avxintrin.h (_mm256_undefined_si256): Define.

2014-03-24  Ulrich Drepper  <drepper@gmail.com>

        * config/i386/avxintrin.h (_mm256_undefined_si256): Define.
        (_mm256_undefined_ps): Define.
        (_mm256_undefined_pd): Define.
        * config/i386/emmintrin.h (_mm_undefined_si128): Define.
        (_mm_undefined_pd): Define.
        * config/i386/xmmintrin.h (_mm_undefined_ps): Define.
        * config/i386/avx512fintrin.h (_mm512_undefined_si512): Define.
        (_mm512_undefined_ps): Define.
        (_mm512_undefined_pd): Define.
        Use _mm*_undefined_*.
        * config/i386/avx2intrin.h: Use _mm*_undefined_*.

From-SVN: r208793

gcc/ChangeLog

+2014-03-24  Ulrich Drepper  <drepper@gmail.com>
+
+	* config/i386/avxintrin.h (_mm256_undefined_si256): Define.
+	(_mm256_undefined_ps): Define.
+	(_mm256_undefined_pd): Define.
+	* config/i386/emmintrin.h (_mm_undefined_si128): Define.
+	(_mm_undefined_pd): Define.
+	* config/i386/xmmintrin.h (_mm_undefined_ps): Define.
+	* config/i386/avx512fintrin.h (_mm512_undefined_si512): Define.
+	(_mm512_undefined_ps): Define.
+	(_mm512_undefined_pd): Define.
+	Use _mm*_undefined_*.
+	* config/i386/avx2intrin.h: Use _mm*_undefined_*.
+
 2014-03-24  Alex Velenko  <Alex.Velenko@arm.com>
 
 	* config/aarch64/aarch64-simd-builtins.def (lshr): DI mode excluded.

gcc/config/i386/avx2intrin.h

@@ -1233,10 +1233,10 @@ extern __inline __m128d
 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
 _mm_i32gather_pd (double const *base, __m128i index, const int scale)
 {
-  __v2df src = _mm_setzero_pd ();
-  __v2df mask = _mm_cmpeq_pd (src, src);
+  __v2df zero = _mm_setzero_pd ();
+  __v2df mask = _mm_cmpeq_pd (zero, zero);
 
-  return (__m128d) __builtin_ia32_gathersiv2df (src,
+  return (__m128d) __builtin_ia32_gathersiv2df (_mm_undefined_pd (),
 						base,
 						(__v4si)index,
 						mask,
@@ -1259,10 +1259,10 @@ extern __inline __m256d
 __attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
 _mm256_i32gather_pd (double const *base, __m128i index, const int scale)
 {
-  __v4df src = _mm256_setzero_pd ();
-  __v4df mask = _mm256_cmp_pd (src, src, _CMP_EQ_OQ);
+  __v4df zero = _mm256_setzero_pd ();
+  __v4df mask = _mm256_cmp_pd (zero, zero, _CMP_EQ_OQ);
 
-  return (__m256d) __builtin_ia32_gathersiv4df (src,
+  return (__m256d) __builtin_ia32_gathersiv4df (_mm256_undefined_pd (),
 						base,
 						(__v4si)index,
 						mask,

gcc/config/i386/avxintrin.h

@@ -1168,6 +1168,27 @@ _mm256_movemask_ps (__m256 __A)
 }
 
 extern __inline __m256d __attribute__((__gnu_inline__, __always_inline__, __artificial__))
+_mm256_undefined_pd (void)
+{
+  __m256d __Y = __Y;
+  return __Y;
+}
+
+extern __inline __m256 __attribute__((__gnu_inline__, __always_inline__, __artificial__))
+_mm256_undefined_ps (void)
+{
+  __m256 __Y = __Y;
+  return __Y;
+}
+
+extern __inline __m256i __attribute__((__gnu_inline__, __always_inline__, __artificial__))
+_mm256_undefined_si256 (void)
+{
+  __m256i __Y = __Y;
+  return __Y;
+}
+
+extern __inline __m256d __attribute__((__gnu_inline__, __always_inline__, __artificial__))
 _mm256_setzero_pd (void)
 {
   return __extension__ (__m256d){ 0.0, 0.0, 0.0, 0.0 };

gcc/config/i386/emmintrin.h

@@ -86,6 +86,14 @@ _mm_setr_pd (double __W, double __X)
   return __extension__ (__m128d){ __W, __X };
 }
 
+/* Create an undefined vector.  */
+extern __inline __m128d __attribute__((__gnu_inline__, __always_inline__, __artificial__))
+_mm_undefined_pd (void)
+{
+  __m128d __Y = __Y;
+  return __Y;
+}
+
 /* Create a vector of zeros.  */
 extern __inline __m128d __attribute__((__gnu_inline__, __always_inline__, __artificial__))
 _mm_setzero_pd (void)
@@ -728,6 +736,14 @@ _mm_move_epi64 (__m128i __A)
   return (__m128i)__builtin_ia32_movq128 ((__v2di) __A);
 }
 
+/* Create an undefined vector.  */
+extern __inline __m128i __attribute__((__gnu_inline__, __always_inline__, __artificial__))
+_mm_undefined_si128 (void)
+{
+  __m128i __Y = __Y;
+  return __Y;
+}
+
 /* Create a vector of zeros.  */
 extern __inline __m128i __attribute__((__gnu_inline__, __always_inline__, __artificial__))
 _mm_setzero_si128 (void)

gcc/config/i386/xmmintrin.h

@@ -102,6 +102,14 @@ typedef float __v4sf __attribute__ ((__vector_size__ (16)));
 #define _MM_FLUSH_ZERO_ON     0x8000
 #define _MM_FLUSH_ZERO_OFF    0x0000
 
+/* Create an undefined vector.  */
+extern __inline __m128 __attribute__((__gnu_inline__, __always_inline__, __artificial__))
+_mm_undefined_ps (void)
+{
+  __m128 __Y = __Y;
+  return __Y;
+}
+
 /* Create a vector of zeros.  */
 extern __inline __m128 __attribute__((__gnu_inline__, __always_inline__, __artificial__))
 _mm_setzero_ps (void)