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[PULL 09/11] tcg/optimize: Fold dup2_vec
From: |
Richard Henderson |
Subject: |
[PULL 09/11] tcg/optimize: Fold dup2_vec |
Date: |
Thu, 8 Oct 2020 07:56:57 -0500 |
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>
---
tcg/optimize.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/tcg/optimize.c b/tcg/optimize.c
index 53aa8e5329..220f4601d5 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):
--
2.25.1
- [PULL 00/11] tcg patch queue, Richard Henderson, 2020/10/08
- [PULL 01/11] tcg: Adjust simd_desc size encoding, Richard Henderson, 2020/10/08
- [PULL 02/11] tcg: Drop union from TCGArgConstraint, Richard Henderson, 2020/10/08
- [PULL 03/11] tcg: Move sorted_args into TCGArgConstraint.sort_index, Richard Henderson, 2020/10/08
- [PULL 04/11] tcg: Remove TCG_CT_REG, Richard Henderson, 2020/10/08
- [PULL 05/11] tcg: Move some TCG_CT_* bits to TCGArgConstraint bitfields, Richard Henderson, 2020/10/08
- [PULL 06/11] tcg: Remove TCGOpDef.used, Richard Henderson, 2020/10/08
- [PULL 08/11] tcg: Fix generation of dupi_vec for 32-bit host, Richard Henderson, 2020/10/08
- [PULL 07/11] tcg/i386: Fix dupi for avx2 32-bit hosts, Richard Henderson, 2020/10/08
- [PULL 09/11] tcg/optimize: Fold dup2_vec,
Richard Henderson <=
- [PULL 11/11] accel/tcg: Fix computing of is_write for MIPS, Richard Henderson, 2020/10/08
- [PULL 10/11] tcg: Remove TCG_TARGET_HAS_cmp_vec, Richard Henderson, 2020/10/08
- Re: [PULL 00/11] tcg patch queue, no-reply, 2020/10/08
- Re: [PULL 00/11] tcg patch queue, Peter Maydell, 2020/10/08