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tcg/optimize: Split out fold_mulu2_i32

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Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-08-24 10:24:12 -07:00
parent c63ff55cc5
commit 6b8ac0d149
1 changed files with 21 additions and 16 deletions
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37
tcg/optimize.c
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@ -899,6 +899,24 @@ static bool fold_mul_highpart(OptContext *ctx, TCGOp *op)
return fold_const2(ctx, op);
}
static bool fold_mulu2_i32(OptContext *ctx, TCGOp *op)
{
if (arg_is_const(op->args[2]) && arg_is_const(op->args[3])) {
uint32_t a = arg_info(op->args[2])->val;
uint32_t b = arg_info(op->args[3])->val;
uint64_t r = (uint64_t)a * b;
TCGArg rl, rh;
TCGOp *op2 = tcg_op_insert_before(ctx->tcg, op, INDEX_op_mov_i32);
rl = op->args[0];
rh = op->args[1];
tcg_opt_gen_movi(ctx, op, rl, (int32_t)r);
tcg_opt_gen_movi(ctx, op2, rh, (int32_t)(r >> 32));
return true;
}
return false;
}
static bool fold_nand(OptContext *ctx, TCGOp *op)
{
return fold_const2(ctx, op);
@ -1710,22 +1728,6 @@ void tcg_optimize(TCGContext *s)
}
break;
case INDEX_op_mulu2_i32:
if (arg_is_const(op->args[2]) && arg_is_const(op->args[3])) {
uint32_t a = arg_info(op->args[2])->val;
uint32_t b = arg_info(op->args[3])->val;
uint64_t r = (uint64_t)a * b;
TCGArg rl, rh;
TCGOp *op2 = tcg_op_insert_before(s, op, INDEX_op_mov_i32);
rl = op->args[0];
rh = op->args[1];
tcg_opt_gen_movi(&ctx, op, rl, (int32_t)r);
tcg_opt_gen_movi(&ctx, op2, rh, (int32_t)(r >> 32));
continue;
}
break;
default:
break;
@ -1781,6 +1783,9 @@ void tcg_optimize(TCGContext *s)
CASE_OP_32_64(muluh):
done = fold_mul_highpart(&ctx, op);
break;
case INDEX_op_mulu2_i32:
done = fold_mulu2_i32(&ctx, op);
break;
CASE_OP_32_64(nand):
done = fold_nand(&ctx, op);
break;