http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47840

Uros Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2011.02.21 19:45:17
         AssignedTo|unassigned at gcc dot       |ubizjak at gmail dot com
                   |gnu.org                     |
   Target Milestone|---                         |4.4.6
            Summary|incorrect                   |[4.4/4.5/4.6 Regression]
                   |_mm256_insert_epi{32,64}    |incorrect
                   |implementations             |_mm256_insert_epi{32,64}
                   |                            |implementations
     Ever Confirmed|0                           |1

--- Comment #1 from Uros Bizjak <ubizjak at gmail dot com> 2011-02-21 19:45:17 
UTC ---
A typo, following patch should fix it:

Index: avxintrin.h
===================================================================
--- avxintrin.h    (revision 170367)
+++ avxintrin.h    (working copy)
@@ -737,7 +737,7 @@
 _mm256_insert_epi32 (__m256i __X, int __D, int const __N)
 {
   __m128i __Y = _mm256_extractf128_si256 (__X, __N >> 2);
-  __Y = _mm_insert_epi16 (__Y, __D, __N % 4);
+  __Y = _mm_insert_epi32 (__Y, __D, __N % 4);
   return _mm256_insertf128_si256 (__X, __Y, __N >> 2);
 }

@@ -762,7 +762,7 @@
 _mm256_insert_epi64 (__m256i __X, int __D, int const __N)
 {
   __m128i __Y = _mm256_extractf128_si256 (__X, __N >> 1);
-  __Y = _mm_insert_epi16 (__Y, __D, __N % 2);
+  __Y = _mm_insert_epi64 (__Y, __D, __N % 2);
   return _mm256_insertf128_si256 (__X, __Y, __N >> 1);
 }
 #endif

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