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authorRichard Henderson <richard.henderson@linaro.org>2020-09-05 17:03:35 -0700
committerRichard Henderson <richard.henderson@linaro.org>2020-10-08 05:57:32 -0500
commit1dc4fe70128db05237a00eda6eb15e2b44deb31f (patch)
tree93e72e75a1f2a9da124e6216669fb2ceba4d7e1a /tcg
parenta5b30d950c42b14bc9da24d1e68add6538d23336 (diff)
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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.c15
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):