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[PATCH v3 18/48] tcg/optimize: Split out fold_brcond
From: |
Richard Henderson |
Subject: |
[PATCH v3 18/48] tcg/optimize: Split out fold_brcond |
Date: |
Thu, 21 Oct 2021 14:05:09 -0700 |
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/optimize.c | 33 +++++++++++++++++++--------------
1 file changed, 19 insertions(+), 14 deletions(-)
diff --git a/tcg/optimize.c b/tcg/optimize.c
index 61a6221ad2..9059e917cf 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -714,6 +714,22 @@ static bool fold_andc(OptContext *ctx, TCGOp *op)
return fold_const2(ctx, op);
}
+static bool fold_brcond(OptContext *ctx, TCGOp *op)
+{
+ TCGCond cond = op->args[2];
+ int i = do_constant_folding_cond(op->opc, op->args[0], op->args[1], cond);
+
+ if (i == 0) {
+ tcg_op_remove(ctx->tcg, op);
+ return true;
+ }
+ if (i > 0) {
+ op->opc = INDEX_op_br;
+ op->args[0] = op->args[3];
+ }
+ return false;
+}
+
static bool fold_brcond2(OptContext *ctx, TCGOp *op)
{
TCGCond cond = op->args[4];
@@ -1626,20 +1642,6 @@ void tcg_optimize(TCGContext *s)
}
break;
- CASE_OP_32_64(brcond):
- i = do_constant_folding_cond(opc, op->args[0],
- op->args[1], op->args[2]);
- if (i == 0) {
- tcg_op_remove(s, op);
- continue;
- } else if (i > 0) {
- memset(&ctx.temps_used, 0, sizeof(ctx.temps_used));
- op->opc = opc = INDEX_op_br;
- op->args[0] = op->args[3];
- break;
- }
- break;
-
CASE_OP_32_64(movcond):
i = do_constant_folding_cond(opc, op->args[1],
op->args[2], op->args[5]);
@@ -1722,6 +1724,9 @@ void tcg_optimize(TCGContext *s)
CASE_OP_32_64_VEC(andc):
done = fold_andc(&ctx, op);
break;
+ CASE_OP_32_64(brcond):
+ done = fold_brcond(&ctx, op);
+ break;
case INDEX_op_brcond2_i32:
done = fold_brcond2(&ctx, op);
break;
--
2.25.1
- Re: [PATCH v3 11/48] tcg/optimize: Return true from tcg_opt_gen_{mov,movi}, (continued)
- [PATCH v3 12/48] tcg/optimize: Split out finish_folding, Richard Henderson, 2021/10/21
- [PATCH v3 06/48] tcg/optimize: Split out init_arguments, Richard Henderson, 2021/10/21
- [PATCH v3 05/48] tcg/optimize: Move prev_mb into OptContext, Richard Henderson, 2021/10/21
- [PATCH v3 02/48] tcg/optimize: Split out OptContext, Richard Henderson, 2021/10/21
- [PATCH v3 14/48] tcg/optimize: Split out fold_mb, fold_qemu_{ld,st}, Richard Henderson, 2021/10/21
- [PATCH v3 18/48] tcg/optimize: Split out fold_brcond,
Richard Henderson <=
- [PATCH v3 04/48] tcg/optimize: Change tcg_opt_gen_{mov, movi} interface, Richard Henderson, 2021/10/21
- [PATCH v3 07/48] tcg/optimize: Split out copy_propagate, Richard Henderson, 2021/10/21
- [PATCH v3 15/48] tcg/optimize: Split out fold_const{1,2}, Richard Henderson, 2021/10/21
- [PATCH v3 13/48] tcg/optimize: Use a boolean to avoid a mass of continues, Richard Henderson, 2021/10/21
- [PATCH v3 22/48] tcg/optimize: Split out fold_movcond, Richard Henderson, 2021/10/21