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| author | Uros Bizjak <ubizjak@gmail.com> | 2019-08-29 21:47:19 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2019-08-29 21:47:19 +0200 |
| commit | 2a3daf5b6101ff30f4bae3a83cf49e8f1e3d082b (patch) | |
| tree | c7427e373daa9fded7f2e6858761e2bb0222c579 | |
| parent | d1041899c2d24d0e001f8a48035881c7d4553aa2 (diff) | |
| download | gcc-2a3daf5b6101ff30f4bae3a83cf49e8f1e3d082b.zip gcc-2a3daf5b6101ff30f4bae3a83cf49e8f1e3d082b.tar.gz gcc-2a3daf5b6101ff30f4bae3a83cf49e8f1e3d082b.tar.bz2 | |
* config/i386/i386-features.c
(general_scalar_chain::compute_convert_gain):
Correct cost for double-word shifts.
(general_scalar_to_vector_candidate_p): Reject count operands
greater or equal to mode bitsize.
From-SVN: r275055
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/i386/i386-features.c | 15 |
2 files changed, 19 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f73e8be..e096497 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,13 @@ 2019-08-29 Uroš Bizjak <ubizjak@gmail.com> + * config/i386/i386-features.c + (general_scalar_chain::compute_convert_gain): + Correct cost for double-word shifts. + (general_scalar_to_vector_candidate_p): Reject count operands + greater or equal to mode bitsize. + +2019-08-29 Uroš Bizjak <ubizjak@gmail.com> + * config/i386/i386.c (inline_secondary_memory_needed): Return true for moves between SSE and non-general registers and between mask and non-general registers. diff --git a/gcc/config/i386/i386-features.c b/gcc/config/i386/i386-features.c index 03f33f8..454eeae 100644 --- a/gcc/config/i386/i386-features.c +++ b/gcc/config/i386/i386-features.c @@ -549,11 +549,18 @@ general_scalar_chain::compute_convert_gain () || GET_CODE (src) == ASHIFTRT || GET_CODE (src) == LSHIFTRT) { + if (m == 2) + { + if (INTVAL (XEXP (src, 1)) >= 32) + igain += ix86_cost->add; + else + igain += ix86_cost->shift_const; + } + + igain += ix86_cost->shift_const - ix86_cost->sse_op; + if (CONST_INT_P (XEXP (src, 0))) igain -= vector_const_cost (XEXP (src, 0)); - igain += m * ix86_cost->shift_const - ix86_cost->sse_op; - if (INTVAL (XEXP (src, 1)) >= 32) - igain -= COSTS_N_INSNS (1); } else if (GET_CODE (src) == PLUS || GET_CODE (src) == MINUS @@ -1359,7 +1366,7 @@ general_scalar_to_vector_candidate_p (rtx_insn *insn, enum machine_mode mode) case ASHIFT: case LSHIFTRT: if (!CONST_INT_P (XEXP (src, 1)) - || !IN_RANGE (INTVAL (XEXP (src, 1)), 0, 63)) + || !IN_RANGE (INTVAL (XEXP (src, 1)), 0, GET_MODE_BITSIZE (mode)-1)) return false; break; |