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[PATCH v2 27/48] tcg/optimize: Split out fold_bswap
From: |
Richard Henderson |
Subject: |
[PATCH v2 27/48] tcg/optimize: Split out fold_bswap |
Date: |
Thu, 7 Oct 2021 12:54:35 -0700 |
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/optimize.c | 27 ++++++++++++++++-----------
1 file changed, 16 insertions(+), 11 deletions(-)
diff --git a/tcg/optimize.c b/tcg/optimize.c
index d2e5727662..7a7c3e25c5 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -843,6 +843,17 @@ static bool fold_brcond2(OptContext *ctx, TCGOp *op)
return true;
}
+static bool fold_bswap(OptContext *ctx, TCGOp *op)
+{
+ if (arg_is_const(op->args[1])) {
+ uint64_t t = arg_info(op->args[1])->val;
+
+ t = do_constant_folding(op->opc, t, op->args[2]);
+ return tcg_opt_gen_movi(ctx, op, op->args[0], t);
+ }
+ return false;
+}
+
static bool fold_call(OptContext *ctx, TCGOp *op)
{
TCGContext *s = ctx->tcg;
@@ -1729,17 +1740,6 @@ void tcg_optimize(TCGContext *s)
}
break;
- CASE_OP_32_64(bswap16):
- CASE_OP_32_64(bswap32):
- case INDEX_op_bswap64_i64:
- if (arg_is_const(op->args[1])) {
- tmp = do_constant_folding(opc, arg_info(op->args[1])->val,
- op->args[2]);
- tcg_opt_gen_movi(&ctx, op, op->args[0], tmp);
- continue;
- }
- break;
-
default:
break;
@@ -1764,6 +1764,11 @@ void tcg_optimize(TCGContext *s)
case INDEX_op_brcond2_i32:
done = fold_brcond2(&ctx, op);
break;
+ CASE_OP_32_64(bswap16):
+ CASE_OP_32_64(bswap32):
+ case INDEX_op_bswap64_i64:
+ done = fold_bswap(&ctx, op);
+ break;
CASE_OP_32_64(clz):
CASE_OP_32_64(ctz):
done = fold_count_zeros(&ctx, op);
--
2.25.1
- [PATCH v2 02/48] tcg/optimize: Split out OptContext, (continued)
- [PATCH v2 02/48] tcg/optimize: Split out OptContext, Richard Henderson, 2021/10/07
- [PATCH v2 15/48] tcg/optimize: Split out fold_const{1,2}, Richard Henderson, 2021/10/07
- [PATCH v2 17/48] tcg/optimize: Split out fold_brcond2, Richard Henderson, 2021/10/07
- [PATCH v2 26/48] tcg/optimize: Split out fold_count_zeros, Richard Henderson, 2021/10/07
- [PATCH v2 27/48] tcg/optimize: Split out fold_bswap,
Richard Henderson <=
- [PATCH v2 34/48] tcg/optimize: Split out fold_to_not, Richard Henderson, 2021/10/07
- [PATCH v2 03/48] tcg/optimize: Remove do_default label, Richard Henderson, 2021/10/07
- [PATCH v2 05/48] tcg/optimize: Move prev_mb into OptContext, Richard Henderson, 2021/10/07
- [PATCH v2 09/48] tcg/optimize: Drop nb_oargs, nb_iargs locals, Richard Henderson, 2021/10/07