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[PATCH v2 18/48] tcg/optimize: Split out fold_brcond
From: |
Richard Henderson |
Subject: |
[PATCH v2 18/48] tcg/optimize: Split out fold_brcond |
Date: |
Thu, 7 Oct 2021 12:54:26 -0700 |
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 266787957f..786d46ed66 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];
@@ -1628,20 +1644,6 @@ 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]);
@@ -1724,6 +1726,9 @@ 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 v2 04/48] tcg/optimize: Change tcg_opt_gen_{mov, movi} interface, (continued)
- [PATCH v2 10/48] tcg/optimize: Change fail return for do_constant_folding_cond*, Richard Henderson, 2021/10/07
- [PATCH v2 07/48] tcg/optimize: Split out copy_propagate, Richard Henderson, 2021/10/07
- [PATCH v2 14/48] tcg/optimize: Split out fold_mb, fold_qemu_{ld,st}, Richard Henderson, 2021/10/07
- [PATCH v2 16/48] tcg/optimize: Split out fold_setcond2, Richard Henderson, 2021/10/07
- [PATCH v2 18/48] tcg/optimize: Split out fold_brcond,
Richard Henderson <=
- [PATCH v2 24/48] tcg/optimize: Split out fold_extract, fold_sextract, Richard Henderson, 2021/10/07
- [PATCH v2 32/48] tcg/optimize: Split out fold_xi_to_i, Richard Henderson, 2021/10/07
- [PATCH v2 30/48] tcg/optimize: Split out fold_xx_to_i, Richard Henderson, 2021/10/07
- [PATCH v2 28/48] tcg/optimize: Split out fold_dup, fold_dup2, Richard Henderson, 2021/10/07
- [PATCH v2 35/48] tcg/optimize: Split out fold_sub_to_neg, Richard Henderson, 2021/10/07
- [PATCH v2 06/48] tcg/optimize: Split out init_arguments, Richard Henderson, 2021/10/07
- [PATCH v2 22/48] tcg/optimize: Split out fold_movcond, Richard Henderson, 2021/10/07