[Bug target/44534] _builtin_ia32_vextractf128_si256(X,N) acts as if N was always set to 1.

[hjl at gcc dot gnu dot org]

------- Comment #4 from hjl at gcc dot gnu dot org  2010-06-14 17:46 -------
Subject: Bug 44534

Author: hjl
Date: Mon Jun 14 17:46:12 2010
New Revision: 160757

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=160757
Log:
Replace 0x1 with 0x0 in AVX vec_extract_lo_* patterns.

gcc/

2010-06-14  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2010-06-14  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/44534
        * config/i386/sse.md (vec_extract_lo_<mode>): Replace 0x1 with
        0x0.
        (vec_extract_lo_v16hi): Likewise.
        (vec_extract_lo_v32qi): Likewise.

gcc/testsuite/

2010-06-14  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline
        2010-06-14  H.J. Lu  <hongjiu.lu@intel.com>

        PR target/44534
        * gcc.target/i386/avx-vextractf128-256-3.c: New.
        * gcc.target/i386/avx-vextractf128-256-4.c: Likewise.

Added:
   
branches/gcc-4_5-branch/gcc/testsuite/gcc.target/i386/avx-vextractf128-256-3.c
   
branches/gcc-4_5-branch/gcc/testsuite/gcc.target/i386/avx-vextractf128-256-4.c
Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/config/i386/sse.md
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44534