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Commit 41ee4e75 by Jan Hubicka Committed by Jan Hubicka
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* x86-tune.def: Enable inter_unit_moves_to_vec for generic. 

From-SVN: r267484
parent 80c2bad6
Showing with 10 additions and 2 deletions
gcc/ChangeLog
2018-12-30 Jan Hubicka <hubicka@ucw.cz>
* x86-tune.def: Enable inter_unit_moves_to_vec for generic.
2018-12-30 Martin Sebor <msebor@redhat.com>
Jeff Law <law@redhat.com>
gcc/config/i386/x86-tune.def
......@@ -379,9 +379,13 @@ DEF_TUNE (X86_TUNE_SSE_LOAD0_BY_PXOR, "sse_load0_by_pxor",
/* X86_TUNE_INTER_UNIT_MOVES_TO_VEC: Enable moves in from integer
to SSE registers. If disabled, the moves will be done by storing
the value to memory and reloading. */
the value to memory and reloading.
Enable this flag for generic - the only relevant architecture preferring
no inter-unit moves is Buldozer. While this makes small regression on SPECfp
scores (sub 0.3%), disabling inter-unit moves penalizes noticeably hand
written vectorized code which use i.e. _mm_set_epi16. */
DEF_TUNE (X86_TUNE_INTER_UNIT_MOVES_TO_VEC, "inter_unit_moves_to_vec",
~(m_ATHLON_K8 | m_AMDFAM10 | m_BDVER | m_BTVER | m_GENERIC))
~(m_ATHLON_K8 | m_AMDFAM10 | m_BDVER | m_BTVER))
/* X86_TUNE_INTER_UNIT_MOVES_TO_VEC: Enable moves in from SSE
to integer registers. If disabled, the moves will be done by storing
......
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