Addition of testing infrastructure for vector math functions.

We test vector math functions using scalar tests infrastructure with
help of special wrappers from scalar versions to vector ones. Wrapper
implemented using platform specific vector types and placed in separate
file for compilation with architecture specific options, main part of
test has no such options. With help of system of definitions unfolding
of which is drived from test code we have wrapper called in individual
testing function instead of scalar function. Also system of definitions
includes generated during make check header math/libm-have-vector-test.h
with series of conditional definitions which help to avoid build fails
for functions having no vector versions; runtime architecture check
to prevent runtime fails of test run on inappropriate hardware.

    * math/Makefile: Added rules for vector tests.
    * math/gen-libm-have-vector-test.sh: Added generation of wrapper
    declaration under condition.
    * math/test-double-vlen2.h: New file.
    * math/test-double-vlen4.h: New file.
    * math/test-double-vlen8.h: New file.
    * math/test-vec-loop.h: Added initialization macro.
    * sysdeps/x86_64/fpu/Makefile: Added variables for vector tests.
    * sysdeps/x86_64/fpu/libm-test-ulps: Regenarated.
    * sysdeps/x86_64/fpu/math-tests-arch.h: New file.
    * sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c: New file.
    * sysdeps/x86_64/fpu/test-double-vlen2.c: New file.
    * sysdeps/x86_64/fpu/test-double-vlen4-avx2-wrappers.c: New file.
    * sysdeps/x86_64/fpu/test-double-vlen4-avx2.c: New file.
    * sysdeps/x86_64/fpu/test-double-vlen4-wrappers.c: New file.
    * sysdeps/x86_64/fpu/test-double-vlen4.c: New file.
    * sysdeps/x86_64/fpu/test-double-vlen8-wrappers.c: New file.
    * sysdeps/x86_64/fpu/test-double-vlen8.c: New file.

6 files changed, 288 insertions, 9 deletions

diff --git a/math/Makefile b/math/Makefile
index 9a3cf3228b..8f14f255df 100644
--- a/math/Makefile
+++ b/math/Makefile
@@ -115,8 +115,9 @@ tests-static = test-fpucw-static test-fpucw-ieee-static
 test-longdouble-yes = test-ldouble test-ildoubl
 
 ifneq (no,$(PERL))
+libm-vec-tests = $(addprefix test-,$(libmvec-tests))
 libm-tests = test-float test-double $(test-longdouble-$(long-double-fcts)) \
-	test-ifloat test-idouble
+	test-ifloat test-idouble $(libm-vec-tests)
 libm-tests.o = $(addsuffix .o,$(libm-tests))
 
 tests += $(libm-tests)
@@ -143,8 +144,22 @@ $(objpfx)test-double.o: $(objpfx)libm-test.stmp
 $(objpfx)test-idouble.o: $(objpfx)libm-test.stmp
 $(objpfx)test-ldouble.o: $(objpfx)libm-test.stmp
 $(objpfx)test-ildoubl.o: $(objpfx)libm-test.stmp
+$(addprefix $(objpfx), $(addsuffix .o, $(libm-vec-tests))): $(objpfx)libm-test.stmp
 endif
 
+libm-test-fast-math-cflags = -fno-builtin -D__FAST_MATH__ -DTEST_FAST_MATH
+libm-test-vec-cflags = $(libm-test-fast-math-cflags) -fno-inline \
+		       -ffloat-store -D_OPENMP=201307 -Wno-unknown-pragmas
+
+CFLAGS-test-double-vlen2.c = $(libm-test-vec-cflags)
+CFLAGS-test-double-vlen2-wrappers.c = $(double-vlen2-arch-ext-cflags)
+
+CFLAGS-test-double-vlen4.c = $(libm-test-vec-cflags)
+CFLAGS-test-double-vlen4-wrappers.c = $(double-vlen4-arch-ext-cflags)
+
+CFLAGS-test-double-vlen8.c = $(libm-test-vec-cflags)
+CFLAGS-test-double-vlen8-wrappers.c = $(double-vlen8-arch-ext-cflags)
+
 CFLAGS-test-float.c = -fno-inline -ffloat-store -fno-builtin
 CFLAGS-test-double.c = -fno-inline -ffloat-store -fno-builtin
 CFLAGS-test-ldouble.c = -fno-inline -ffloat-store -fno-builtin
@@ -155,12 +170,12 @@ CFLAGS-test-tgmath.c = -fno-builtin
 CFLAGS-test-tgmath2.c = -fno-builtin
 CFLAGS-test-tgmath-ret.c = -fno-builtin
 CFLAGS-test-powl.c = -fno-builtin
-CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
-			 -DTEST_FAST_MATH -fno-builtin
-CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
-			  -DTEST_FAST_MATH -fno-builtin
-CPPFLAGS-test-ildoubl.c = -U__LIBC_INTERNAL_MATH_INLINES -D__FAST_MATH__ \
-			  -DTEST_FAST_MATH -fno-builtin
+CPPFLAGS-test-ifloat.c = -U__LIBC_INTERNAL_MATH_INLINES \
+			 $(libm-test-fast-math-cflags)
+CPPFLAGS-test-idouble.c = -U__LIBC_INTERNAL_MATH_INLINES \
+			  $(libm-test-fast-math-cflags)
+CPPFLAGS-test-ildoubl.c = -U__LIBC_INTERNAL_MATH_INLINES \
+			  $(libm-test-fast-math-cflags)
 
 
 # The -lieee module sets the _LIB_VERSION_ switch to IEEE mode
@@ -236,8 +251,10 @@ $(objpfx)libieee.a: $(objpfx)ieee-math.o
 	$(patsubst %/,cd % &&,$(objpfx)) \
 	$(LN_S) $(<F) $(@F)
 
-$(addprefix $(objpfx),$(filter-out $(tests-static),$(tests))): $(libm)
+$(addprefix $(objpfx),$(filter-out $(tests-static) $(libm-vec-tests),$(tests))): $(libm)
 $(addprefix $(objpfx),$(tests-static)): $(objpfx)libm.a
+$(addprefix $(objpfx), $(libm-vec-tests)): $(objpfx)%: $(libm) $(libmvec) \
+					   $(objpfx)init-arch.o $(objpfx)%-wrappers.o
 
 gmp-objs = $(patsubst %,$(common-objpfx)stdlib/%.o,\
 		      add_n sub_n cmp addmul_1 mul_1 mul_n divmod_1 \
diff --git a/math/gen-libm-have-vector-test.sh b/math/gen-libm-have-vector-test.sh
index eeddf76b70..8c36078662 100644
--- a/math/gen-libm-have-vector-test.sh
+++ b/math/gen-libm-have-vector-test.sh
@@ -25,6 +25,7 @@ print_defs()
   echo "#if defined TEST_VECTOR_$1 && TEST_VECTOR_$1"
   echo "# define HAVE_VECTOR_$1 1"
   echo "# define ${1}_VEC_SUFF WRAPPER_NAME ($1)"
+  echo "WRAPPER_DECL$2 (WRAPPER_NAME ($1))"
   echo "#else"
   echo "# define HAVE_VECTOR_$1 0"
   echo "# define ${1}_VEC_SUFF $1"
@@ -32,12 +33,18 @@ print_defs()
   echo
 }
 
-for func in $(grep ALL_RM_TEST libm-test.inc | grep -v define | sed -r "s/.*\(//; s/,.*//"); do
+for func in $(cat libm-test.inc | grep ALL_RM_TEST | grep -v define | grep -v RUN_TEST_LOOP_ff_f | sed -r "s/.*\(//; s/,.*//" ); do
   print_defs ${func}
   print_defs ${func}f
   print_defs ${func}l
 done
 
+for func in $(cat libm-test.inc | grep ALL_RM_TEST | grep RUN_TEST_LOOP_ff_f | sed -r "s/.*\(//; s/,.*//" ); do
+  print_defs ${func} "_ff"
+  print_defs ${func}f "_ff"
+  print_defs ${func}l "_ff"
+done
+
 # When all functions will use ALL_RM_TEST instead of using START directly,
 # this code can be removed.
 for func in $(grep 'START.*;$' libm-test.inc | sed -r "s/.*\(//; s/,.*//"); do
diff --git a/math/test-double-vlen2.h b/math/test-double-vlen2.h
new file mode 100644
index 0000000000..37d70604e5
--- /dev/null
+++ b/math/test-double-vlen2.h
@@ -0,0 +1,71 @@
+/* Definitions for double vector tests with vector length 2.
+   Copyright (C) 2014-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define FLOAT double
+#define FUNC(function) function
+#define TEST_MSG "testing double vector math (without inline functions)\n"
+#define MATHCONST(x) x
+#define CHOOSE(Clongdouble,Cdouble,Cfloat,Cinlinelongdouble,Cinlinedouble,Cinlinefloat) Cdouble
+#define PRINTF_EXPR "e"
+#define PRINTF_XEXPR "a"
+#define PRINTF_NEXPR "f"
+#define TEST_DOUBLE 1
+#define TEST_MATHVEC 1
+
+#ifndef __NO_MATH_INLINES
+# define __NO_MATH_INLINES
+#endif
+
+#define EXCEPTION_TESTS_double 0
+#define ROUNDING_TESTS_double(MODE) ((MODE) == FE_TONEAREST)
+
+#define CNCT(x, y) x ## y
+#define CONCAT(a, b) CNCT (a, b)
+
+#define VEC_SUFF _vlen2
+#define WRAPPER_NAME(function) CONCAT (function, VEC_SUFF)
+
+#define FUNC_TEST(function) function ## _VEC_SUFF
+
+#define WRAPPER_DECL(function) extern FLOAT function (FLOAT);
+#define WRAPPER_DECL_ff(function) extern FLOAT function (FLOAT, FLOAT);
+
+// Wrapper from scalar to vector function with vector length 8.
+#define VECTOR_WRAPPER(scalar_func, vector_func) \
+extern VEC_TYPE vector_func (VEC_TYPE);		\
+FLOAT scalar_func (FLOAT x)			\
+{						\
+  int i;					\
+  VEC_TYPE mx;					\
+  INIT_VEC_LOOP (mx, x, 2);			\
+  VEC_TYPE mr = vector_func (mx);		\
+  TEST_VEC_LOOP (2);				\
+}
+
+// Wrapper from scalar 2 argument function to vector one.
+#define VECTOR_WRAPPER_ff(scalar_func, vector_func) 	\
+extern VEC_TYPE vector_func (VEC_TYPE, VEC_TYPE);	\
+FLOAT scalar_func (FLOAT x, FLOAT y)		\
+{						\
+  int i;					\
+  VEC_TYPE mx;					\
+  INIT_VEC_LOOP (mx, x, 2);			\
+  INIT_VEC_LOOP (my, y, 2);			\
+  VEC_TYPE mr = vector_func (mx, my);		\
+  TEST_VEC_LOOP (2);				\
+}
diff --git a/math/test-double-vlen4.h b/math/test-double-vlen4.h
new file mode 100644
index 0000000000..4fca9d80b0
--- /dev/null
+++ b/math/test-double-vlen4.h
@@ -0,0 +1,71 @@
+/* Definitions for double vector tests with vector length 4.
+   Copyright (C) 2014-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define FLOAT double
+#define FUNC(function) function
+#define TEST_MSG "testing double vector math (without inline functions)\n"
+#define MATHCONST(x) x
+#define CHOOSE(Clongdouble,Cdouble,Cfloat,Cinlinelongdouble,Cinlinedouble,Cinlinefloat) Cdouble
+#define PRINTF_EXPR "e"
+#define PRINTF_XEXPR "a"
+#define PRINTF_NEXPR "f"
+#define TEST_DOUBLE 1
+#define TEST_MATHVEC 1
+
+#ifndef __NO_MATH_INLINES
+# define __NO_MATH_INLINES
+#endif
+
+#define EXCEPTION_TESTS_double 0
+#define ROUNDING_TESTS_double(MODE) ((MODE) == FE_TONEAREST)
+
+#define CNCT(x, y) x ## y
+#define CONCAT(a, b) CNCT (a, b)
+
+#define VEC_SUFF _vlen4
+#define WRAPPER_NAME(function) CONCAT (function, VEC_SUFF)
+
+#define FUNC_TEST(function) function ## _VEC_SUFF
+
+#define WRAPPER_DECL(function) extern FLOAT function (FLOAT);
+#define WRAPPER_DECL_ff(function) extern FLOAT function (FLOAT, FLOAT);
+
+// Wrapper from scalar to vector function with vector length 4.
+#define VECTOR_WRAPPER(scalar_func, vector_func) \
+extern VEC_TYPE vector_func (VEC_TYPE);		\
+FLOAT scalar_func (FLOAT x)			\
+{						\
+  int i;					\
+  VEC_TYPE mx;					\
+  INIT_VEC_LOOP (mx, x, 4);			\
+  VEC_TYPE mr = vector_func (mx);		\
+  TEST_VEC_LOOP (4);				\
+}
+
+// Wrapper from scalar 2 argument function to vector one.
+#define VECTOR_WRAPPER_ff(scalar_func, vector_func) 	\
+extern VEC_TYPE vector_func (VEC_TYPE, VEC_TYPE);	\
+FLOAT scalar_func (FLOAT x, FLOAT y)		\
+{						\
+  int i;					\
+  VEC_TYPE mx, my;				\
+  INIT_VEC_LOOP (mx, x, 4);			\
+  INIT_VEC_LOOP (my, y, 4);			\
+  VEC_TYPE mr = vector_func (mx, my);		\
+  TEST_VEC_LOOP (4);				\
+}
diff --git a/math/test-double-vlen8.h b/math/test-double-vlen8.h
new file mode 100644
index 0000000000..6780e81513
--- /dev/null
+++ b/math/test-double-vlen8.h
@@ -0,0 +1,71 @@
+/* Definitions for double vector tests with vector length 8.
+   Copyright (C) 2014-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define FLOAT double
+#define FUNC(function) function
+#define TEST_MSG "testing double vector math (without inline functions)\n"
+#define MATHCONST(x) x
+#define CHOOSE(Clongdouble,Cdouble,Cfloat,Cinlinelongdouble,Cinlinedouble,Cinlinefloat) Cdouble
+#define PRINTF_EXPR "e"
+#define PRINTF_XEXPR "a"
+#define PRINTF_NEXPR "f"
+#define TEST_DOUBLE 1
+#define TEST_MATHVEC 1
+
+#ifndef __NO_MATH_INLINES
+# define __NO_MATH_INLINES
+#endif
+
+#define EXCEPTION_TESTS_double 0
+#define ROUNDING_TESTS_double(MODE) ((MODE) == FE_TONEAREST)
+
+#define CNCT(x, y) x ## y
+#define CONCAT(a, b) CNCT (a, b)
+
+#define VEC_SUFF _vlen8
+#define WRAPPER_NAME(function) CONCAT (function, VEC_SUFF)
+
+#define FUNC_TEST(function) function ## _VEC_SUFF
+
+#define WRAPPER_DECL(function) extern FLOAT function (FLOAT);
+#define WRAPPER_DECL_ff(function) extern FLOAT function (FLOAT, FLOAT);
+
+// Wrapper from scalar to vector function with vector length 8.
+#define VECTOR_WRAPPER(scalar_func, vector_func) \
+extern VEC_TYPE vector_func (VEC_TYPE);		\
+FLOAT scalar_func (FLOAT x)			\
+{						\
+  int i;					\
+  VEC_TYPE mx;					\
+  INIT_VEC_LOOP (mx, x, 8);			\
+  VEC_TYPE mr = vector_func (mx);		\
+  TEST_VEC_LOOP (8);				\
+}
+
+// Wrapper from scalar 2 argument function to vector one.
+#define VECTOR_WRAPPER_ff(scalar_func, vector_func) 	\
+extern VEC_TYPE vector_func (VEC_TYPE, VEC_TYPE);	\
+FLOAT scalar_func (FLOAT x, FLOAT y)		\
+{						\
+  int i;					\
+  VEC_TYPE mx, my;				\
+  INIT_VEC_LOOP (mx, x, 8);			\
+  INIT_VEC_LOOP (my, y, 8);			\
+  VEC_TYPE mr = vector_func (mx, my);		\
+  TEST_VEC_LOOP (8);				\
+}
diff --git a/math/test-vec-loop.h b/math/test-vec-loop.h
new file mode 100644
index 0000000000..1a76c3ed58
--- /dev/null
+++ b/math/test-vec-loop.h
@@ -0,0 +1,42 @@
+/* Loop macro used in vector math functions tests.
+   Copyright (C) 2014-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* This macro is used in VECTOR_WRAPPER macros for vector tests.  */
+#define TEST_VEC_LOOP(len) 					\
+  do								\
+    {								\
+      for (i = 1; i < len; i++)					\
+        {							\
+          if ((FLOAT) mr[0] != (FLOAT) mr[i])			\
+            {							\
+              return ((FLOAT) mr[0] + 0.1);			\
+            }							\
+        }							\
+      return ((FLOAT) mr[0]);					\
+    }								\
+  while (0)
+
+#define INIT_VEC_LOOP(vec, val, len)				\
+  do								\
+    {								\
+      for (i = 0; i < len; i++)					\
+        {							\
+          vec[i] = val;						\
+        }							\
+    }								\
+  while (0)