diff --git a/libgomp/testsuite/libgomp.c-c++-common/reduction-1.c b/libgomp/testsuite/libgomp.c-c++-common/reduction-1.c
new file mode 100644
index 0000000..89a4153
--- /dev/null
+++ b/libgomp/testsuite/libgomp.c-c++-common/reduction-1.c
@@ -0,0 +1,192 @@
+/* C / C++'s logical AND and OR operators take any scalar argument
+   which compares (un)equal to 0 - the result 1 or 0 and of type int.
+
+   In this testcase, the int result is again converted to a floating-poing
+   or complex type.
+
+   While having a floating-point/complex array element with || and && can make
+   sense, having a non-integer/non-bool reduction variable is odd but valid.
+
+   Test: FP reduction variable + FP array.  */
+
+#define N 1024
+_Complex float rcf[N];
+_Complex double rcd[N];
+float rf[N];
+double rd[N];
+
+int
+reduction_or ()
+{
+  float orf = 0;
+  double ord = 0;
+  _Complex float orfc = 0;
+  _Complex double ordc = 0;
+
+  #pragma omp parallel reduction(||: orf)
+  for (int i=0; i < N; ++i)
+    orf = orf || rf[i];
+
+  #pragma omp parallel for reduction(||: ord)
+  for (int i=0; i < N; ++i)
+    ord = ord || rcd[i];
+
+  #pragma omp parallel for simd reduction(||: orfc)
+  for (int i=0; i < N; ++i)
+    orfc = orfc || rcf[i];
+
+  #pragma omp parallel loop reduction(||: ordc)
+  for (int i=0; i < N; ++i)
+    ordc = ordc || rcd[i];
+
+  return orf + ord + __real__ orfc + __real__ ordc;
+}
+
+int
+reduction_or_teams ()
+{
+  float orf = 0;
+  double ord = 0;
+  _Complex float orfc = 0;
+  _Complex double ordc = 0;
+
+  #pragma omp teams distribute parallel for reduction(||: orf)
+  for (int i=0; i < N; ++i)
+    orf = orf || rf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(||: ord)
+  for (int i=0; i < N; ++i)
+    ord = ord || rcd[i];
+
+  #pragma omp teams distribute parallel for reduction(||: orfc)
+  for (int i=0; i < N; ++i)
+    orfc = orfc || rcf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(||: ordc)
+  for (int i=0; i < N; ++i)
+    ordc = ordc || rcd[i];
+
+  return orf + ord + __real__ orfc + __real__ ordc;
+}
+
+int
+reduction_and ()
+{
+  float andf = 1;
+  double andd = 1;
+  _Complex float andfc = 1;
+  _Complex double anddc = 1;
+
+  #pragma omp parallel reduction(&&: andf)
+  for (int i=0; i < N; ++i)
+    andf = andf && rf[i];
+
+  #pragma omp parallel for reduction(&&: andd)
+  for (int i=0; i < N; ++i)
+    andd = andd && rcd[i];
+
+  #pragma omp parallel for simd reduction(&&: andfc)
+  for (int i=0; i < N; ++i)
+    andfc = andfc && rcf[i];
+
+  #pragma omp parallel loop reduction(&&: anddc)
+  for (int i=0; i < N; ++i)
+    anddc = anddc && rcd[i];
+
+  return andf + andd + __real__ andfc + __real__ anddc;
+}
+
+int
+reduction_and_teams ()
+{
+  float andf = 1;
+  double andd = 1;
+  _Complex float andfc = 1;
+  _Complex double anddc = 1;
+
+  #pragma omp teams distribute parallel for reduction(&&: andf)
+  for (int i=0; i < N; ++i)
+    andf = andf && rf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(&&: andd)
+  for (int i=0; i < N; ++i)
+    andd = andd && rcd[i];
+
+  #pragma omp teams distribute parallel for reduction(&&: andfc)
+  for (int i=0; i < N; ++i)
+    andfc = andfc && rcf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(&&: anddc)
+  for (int i=0; i < N; ++i)
+    anddc = anddc && rcd[i];
+
+  return andf + andd + __real__ andfc + __real__ anddc;
+}
+
+int
+main ()
+{
+  for (int i = 0; i < N; ++i)
+    {
+      rf[i] = 0;
+      rd[i] = 0;
+      rcf[i] = 0;
+      rcd[i] = 0;
+    }
+
+  if (reduction_or () != 0)
+    __builtin_abort ();
+  if (reduction_or_teams () != 0)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  rf[10] = 1.0;
+  rd[15] = 1.0;
+  rcf[10] = 1.0;
+  rcd[15] = 1.0i;
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  for (int i = 0; i < N; ++i)
+    {
+      rf[i] = 1;
+      rd[i] = 1;
+      rcf[i] = 1;
+      rcd[i] = 1;
+    }
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 4)
+    __builtin_abort ();
+  if (reduction_and_teams () != 4)
+    __builtin_abort ();
+
+  rf[10] = 0.0;
+  rd[15] = 0.0;
+  rcf[10] = 0.0;
+  rcd[15] = 0.0;
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  return 0;
+}
diff --git a/libgomp/testsuite/libgomp.c-c++-common/reduction-2.c b/libgomp/testsuite/libgomp.c-c++-common/reduction-2.c
new file mode 100644
index 0000000..bdcba86
--- /dev/null
+++ b/libgomp/testsuite/libgomp.c-c++-common/reduction-2.c
@@ -0,0 +1,192 @@
+/* C / C++'s logical AND and OR operators take any scalar argument
+   which compares (un)equal to 0 - the result 1 or 0 and of type int.
+
+   In this testcase, the int result is again converted to a floating-poing
+   or complex type.
+
+   While having a floating-point/complex array element with || and && can make
+   sense, having a non-integer/non-bool reduction variable is odd but valid.
+
+   Test: FP reduction variable + integer array.  */
+
+#define N 1024
+char rcf[N];
+short rcd[N];
+int rf[N];
+long rd[N];
+
+int
+reduction_or ()
+{
+  float orf = 0;
+  double ord = 0;
+  _Complex float orfc = 0;
+  _Complex double ordc = 0;
+
+  #pragma omp parallel reduction(||: orf)
+  for (int i=0; i < N; ++i)
+    orf = orf || rf[i];
+
+  #pragma omp parallel for reduction(||: ord)
+  for (int i=0; i < N; ++i)
+    ord = ord || rcd[i];
+
+  #pragma omp parallel for simd reduction(||: orfc)
+  for (int i=0; i < N; ++i)
+    orfc = orfc || rcf[i];
+
+  #pragma omp parallel loop reduction(||: ordc)
+  for (int i=0; i < N; ++i)
+    ordc = ordc || rcd[i];
+
+  return orf + ord + __real__ orfc + __real__ ordc;
+}
+
+int
+reduction_or_teams ()
+{
+  float orf = 0;
+  double ord = 0;
+  _Complex float orfc = 0;
+  _Complex double ordc = 0;
+
+  #pragma omp teams distribute parallel for reduction(||: orf)
+  for (int i=0; i < N; ++i)
+    orf = orf || rf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(||: ord)
+  for (int i=0; i < N; ++i)
+    ord = ord || rcd[i];
+
+  #pragma omp teams distribute parallel for reduction(||: orfc)
+  for (int i=0; i < N; ++i)
+    orfc = orfc || rcf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(||: ordc)
+  for (int i=0; i < N; ++i)
+    ordc = ordc || rcd[i];
+
+  return orf + ord + __real__ orfc + __real__ ordc;
+}
+
+int
+reduction_and ()
+{
+  float andf = 1;
+  double andd = 1;
+  _Complex float andfc = 1;
+  _Complex double anddc = 1;
+
+  #pragma omp parallel reduction(&&: andf)
+  for (int i=0; i < N; ++i)
+    andf = andf && rf[i];
+
+  #pragma omp parallel for reduction(&&: andd)
+  for (int i=0; i < N; ++i)
+    andd = andd && rcd[i];
+
+  #pragma omp parallel for simd reduction(&&: andfc)
+  for (int i=0; i < N; ++i)
+    andfc = andfc && rcf[i];
+
+  #pragma omp parallel loop reduction(&&: anddc)
+  for (int i=0; i < N; ++i)
+    anddc = anddc && rcd[i];
+
+  return andf + andd + __real__ andfc + __real__ anddc;
+}
+
+int
+reduction_and_teams ()
+{
+  float andf = 1;
+  double andd = 1;
+  _Complex float andfc = 1;
+  _Complex double anddc = 1;
+
+  #pragma omp teams distribute parallel for reduction(&&: andf)
+  for (int i=0; i < N; ++i)
+    andf = andf && rf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(&&: andd)
+  for (int i=0; i < N; ++i)
+    andd = andd && rcd[i];
+
+  #pragma omp teams distribute parallel for reduction(&&: andfc)
+  for (int i=0; i < N; ++i)
+    andfc = andfc && rcf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(&&: anddc)
+  for (int i=0; i < N; ++i)
+    anddc = anddc && rcd[i];
+
+  return andf + andd + __real__ andfc + __real__ anddc;
+}
+
+int
+main ()
+{
+  for (int i = 0; i < N; ++i)
+    {
+      rf[i] = 0;
+      rd[i] = 0;
+      rcf[i] = 0;
+      rcd[i] = 0;
+    }
+
+  if (reduction_or () != 0)
+    __builtin_abort ();
+  if (reduction_or_teams () != 0)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  rf[10] = 1;
+  rd[15] = 1;
+  rcf[10] = 1;
+  rcd[15] = 1;
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  for (int i = 0; i < N; ++i)
+    {
+      rf[i] = 1;
+      rd[i] = 1;
+      rcf[i] = 1;
+      rcd[i] = 1;
+    }
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 4)
+    __builtin_abort ();
+  if (reduction_and_teams () != 4)
+    __builtin_abort ();
+
+  rf[10] = 0;
+  rd[15] = 0;
+  rcf[10] = 0;
+  rcd[15] = 0;
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  return 0;
+}
diff --git a/libgomp/testsuite/libgomp.c-c++-common/reduction-3.c b/libgomp/testsuite/libgomp.c-c++-common/reduction-3.c
new file mode 100644
index 0000000..0f09aab
--- /dev/null
+++ b/libgomp/testsuite/libgomp.c-c++-common/reduction-3.c
@@ -0,0 +1,192 @@
+/* C / C++'s logical AND and OR operators take any scalar argument
+   which compares (un)equal to 0 - the result 1 or 0 and of type int.
+
+   In this testcase, the int result is again converted to a floating-poing
+   or complex type.
+
+   While having a floating-point/complex array element with || and && can make
+   sense, having a non-integer/non-bool reduction variable is odd but valid.
+
+   Test: integer reduction variable + FP array.  */
+
+#define N 1024
+_Complex float rcf[N];
+_Complex double rcd[N];
+float rf[N];
+double rd[N];
+
+int
+reduction_or ()
+{
+  char orf = 0;
+  short ord = 0;
+  int orfc = 0;
+  long ordc = 0;
+
+  #pragma omp parallel reduction(||: orf)
+  for (int i=0; i < N; ++i)
+    orf = orf || rf[i];
+
+  #pragma omp parallel for reduction(||: ord)
+  for (int i=0; i < N; ++i)
+    ord = ord || rcd[i];
+
+  #pragma omp parallel for simd reduction(||: orfc)
+  for (int i=0; i < N; ++i)
+    orfc = orfc || rcf[i];
+
+  #pragma omp parallel loop reduction(||: ordc)
+  for (int i=0; i < N; ++i)
+    ordc = ordc || rcd[i];
+
+  return orf + ord + __real__ orfc + __real__ ordc;
+}
+
+int
+reduction_or_teams ()
+{
+  char orf = 0;
+  short ord = 0;
+  int orfc = 0;
+  long ordc = 0;
+
+  #pragma omp teams distribute parallel for reduction(||: orf)
+  for (int i=0; i < N; ++i)
+    orf = orf || rf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(||: ord)
+  for (int i=0; i < N; ++i)
+    ord = ord || rcd[i];
+
+  #pragma omp teams distribute parallel for reduction(||: orfc)
+  for (int i=0; i < N; ++i)
+    orfc = orfc || rcf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(||: ordc)
+  for (int i=0; i < N; ++i)
+    ordc = ordc || rcd[i];
+
+  return orf + ord + __real__ orfc + __real__ ordc;
+}
+
+int
+reduction_and ()
+{
+  unsigned char andf = 1;
+  unsigned short andd = 1;
+  unsigned int andfc = 1;
+  unsigned long anddc = 1;
+
+  #pragma omp parallel reduction(&&: andf)
+  for (int i=0; i < N; ++i)
+    andf = andf && rf[i];
+
+  #pragma omp parallel for reduction(&&: andd)
+  for (int i=0; i < N; ++i)
+    andd = andd && rcd[i];
+
+  #pragma omp parallel for simd reduction(&&: andfc)
+  for (int i=0; i < N; ++i)
+    andfc = andfc && rcf[i];
+
+  #pragma omp parallel loop reduction(&&: anddc)
+  for (int i=0; i < N; ++i)
+    anddc = anddc && rcd[i];
+
+  return andf + andd + __real__ andfc + __real__ anddc;
+}
+
+int
+reduction_and_teams ()
+{
+  unsigned char andf = 1;
+  unsigned short andd = 1;
+  unsigned int andfc = 1;
+  unsigned long anddc = 1;
+
+  #pragma omp teams distribute parallel for reduction(&&: andf)
+  for (int i=0; i < N; ++i)
+    andf = andf && rf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(&&: andd)
+  for (int i=0; i < N; ++i)
+    andd = andd && rcd[i];
+
+  #pragma omp teams distribute parallel for reduction(&&: andfc)
+  for (int i=0; i < N; ++i)
+    andfc = andfc && rcf[i];
+
+  #pragma omp teams distribute parallel for simd reduction(&&: anddc)
+  for (int i=0; i < N; ++i)
+    anddc = anddc && rcd[i];
+
+  return andf + andd + __real__ andfc + __real__ anddc;
+}
+
+int
+main ()
+{
+  for (int i = 0; i < N; ++i)
+    {
+      rf[i] = 0;
+      rd[i] = 0;
+      rcf[i] = 0;
+      rcd[i] = 0;
+    }
+
+  if (reduction_or () != 0)
+    __builtin_abort ();
+  if (reduction_or_teams () != 0)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  rf[10] = 1.0;
+  rd[15] = 1.0;
+  rcf[10] = 1.0;
+  rcd[15] = 1.0i;
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  for (int i = 0; i < N; ++i)
+    {
+      rf[i] = 1;
+      rd[i] = 1;
+      rcf[i] = 1;
+      rcd[i] = 1;
+    }
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 4)
+    __builtin_abort ();
+  if (reduction_and_teams () != 4)
+    __builtin_abort ();
+
+  rf[10] = 0.0;
+  rd[15] = 0.0;
+  rcf[10] = 0.0;
+  rcd[15] = 0.0;
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  return 0;
+}
diff --git a/libgomp/testsuite/libgomp.c-c++-common/reduction-4.c b/libgomp/testsuite/libgomp.c-c++-common/reduction-4.c
new file mode 100644
index 0000000..a465e10
--- /dev/null
+++ b/libgomp/testsuite/libgomp.c-c++-common/reduction-4.c
@@ -0,0 +1,194 @@
+/* C / C++'s logical AND and OR operators take any scalar argument
+   which compares (un)equal to 0 - the result 1 or 0 and of type int.
+
+   In this testcase, the int result is again converted to an integer complex
+   type.
+
+   While having a floating-point/complex array element with || and && can make
+   sense, having a complex reduction variable is odd but valid.
+
+   Test: int complex reduction variable + int complex array.  */
+
+#define N 1024
+_Complex char rcc[N];
+_Complex short rcs[N];
+_Complex int rci[N];
+_Complex long long rcl[N];
+
+int
+reduction_or ()
+{
+  _Complex char orc = 0;
+  _Complex short ors = 0;
+  _Complex int ori = 0;
+  _Complex long orl = 0;
+
+  #pragma omp parallel reduction(||: orc)
+  for (int i=0; i < N; ++i)
+    orc = orc || rcl[i];
+
+  #pragma omp parallel for reduction(||: ors)
+  for (int i=0; i < N; ++i)
+    ors = ors || rci[i];
+
+  #pragma omp parallel for simd reduction(||: ori)
+  for (int i=0; i < N; ++i)
+    ori = ori || rcs[i];
+
+  #pragma omp parallel loop reduction(||: orl)
+  for (int i=0; i < N; ++i)
+    orl = orl || rcc[i];
+
+  return __real__ (orc + ors + ori + orl) + __imag__ (orc + ors + ori + orl);
+}
+
+int
+reduction_or_teams ()
+{
+  _Complex char orc = 0;
+  _Complex short ors = 0;
+  _Complex int ori = 0;
+  _Complex long orl = 0;
+
+  #pragma omp teams distribute parallel for reduction(||: orc)
+  for (int i=0; i < N; ++i)
+    orc = orc || rcc[i];
+
+  #pragma omp teams distribute parallel for simd reduction(||: ors)
+  for (int i=0; i < N; ++i)
+    ors = ors || rcs[i];
+
+  #pragma omp teams distribute parallel for reduction(||: ori)
+  for (int i=0; i < N; ++i)
+    ori = ori || rci[i];
+
+  #pragma omp teams distribute parallel for simd reduction(||: orl)
+  for (int i=0; i < N; ++i)
+    orl = orl || rcl[i];
+
+  return __real__ (orc + ors + ori + orl) + __imag__ (orc + ors + ori + orl);
+}
+
+int
+reduction_and ()
+{
+  _Complex char andc = 1;
+  _Complex short ands = 1;
+  _Complex int andi = 1;
+  _Complex long andl = 1;
+
+  #pragma omp parallel reduction(&&: andc)
+  for (int i=0; i < N; ++i)
+    andc = andc && rcc[i];
+
+  #pragma omp parallel for reduction(&&: ands)
+  for (int i=0; i < N; ++i)
+    ands = ands && rcs[i];
+
+  #pragma omp parallel for simd reduction(&&: andi)
+  for (int i=0; i < N; ++i)
+    andi = andi && rci[i];
+
+  #pragma omp parallel loop reduction(&&: andl)
+  for (int i=0; i < N; ++i)
+    andl = andl && rcl[i];
+
+  return __real__ (andc + ands + andi + andl)
+	 + __imag__ (andc + ands + andi + andl);
+}
+
+int
+reduction_and_teams ()
+{
+  _Complex char andc = 1;
+  _Complex short ands = 1;
+  _Complex int andi = 1;
+  _Complex long andl = 1;
+
+  #pragma omp teams distribute parallel for reduction(&&: andc)
+  for (int i=0; i < N; ++i)
+    andc = andc && rcl[i];
+
+  #pragma omp teams distribute parallel for simd reduction(&&: ands)
+  for (int i=0; i < N; ++i)
+    ands = ands && rci[i];
+
+  #pragma omp teams distribute parallel for reduction(&&: andi)
+  for (int i=0; i < N; ++i)
+    andi = andi && rcs[i];
+
+  #pragma omp teams distribute parallel for simd reduction(&&: andl)
+  for (int i=0; i < N; ++i)
+    andl = andl && rcc[i];
+
+  return __real__ (andc + ands + andi + andl)
+	 + __imag__ (andc + ands + andi + andl);
+}
+
+int
+main ()
+{
+  for (int i = 0; i < N; ++i)
+    {
+      rcc[i] = 0;
+      rcs[i] = 0;
+      rci[i] = 0;
+      rcl[i] = 0;
+    }
+
+  if (reduction_or () != 0)
+    __builtin_abort ();
+  if (reduction_or_teams () != 0)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  rcc[10] = 1.0;
+  rcs[15] = 1.0i;
+  rci[10] = 1.0;
+  rcl[15] = 1.0i;
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  for (int i = 0; i < N; ++i)
+    {
+      rcc[i] = 1;
+      rcs[i] = 1i;
+      rci[i] = 1;
+      rcl[i] = 1 + 1i;
+    }
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 4)
+    __builtin_abort ();
+  if (reduction_and_teams () != 4)
+    __builtin_abort ();
+
+  rcc[10] = 0.0;
+  rcs[15] = 0.0;
+  rci[10] = 0.0;
+  rcl[15] = 0.0;
+
+  if (reduction_or () != 4)
+    __builtin_abort ();
+  if (reduction_or_teams () != 4)
+    __builtin_abort ();
+  if (reduction_and () != 0)
+    __builtin_abort ();
+  if (reduction_and_teams () != 0)
+    __builtin_abort ();
+
+  return 0;
+}