diff options
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/i386/sse.md | 19 |
2 files changed, 25 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7e7ebe0..05706ab 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2011-12-02 Jakub Jelinek <jakub@redhat.com> + + PR target/51387 + * config/i386/sse.md (mul<mode>3 with VI1_AVX2 iterator): For + V32QImode use { 0,2,..,14,32,34,..,46,16,18,..,30,48,50,..,62 } + permutation instead of extract even permutation. + 2011-12-02 Nathan Sidwell <nathan@acm.org> * gcov.c (struct arc_info): Add is_throw field. diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md index 8c434b7..7da2f34 100644 --- a/gcc/config/i386/sse.md +++ b/gcc/config/i386/sse.md @@ -5066,7 +5066,24 @@ gen_lowpart (mulmode, t[3])))); /* Extract the even bytes and merge them back together. */ - ix86_expand_vec_extract_even_odd (operands[0], t[5], t[4], 0); + if (<MODE>mode == V16QImode) + ix86_expand_vec_extract_even_odd (operands[0], t[5], t[4], 0); + else + { + /* Since avx2_interleave_{low,high}v32qi used above aren't cross-lane, + this can't be normal even extraction, but one where additionally + the second and third quarter are swapped. That is even one insn + shorter than even extraction. */ + rtvec v = rtvec_alloc (32); + for (i = 0; i < 32; ++i) + RTVEC_ELT (v, i) + = GEN_INT (i * 2 + ((i & 24) == 8 ? 16 : (i & 24) == 16 ? -16 : 0)); + t[0] = operands[0]; + t[1] = t[5]; + t[2] = t[4]; + t[3] = gen_rtx_CONST_VECTOR (<MODE>mode, v); + ix86_expand_vec_perm_const (t); + } set_unique_reg_note (get_last_insn (), REG_EQUAL, gen_rtx_MULT (<MODE>mode, operands[1], operands[2])); |