x86-64: Verify that _dl_runtime_resolve preserves vector registers

On x86-64, _dl_runtime_resolve must preserve the first 8 vector
registers.  Add 3 _dl_runtime_resolve tests to verify that SSE,
AVX and AVX512 registers are preserved.

	* sysdeps/x86_64/Makefile (tests): Add tst-sse, tst-avx and
	tst-avx512.
	(test-extras): Add tst-avx-aux and tst-avx512-aux.
	(extra-test-objs): Add tst-avx-aux.o and tst-avx512-aux.o.
	(modules-names): Add tst-ssemod, tst-avxmod and tst-avx512mod.
	($(objpfx)tst-sse): New rule.
	($(objpfx)tst-avx): Likewise.
	($(objpfx)tst-avx512): Likewise.
	(CFLAGS-tst-avx-aux.c): New.
	(CFLAGS-tst-avxmod.c): Likewise.
	(CFLAGS-tst-avx512-aux.c): Likewise.
	(CFLAGS-tst-avx512mod.c): Likewise.
	* sysdeps/x86_64/tst-avx-aux.c: New file.
	* sysdeps/x86_64/tst-avx.c: Likewise.
	* sysdeps/x86_64/tst-avx512-aux.c: Likewise.
	* sysdeps/x86_64/tst-avx512.c: Likewise.
	* sysdeps/x86_64/tst-avx512mod.c: Likewise.
	* sysdeps/x86_64/tst-avxmod.c: Likewise.
	* sysdeps/x86_64/tst-sse.c: Likewise.
	* sysdeps/x86_64/tst-ssemod.c: Likewise.

1 files changed, 46 insertions, 0 deletions

diff --git a/sysdeps/x86_64/tst-ssemod.c b/sysdeps/x86_64/tst-ssemod.c
new file mode 100644
index 0000000000..907a64c69e
--- /dev/null
+++ b/sysdeps/x86_64/tst-ssemod.c
@@ -0,0 +1,46 @@
+/* Test case for x86-64 preserved SSE registers in dynamic linker.  */
+
+#include <stdlib.h>
+#include <string.h>
+#include <immintrin.h>
+
+__m128i
+sse_test (__m128i x0, __m128i x1, __m128i x2, __m128i x3,
+	  __m128i x4, __m128i x5, __m128i x6, __m128i x7)
+{
+  __m128i xmm;
+
+  xmm = _mm_set1_epi32 (0);
+  if (memcmp (&xmm, &x0, sizeof (xmm)))
+    abort ();
+
+  xmm = _mm_set1_epi32 (1);
+  if (memcmp (&xmm, &x1, sizeof (xmm)))
+    abort ();
+
+  xmm = _mm_set1_epi32 (2);
+  if (memcmp (&xmm, &x2, sizeof (xmm)))
+    abort ();
+
+  xmm = _mm_set1_epi32 (3);
+  if (memcmp (&xmm, &x3, sizeof (xmm)))
+    abort ();
+
+  xmm = _mm_set1_epi32 (4);
+  if (memcmp (&xmm, &x4, sizeof (xmm)))
+    abort ();
+
+  xmm = _mm_set1_epi32 (5);
+  if (memcmp (&xmm, &x5, sizeof (xmm)))
+    abort ();
+
+  xmm = _mm_set1_epi32 (6);
+  if (memcmp (&xmm, &x6, sizeof (xmm)))
+    abort ();
+
+  xmm = _mm_set1_epi32 (7);
+  if (memcmp (&xmm, &x7, sizeof (xmm)))
+    abort ();
+
+  return _mm_set1_epi32 (0x12349876);
+}