diff options
Diffstat (limited to 'gcc/config/i386/i386-features.cc')
| -rw-r--r-- | gcc/config/i386/i386-features.cc | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/gcc/config/i386/i386-features.cc b/gcc/config/i386/i386-features.cc index 4d69251..f801a8f 100644 --- a/gcc/config/i386/i386-features.cc +++ b/gcc/config/i386/i386-features.cc @@ -572,6 +572,9 @@ general_scalar_chain::compute_convert_gain () { if (INTVAL (XEXP (src, 1)) >= 32) igain += ix86_cost->add; + /* Gain for extend highpart case. */ + else if (GET_CODE (XEXP (src, 0)) == ASHIFT) + igain += ix86_cost->shift_const - ix86_cost->sse_op; else igain += ix86_cost->shift_const; } @@ -951,7 +954,8 @@ general_scalar_chain::convert_op (rtx *op, rtx_insn *insn) { *op = copy_rtx_if_shared (*op); - if (GET_CODE (*op) == NOT) + if (GET_CODE (*op) == NOT + || GET_CODE (*op) == ASHIFT) { convert_op (&XEXP (*op, 0), insn); PUT_MODE (*op, vmode); @@ -2120,7 +2124,7 @@ general_scalar_to_vector_candidate_p (rtx_insn *insn, enum machine_mode mode) switch (GET_CODE (src)) { case ASHIFTRT: - if (!TARGET_AVX512VL) + if (mode == DImode && !TARGET_AVX512VL) return false; /* FALLTHRU */ @@ -2131,6 +2135,14 @@ general_scalar_to_vector_candidate_p (rtx_insn *insn, enum machine_mode mode) if (!CONST_INT_P (XEXP (src, 1)) || !IN_RANGE (INTVAL (XEXP (src, 1)), 0, GET_MODE_BITSIZE (mode)-1)) return false; + + /* Check for extend highpart case. */ + if (mode != DImode + || GET_CODE (src) != ASHIFTRT + || GET_CODE (XEXP (src, 0)) != ASHIFT) + break; + + src = XEXP (src, 0); break; case SMAX: |