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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Subject: [PULL 28/56] tcg/optimize: Split out fold_extract2
Date: Wed, 27 Oct 2021 19:41:03 -0700
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Cc: Luis Pires <luis.pires@eldorado.org.br>,
=?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <f4bug@amsat.org>
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Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daud=C3=A9 <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/optimize.c | 39 ++++++++++++++++++++++-----------------
1 file changed, 22 insertions(+), 17 deletions(-)
diff --git a/tcg/optimize.c b/tcg/optimize.c
index 110b3d1cc2..faedbdbfb8 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -888,6 +888,25 @@ static bool fold_eqv(OptContext *ctx, TCGOp *op)
return fold_const2(ctx, op);
}
=20
+static bool fold_extract2(OptContext *ctx, TCGOp *op)
+{
+ if (arg_is_const(op->args[1]) && arg_is_const(op->args[2])) {
+ uint64_t v1 =3D arg_info(op->args[1])->val;
+ uint64_t v2 =3D arg_info(op->args[2])->val;
+ int shr =3D op->args[3];
+
+ if (op->opc =3D=3D INDEX_op_extract2_i64) {
+ v1 >>=3D shr;
+ v2 <<=3D 64 - shr;
+ } else {
+ v1 =3D (uint32_t)v1 >> shr;
+ v2 =3D (int32_t)v2 << (32 - shr);
+ }
+ return tcg_opt_gen_movi(ctx, op, op->args[0], v1 | v2);
+ }
+ return false;
+}
+
static bool fold_exts(OptContext *ctx, TCGOp *op)
{
return fold_const1(ctx, op);
@@ -1726,23 +1745,6 @@ void tcg_optimize(TCGContext *s)
}
break;
=20
- CASE_OP_32_64(extract2):
- if (arg_is_const(op->args[1]) && arg_is_const(op->args[2])) {
- uint64_t v1 =3D arg_info(op->args[1])->val;
- uint64_t v2 =3D arg_info(op->args[2])->val;
- int shr =3D op->args[3];
-
- if (opc =3D=3D INDEX_op_extract2_i64) {
- tmp =3D (v1 >> shr) | (v2 << (64 - shr));
- } else {
- tmp =3D (int32_t)(((uint32_t)v1 >> shr) |
- ((uint32_t)v2 << (32 - shr)));
- }
- tcg_opt_gen_movi(&ctx, op, op->args[0], tmp);
- continue;
- }
- break;
-
default:
break;
=20
@@ -1777,6 +1779,9 @@ void tcg_optimize(TCGContext *s)
CASE_OP_32_64(eqv):
done =3D fold_eqv(&ctx, op);
break;
+ CASE_OP_32_64(extract2):
+ done =3D fold_extract2(&ctx, op);
+ break;
CASE_OP_32_64(ext8s):
CASE_OP_32_64(ext16s):
case INDEX_op_ext32s_i64:
--=20
2.25.1