| Message ID | 20241210152401.1823648-7-richard.henderson@linaro.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | tcg: Remove in-flight mask data from OptContext | expand |
On 12/10/24 07:23, Richard Henderson wrote: > Avoid the use of the OptContext slots. > > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > --- > tcg/optimize.c | 12 ++++++------ > 1 file changed, 6 insertions(+), 6 deletions(-) > > diff --git a/tcg/optimize.c b/tcg/optimize.c > index 135b14974f..000ac0f810 100644 > --- a/tcg/optimize.c > +++ b/tcg/optimize.c > @@ -1306,7 +1306,7 @@ static bool fold_add2(OptContext *ctx, TCGOp *op) > > static bool fold_and(OptContext *ctx, TCGOp *op) > { > - uint64_t z1, z2; > + uint64_t z1, z2, z_mask, s_mask, a_mask = -1; > > if (fold_const2_commutative(ctx, op) || > fold_xi_to_i(ctx, op, 0) || > @@ -1317,24 +1317,24 @@ static bool fold_and(OptContext *ctx, TCGOp *op) > > z1 = arg_info(op->args[1])->z_mask; > z2 = arg_info(op->args[2])->z_mask; > - ctx->z_mask = z1 & z2; > + z_mask = z1 & z2; > > /* > * Sign repetitions are perforce all identical, whether they are 1 or 0. > * Bitwise operations preserve the relative quantity of the repetitions. > */ > - ctx->s_mask = arg_info(op->args[1])->s_mask > - & arg_info(op->args[2])->s_mask; > + s_mask = arg_info(op->args[1])->s_mask > + & arg_info(op->args[2])->s_mask; > > /* > * Known-zeros does not imply known-ones. Therefore unless > * arg2 is constant, we can't infer affected bits from it. > */ > if (arg_is_const(op->args[2])) { > - ctx->a_mask = z1 & ~z2; > + a_mask = z1 & ~z2; > } > > - return fold_masks(ctx, op); > + return fold_masks_zsa(ctx, op, z_mask, s_mask, a_mask); > } > > static bool fold_andc(OptContext *ctx, TCGOp *op) Call me young and naive, but having a masks struct, with a, s, z fields would be more readable IMHO, and less error prone between the "local" and the "context" values. Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
diff --git a/tcg/optimize.c b/tcg/optimize.c index 135b14974f..000ac0f810 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -1306,7 +1306,7 @@ static bool fold_add2(OptContext *ctx, TCGOp *op) static bool fold_and(OptContext *ctx, TCGOp *op) { - uint64_t z1, z2; + uint64_t z1, z2, z_mask, s_mask, a_mask = -1; if (fold_const2_commutative(ctx, op) || fold_xi_to_i(ctx, op, 0) || @@ -1317,24 +1317,24 @@ static bool fold_and(OptContext *ctx, TCGOp *op) z1 = arg_info(op->args[1])->z_mask; z2 = arg_info(op->args[2])->z_mask; - ctx->z_mask = z1 & z2; + z_mask = z1 & z2; /* * Sign repetitions are perforce all identical, whether they are 1 or 0. * Bitwise operations preserve the relative quantity of the repetitions. */ - ctx->s_mask = arg_info(op->args[1])->s_mask - & arg_info(op->args[2])->s_mask; + s_mask = arg_info(op->args[1])->s_mask + & arg_info(op->args[2])->s_mask; /* * Known-zeros does not imply known-ones. Therefore unless * arg2 is constant, we can't infer affected bits from it. */ if (arg_is_const(op->args[2])) { - ctx->a_mask = z1 & ~z2; + a_mask = z1 & ~z2; } - return fold_masks(ctx, op); + return fold_masks_zsa(ctx, op, z_mask, s_mask, a_mask); } static bool fold_andc(OptContext *ctx, TCGOp *op)
Avoid the use of the OptContext slots. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- tcg/optimize.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)