Move INIT_ARCH_EXT call from libm-test-support to libm-test-driver.

libmvec tests involve calling INIT_ARCH_EXT during initialization then
CHECK_ARCH_EXT before testing each function to see if the processor
being used for testing supports the required instruction set
extensions.

After my refactoring of libm-test infrastructure, the INIT_ARCH_EXT
call is in libm-test-support.c, built only once per floating-point
type.  Now, in fact all definitions of this macro are empty, but given
that the definitions in sysdeps/x86_64/fpu/math-tests-arch.h are
conditional on REQUIRE_* macros defined in particular vector tests, it
seems more correct for the INIT_ARCH_EXT call to go instead in
libm-test-driver.c which gets built separately with those REQUIRE_*
macros properly defined.  This patch moves the call there.

Tested for x86_64 and x86.

	* math/libm-test-support.h: Do not include <math-tests-arch.h>
	here.
	* math/libm-test-support.c (libm_test_init): Do not call
	INIT_ARCH_EXT here.
	* math/libm-test-driver.c: Include <math-tests-arch.h>.
	(main): Call INIT_ARCH_EXT.

4 files changed, 12 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index 27f41f7ad0..f83f37ad7c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2017-02-14  Joseph Myers  <joseph@codesourcery.com>
+
+	* math/libm-test-support.h: Do not include <math-tests-arch.h>
+	here.
+	* math/libm-test-support.c (libm_test_init): Do not call
+	INIT_ARCH_EXT here.
+	* math/libm-test-driver.c: Include <math-tests-arch.h>.
+	(main): Call INIT_ARCH_EXT.
+
 2017-02-12  Gabriel F. T. Gomes  <gftg@linux.vnet.ibm.com>
 
 	[BZ #21130]
diff --git a/math/libm-test-driver.c b/math/libm-test-driver.c
index 1539cd7e4d..d24c5aadaf 100644
--- a/math/libm-test-driver.c
+++ b/math/libm-test-driver.c
@@ -18,6 +18,8 @@
 
 #include "libm-test-support.h"
 
+#include <math-tests-arch.h>
+
 /* Flags set by the including file.  */
 const int flag_test_errno = TEST_ERRNO;
 const int flag_test_exceptions = TEST_EXCEPTIONS;
@@ -1010,6 +1012,7 @@ int
 main (int argc, char **argv)
 {
   libm_test_init (argc, argv);
+  INIT_ARCH_EXT;
   do_test ();
   return libm_test_finish ();
 }
diff --git a/math/libm-test-support.c b/math/libm-test-support.c
index d387f813d0..8890c1cbdd 100644
--- a/math/libm-test-support.c
+++ b/math/libm-test-support.c
@@ -1182,8 +1182,6 @@ libm_test_init (int argc, char **argv)
   initialize ();
   fputs (test_msg, stdout);
 
-  INIT_ARCH_EXT;
-
   check_ulp ();
 }
 
diff --git a/math/libm-test-support.h b/math/libm-test-support.h
index 5c9af04f1a..2b95497148 100644
--- a/math/libm-test-support.h
+++ b/math/libm-test-support.h
@@ -30,7 +30,6 @@
 #include <stdio.h>
 #include <tininess.h>
 #include <math-tests.h>
-#include <math-tests-arch.h>
 #include <nan-high-order-bit.h>
 
 extern const int flag_test_errno;