Avoid SIMD clone dg-do run tests if assembler doesn't support AVX2 (PR lto/59326)

--- gcc/testsuite/gcc.target/i386/i386.exp.jj	2013-01-11 09:02:38.000000000 +0100
+++ gcc/testsuite/gcc.target/i386/i386.exp	2013-11-28 13:36:40.464167773 +0100
@@ -209,18 +209,6 @@  proc check_effective_target_lzcnt { } {
     } "-mlzcnt" ]
 }
 
-# Return 1 if avx2 instructions can be compiled.
-proc check_effective_target_avx2 { } {
-    return [check_no_compiler_messages avx2 object {
-	typedef long long __v4di __attribute__ ((__vector_size__ (32)));
-	__v4di
-	mm256_is32_andnotsi256  (__v4di __X, __v4di __Y)
-        {
-	   return __builtin_ia32_andnotsi256 (__X, __Y);
-	}
-    } "-O0 -mavx2" ]
-}
-
 # Return 1 if bmi instructions can be compiled.
 proc check_effective_target_bmi { } {
     return [check_no_compiler_messages bmi object {
--- gcc/testsuite/lib/target-supports.exp.jj	2013-11-15 09:39:37.000000000 +0100
+++ gcc/testsuite/lib/target-supports.exp	2013-11-28 13:35:54.408422777 +0100
@@ -2146,6 +2146,32 @@  proc check_effective_target_vect_floatui
     return $et_vect_floatuint_cvt_saved
 }
 
+# Return 1 if the target supports #pragma omp declare simd, 0 otherwise.
+#
+# This won't change for different subtargets so cache the result.
+
+proc check_effective_target_vect_simd_clones { } {
+    global et_vect_simd_clones_saved
+
+    if [info exists et_vect_simd_clones_saved] {
+	verbose "check_effective_target_vect_simd_clones: using cached result" 2
+    } else {
+	set et_vect_simd_clones_saved 0
+	if { [istarget i?86-*-*] || [istarget x86_64-*-*] } {
+	    # On i?86/x86_64 #pragma omp declare simd builds a sse2, avx and
+	    # avx2 clone.  Only the right clone for the specified arch will be
+	    # chosen, but still we need to at least be able to assemble
+	    # avx2.
+	    if { [check_effective_target_avx2] } {
+		set et_vect_simd_clones_saved 1
+	    }
+	}
+    }
+
+    verbose "check_effective_target_vect_simd_clones: returning $et_vect_simd_clones_saved" 2
+    return $et_vect_simd_clones_saved
+}
+
 # Return 1 if this is a AArch64 target supporting big endian
 proc check_effective_target_aarch64_big_endian { } {
     return [check_no_compiler_messages aarch64_big_endian assembly {
@@ -5106,6 +5132,18 @@  proc check_effective_target_avx { } {
     } "-O2 -mavx" ]
 }
 
+# Return 1 if avx2 instructions can be compiled.
+proc check_effective_target_avx2 { } {
+    return [check_no_compiler_messages avx2 object {
+	typedef long long __v4di __attribute__ ((__vector_size__ (32)));
+	__v4di
+	mm256_is32_andnotsi256  (__v4di __X, __v4di __Y)
+        {
+	   return __builtin_ia32_andnotsi256 (__X, __Y);
+	}
+    } "-O0 -mavx2" ]
+}
+
 # Return 1 if sse instructions can be compiled.
 proc check_effective_target_sse { } {
     return [check_no_compiler_messages sse object {
--- gcc/testsuite/gcc.dg/vect/vect-simd-clone-1.c.jj	2013-11-27 12:15:14.000000000 +0100
+++ gcc/testsuite/gcc.dg/vect/vect-simd-clone-1.c	2013-11-28 13:24:55.345839723 +0100
@@ -1,3 +1,4 @@ 
+/* { dg-require-effective-target vect_simd_clones } */
 /* { dg-additional-options "-fopenmp-simd" } */
 /* { dg-additional-options "-mavx" { target avx_runtime } } */
 
--- gcc/testsuite/gcc.dg/vect/vect-simd-clone-2.c.jj	2013-11-27 12:15:14.000000000 +0100
+++ gcc/testsuite/gcc.dg/vect/vect-simd-clone-2.c	2013-11-28 13:25:43.158572535 +0100
@@ -1,3 +1,4 @@ 
+/* { dg-require-effective-target vect_simd_clones } */
 /* { dg-additional-options "-fopenmp-simd" } */
 /* { dg-additional-options "-mavx" { target avx_runtime } } */
 
--- gcc/testsuite/gcc.dg/vect/vect-simd-clone-3.c.jj	2013-11-27 12:15:14.000000000 +0100
+++ gcc/testsuite/gcc.dg/vect/vect-simd-clone-3.c	2013-11-28 13:25:46.065577204 +0100
@@ -1,3 +1,4 @@ 
+/* { dg-require-effective-target vect_simd_clones } */
 /* { dg-additional-options "-fopenmp-simd" } */
 /* { dg-additional-options "-mavx" { target avx_runtime } } */
 
--- gcc/testsuite/gcc.dg/vect/vect-simd-clone-4.c.jj	2013-11-27 12:15:14.000000000 +0100
+++ gcc/testsuite/gcc.dg/vect/vect-simd-clone-4.c	2013-11-28 13:25:48.995559597 +0100
@@ -1,3 +1,4 @@ 
+/* { dg-require-effective-target vect_simd_clones } */
 /* { dg-additional-options "-fopenmp-simd" } */
 /* { dg-additional-options "-mavx" { target avx_runtime } } */
 
--- gcc/testsuite/gcc.dg/vect/vect-simd-clone-5.c.jj	2013-11-27 12:15:14.000000000 +0100
+++ gcc/testsuite/gcc.dg/vect/vect-simd-clone-5.c	2013-11-28 13:25:51.973546669 +0100
@@ -1,3 +1,4 @@ 
+/* { dg-require-effective-target vect_simd_clones } */
 /* { dg-additional-options "-fopenmp-simd" } */
 /* { dg-additional-options "-mavx" { target avx_runtime } } */
 
--- gcc/testsuite/gcc.dg/vect/vect-simd-clone-6.c.jj	2013-11-27 12:15:14.000000000 +0100
+++ gcc/testsuite/gcc.dg/vect/vect-simd-clone-6.c	2013-11-28 13:25:56.014520288 +0100
@@ -1,3 +1,4 @@ 
+/* { dg-require-effective-target vect_simd_clones } */
 /* { dg-additional-options "-fopenmp-simd" } */
 /* { dg-additional-options "-mavx" { target avx_runtime } } */
 
--- gcc/testsuite/gcc.dg/vect/vect-simd-clone-7.c.jj	2013-11-27 12:15:14.000000000 +0100
+++ gcc/testsuite/gcc.dg/vect/vect-simd-clone-7.c	2013-11-28 13:25:59.357501867 +0100
@@ -1,3 +1,4 @@ 
+/* { dg-require-effective-target vect_simd_clones } */
 /* { dg-additional-options "-fopenmp-simd" } */
 /* { dg-additional-options "-mavx" { target avx_runtime } } */
 
--- gcc/testsuite/gcc.dg/vect/vect-simd-clone-8.c.jj	2013-11-27 12:15:14.000000000 +0100
+++ gcc/testsuite/gcc.dg/vect/vect-simd-clone-8.c	2013-11-28 13:26:02.247490531 +0100
@@ -1,3 +1,4 @@ 
+/* { dg-require-effective-target vect_simd_clones } */
 /* { dg-additional-options "-fopenmp-simd" } */
 /* { dg-additional-options "-mavx" { target avx_runtime } } */
 
--- gcc/testsuite/gcc.dg/vect/vect-simd-clone-9.c.jj	2013-11-27 12:15:14.000000000 +0100
+++ gcc/testsuite/gcc.dg/vect/vect-simd-clone-9.c	2013-11-28 13:26:05.176474430 +0100
@@ -1,3 +1,4 @@ 
+/* { dg-require-effective-target vect_simd_clones } */
 /* { dg-additional-options "-fopenmp-simd" } */
 /* { dg-additional-options "-mavx" { target avx_runtime } } */
 
--- gcc/testsuite/gcc.dg/vect/vect-simd-clone-10.c.jj	2013-11-27 12:15:14.000000000 +0100
+++ gcc/testsuite/gcc.dg/vect/vect-simd-clone-10.c	2013-11-28 13:25:07.801776994 +0100
@@ -1,3 +1,4 @@ 
+/* { dg-require-effective-target vect_simd_clones } */
 /* { dg-additional-options "-fopenmp-simd" } */
 /* { dg-additional-options "-mavx" { target avx_runtime } } */
 /* { dg-additional-sources vect-simd-clone-10a.c } */
--- gcc/testsuite/gcc.dg/vect/vect-simd-clone-11.c.jj	2013-11-27 12:15:14.000000000 +0100
+++ gcc/testsuite/gcc.dg/vect/vect-simd-clone-11.c	2013-11-28 13:25:18.300726999 +0100
@@ -1,3 +1,4 @@ 
+/* { dg-require-effective-target vect_simd_clones } */
 /* { dg-additional-options "-fopenmp-simd" } */
 /* { dg-additional-options "-mavx" { target avx_runtime } } */