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tcg/optimize: Split out fold_extract, fold_sextract 

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 10:44:53 -07:00
parent dcd08996c9
commit b6617c8821
1 changed files with 30 additions and 18 deletions
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48
tcg/optimize.c
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@ -888,6 +888,18 @@ static bool fold_eqv(OptContext *ctx, TCGOp *op)
return fold_const2(ctx, op);
}
static bool fold_extract(OptContext *ctx, TCGOp *op)
{
if (arg_is_const(op->args[1])) {
uint64_t t;
t = arg_info(op->args[1])->val;
t = extract64(t, op->args[2], op->args[3]);
return tcg_opt_gen_movi(ctx, op, op->args[0], t);
}
return false;
}
static bool fold_extract2(OptContext *ctx, TCGOp *op)
{
if (arg_is_const(op->args[1]) && arg_is_const(op->args[2])) {
@ -1126,6 +1138,18 @@ static bool fold_setcond2(OptContext *ctx, TCGOp *op)
return tcg_opt_gen_movi(ctx, op, op->args[0], i);
}
static bool fold_sextract(OptContext *ctx, TCGOp *op)
{
if (arg_is_const(op->args[1])) {
uint64_t t;
t = arg_info(op->args[1])->val;
t = sextract64(t, op->args[2], op->args[3]);
return tcg_opt_gen_movi(ctx, op, op->args[0], t);
}
return false;
}
static bool fold_shift(OptContext *ctx, TCGOp *op)
{
return fold_const2(ctx, op);
@ -1727,24 +1751,6 @@ void tcg_optimize(TCGContext *s)
}
break;
CASE_OP_32_64(extract):
if (arg_is_const(op->args[1])) {
tmp = extract64(arg_info(op->args[1])->val,
op->args[2], op->args[3]);
tcg_opt_gen_movi(&ctx, op, op->args[0], tmp);
continue;
}
break;
CASE_OP_32_64(sextract):
if (arg_is_const(op->args[1])) {
tmp = sextract64(arg_info(op->args[1])->val,
op->args[2], op->args[3]);
tcg_opt_gen_movi(&ctx, op, op->args[0], tmp);
continue;
}
break;
default:
break;
@ -1779,6 +1785,9 @@ void tcg_optimize(TCGContext *s)
CASE_OP_32_64(eqv):
done = fold_eqv(&ctx, op);
break;
CASE_OP_32_64(extract):
done = fold_extract(&ctx, op);
break;
CASE_OP_32_64(extract2):
done = fold_extract2(&ctx, op);
break;
@ -1856,6 +1865,9 @@ void tcg_optimize(TCGContext *s)
case INDEX_op_setcond2_i32:
done = fold_setcond2(&ctx, op);
break;
CASE_OP_32_64(sextract):
done = fold_sextract(&ctx, op);
break;
CASE_OP_32_64_VEC(sub):
done = fold_sub(&ctx, op);
break;