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tcg/optimize: Build and use z_bits and o_bits in fold_eqv

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Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2024-12-10 08:26:56 -06:00
parent d4d441e3a1
commit 33fcebadd0
1 changed files with 12 additions and 2 deletions
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14
tcg/optimize.c
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@ -1093,6 +1093,12 @@ static bool fold_masks_zosa(OptContext *ctx, TCGOp *op, uint64_t z_mask,
return true;
}
static bool fold_masks_zos(OptContext *ctx, TCGOp *op,
uint64_t z_mask, uint64_t o_mask, uint64_t s_mask)
{
return fold_masks_zosa(ctx, op, z_mask, o_mask, s_mask, -1);
}
static bool fold_masks_zs(OptContext *ctx, TCGOp *op,
uint64_t z_mask, uint64_t s_mask)
{
@ -1916,7 +1922,7 @@ static bool fold_dup2(OptContext *ctx, TCGOp *op)
static bool fold_eqv(OptContext *ctx, TCGOp *op)
{
uint64_t s_mask;
uint64_t z_mask, o_mask, s_mask;
TempOptInfo *t1, *t2;
if (fold_const2_commutative(ctx, op) ||
@ -1946,8 +1952,12 @@ static bool fold_eqv(OptContext *ctx, TCGOp *op)
}
t1 = arg_info(op->args[1]);
z_mask = (t1->z_mask | ~t2->o_mask) & (t2->z_mask | ~t1->o_mask);
o_mask = ~(t1->z_mask | t2->z_mask) | (t1->o_mask & t2->o_mask);
s_mask = t1->s_mask & t2->s_mask;
return fold_masks_s(ctx, op, s_mask);
return fold_masks_zos(ctx, op, z_mask, o_mask, s_mask);
}
static bool fold_extract(OptContext *ctx, TCGOp *op)