motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-09-09 08:17:53 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

tcg/optimize: Use fold_masks_zs in fold_xor

Browse source 
Avoid the use of the OptContext slots.  Find TempOptInfo once.
Remove fold_masks as the function becomes unused.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2024-12-08 21:39:01 -06:00
parent 0fb5b757c3
commit c890fd7179
1 changed files with 8 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

18
tcg/optimize.c
View file

@ -1077,11 +1077,6 @@ static bool fold_masks_s(OptContext *ctx, TCGOp *op, uint64_t s_mask)
return fold_masks_zs(ctx, op, -1, s_mask); return fold_masks_zs(ctx, op, -1, s_mask);
} }
static bool fold_masks(OptContext *ctx, TCGOp *op)
{
return fold_masks_zs(ctx, op, ctx->z_mask, ctx->s_mask);
}
/* /*
* An "affected" mask bit is 0 if and only if the result is identical * An "affected" mask bit is 0 if and only if the result is identical
* to the first input. Thus if the entire mask is 0, the operation * to the first input. Thus if the entire mask is 0, the operation
@ -2769,6 +2764,9 @@ static bool fold_tcg_st_memcopy(OptContext *ctx, TCGOp *op)
static bool fold_xor(OptContext *ctx, TCGOp *op) static bool fold_xor(OptContext *ctx, TCGOp *op)
{ {
uint64_t z_mask, s_mask;
TempOptInfo *t1, *t2;
if (fold_const2_commutative(ctx, op) || if (fold_const2_commutative(ctx, op) ||
fold_xx_to_i(ctx, op, 0) || fold_xx_to_i(ctx, op, 0) ||
fold_xi_to_x(ctx, op, 0) || fold_xi_to_x(ctx, op, 0) ||
@ -2776,11 +2774,11 @@ static bool fold_xor(OptContext *ctx, TCGOp *op)
return true; return true;
} }
ctx->z_mask = arg_info(op->args[1])->z_mask t1 = arg_info(op->args[1]);
| arg_info(op->args[2])->z_mask; t2 = arg_info(op->args[2]);
ctx->s_mask = arg_info(op->args[1])->s_mask z_mask = t1->z_mask | t2->z_mask;
& arg_info(op->args[2])->s_mask; s_mask = t1->s_mask & t2->s_mask;
return fold_masks(ctx, op); return fold_masks_zs(ctx, op, z_mask, s_mask);
} }
static bool fold_bitsel_vec(OptContext *ctx, TCGOp *op) static bool fold_bitsel_vec(OptContext *ctx, TCGOp *op)