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| author | Richard Henderson <richard.henderson@linaro.org> | 2020-09-05 17:03:35 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2020-10-08 05:57:32 -0500 |
| commit | 1dc4fe70128db05237a00eda6eb15e2b44deb31f (patch) | |
| tree | 93e72e75a1f2a9da124e6216669fb2ceba4d7e1a /tcg | |
| parent | a5b30d950c42b14bc9da24d1e68add6538d23336 (diff) | |
| download | qemu-1dc4fe70128db05237a00eda6eb15e2b44deb31f.zip qemu-1dc4fe70128db05237a00eda6eb15e2b44deb31f.tar.gz qemu-1dc4fe70128db05237a00eda6eb15e2b44deb31f.tar.bz2 | |
tcg/optimize: Fold dup2_vec
When the two arguments are identical, this can be reduced to
dup_vec or to mov_vec from a tcg_constant_vec.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/optimize.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c index 53aa8e5..220f460 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1109,6 +1109,21 @@ void tcg_optimize(TCGContext *s) } goto do_default; + case INDEX_op_dup2_vec: + assert(TCG_TARGET_REG_BITS == 32); + if (arg_is_const(op->args[1]) && arg_is_const(op->args[2])) { + tmp = arg_info(op->args[1])->val; + if (tmp == arg_info(op->args[2])->val) { + tcg_opt_gen_movi(s, op, op->args[0], tmp); + break; + } + } else if (args_are_copies(op->args[1], op->args[2])) { + op->opc = INDEX_op_dup_vec; + TCGOP_VECE(op) = MO_32; + nb_iargs = 1; + } + goto do_default; + CASE_OP_32_64(not): CASE_OP_32_64(neg): CASE_OP_32_64(ext8s): |