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author | Richard Henderson | 2019-03-16 22:44:56 +0100 |
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committer | Richard Henderson | 2019-05-13 23:44:03 +0200 |
commit | ce27c5d1a38e93da38653af71fb468c5eded4c7b (patch) | |
tree | e537735d5dff4fc8edcb3e5e6eda4f5d47759aa4 /tcg | |
parent | tcg: Do not recreate INDEX_op_neg_vec unless supported (diff) | |
download | qemu-ce27c5d1a38e93da38653af71fb468c5eded4c7b.tar.gz qemu-ce27c5d1a38e93da38653af71fb468c5eded4c7b.tar.xz qemu-ce27c5d1a38e93da38653af71fb468c5eded4c7b.zip |
tcg: Allow add_vec, sub_vec, neg_vec, not_vec to be expanded
PowerPC Altivec does not support add and subtract of 64-bit elements.
Prepare for that configuration by not assuming the operation is
universally supported.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg')
-rw-r--r-- | tcg/tcg-op-vec.c | 49 |
1 files changed, 33 insertions, 16 deletions
diff --git a/tcg/tcg-op-vec.c b/tcg/tcg-op-vec.c index 27f65600c3..cfb18682b1 100644 --- a/tcg/tcg-op-vec.c +++ b/tcg/tcg-op-vec.c @@ -226,16 +226,6 @@ void tcg_gen_stl_vec(TCGv_vec r, TCGv_ptr b, TCGArg o, TCGType low_type) vec_gen_3(INDEX_op_st_vec, low_type, 0, ri, bi, o); } -void tcg_gen_add_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b) -{ - vec_gen_op3(INDEX_op_add_vec, vece, r, a, b); -} - -void tcg_gen_sub_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b) -{ - vec_gen_op3(INDEX_op_sub_vec, vece, r, a, b); -} - void tcg_gen_and_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b) { vec_gen_op3(INDEX_op_and_vec, 0, r, a, b); @@ -296,11 +286,30 @@ void tcg_gen_eqv_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b) tcg_gen_not_vec(0, r, r); } -void tcg_gen_not_vec(unsigned vece, TCGv_vec r, TCGv_vec a) +static bool do_op2(unsigned vece, TCGv_vec r, TCGv_vec a, TCGOpcode opc) { - if (TCG_TARGET_HAS_not_vec) { - vec_gen_op2(INDEX_op_not_vec, 0, r, a); + TCGTemp *rt = tcgv_vec_temp(r); + TCGTemp *at = tcgv_vec_temp(a); + TCGArg ri = temp_arg(rt); + TCGArg ai = temp_arg(at); + TCGType type = rt->base_type; + int can; + + tcg_debug_assert(at->base_type >= type); + can = tcg_can_emit_vec_op(opc, type, vece); + if (can > 0) { + vec_gen_2(opc, type, vece, ri, ai); + } else if (can < 0) { + tcg_expand_vec_op(opc, type, vece, ri, ai); } else { + return false; + } + return true; +} + +void tcg_gen_not_vec(unsigned vece, TCGv_vec r, TCGv_vec a) +{ + if (!TCG_TARGET_HAS_not_vec || !do_op2(vece, r, a, INDEX_op_not_vec)) { TCGv_vec t = tcg_const_ones_vec_matching(r); tcg_gen_xor_vec(0, r, a, t); tcg_temp_free_vec(t); @@ -309,9 +318,7 @@ void tcg_gen_not_vec(unsigned vece, TCGv_vec r, TCGv_vec a) void tcg_gen_neg_vec(unsigned vece, TCGv_vec r, TCGv_vec a) { - if (TCG_TARGET_HAS_neg_vec) { - vec_gen_op2(INDEX_op_neg_vec, vece, r, a); - } else { + if (!TCG_TARGET_HAS_neg_vec || !do_op2(vece, r, a, INDEX_op_neg_vec)) { TCGv_vec t = tcg_const_zeros_vec_matching(r); tcg_gen_sub_vec(vece, r, t, a); tcg_temp_free_vec(t); @@ -409,6 +416,16 @@ static void do_op3(unsigned vece, TCGv_vec r, TCGv_vec a, } } +void tcg_gen_add_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b) +{ + do_op3(vece, r, a, b, INDEX_op_add_vec); +} + +void tcg_gen_sub_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b) +{ + do_op3(vece, r, a, b, INDEX_op_sub_vec); +} + void tcg_gen_mul_vec(unsigned vece, TCGv_vec r, TCGv_vec a, TCGv_vec b) { do_op3(vece, r, a, b, INDEX_op_mul_vec); |