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| author | Richard Henderson <richard.henderson@linaro.org> | 2024-12-10 08:39:56 -0600 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2025-06-30 07:42:37 -0600 |
| commit | 787190e3f433022d6fd2983f5e5efdb848439a41 (patch) | |
| tree | c8cea7a76252cde9d2a164e4f18e5573df7c5e5c | |
| parent | cc4033ee47c39ca5668ca0ab9b23046cf029fc21 (diff) | |
| download | qemu-787190e3f433022d6fd2983f5e5efdb848439a41.zip qemu-787190e3f433022d6fd2983f5e5efdb848439a41.tar.gz qemu-787190e3f433022d6fd2983f5e5efdb848439a41.tar.bz2 | |
tcg/optimize: Build and use o_bits in fold_xor
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
| -rw-r--r-- | tcg/optimize.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c index 795f1c9..572d314 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -3039,7 +3039,7 @@ static bool fold_tcg_st_memcopy(OptContext *ctx, TCGOp *op) static bool fold_xor(OptContext *ctx, TCGOp *op) { - uint64_t z_mask, s_mask; + uint64_t z_mask, o_mask, s_mask; TempOptInfo *t1, *t2; if (fold_const2_commutative(ctx, op) || @@ -3051,9 +3051,12 @@ static bool fold_xor(OptContext *ctx, TCGOp *op) t1 = arg_info(op->args[1]); t2 = arg_info(op->args[2]); - z_mask = t1->z_mask | t2->z_mask; + + z_mask = (t1->z_mask | t2->z_mask) & ~(t1->o_mask & t2->o_mask); + o_mask = (t1->o_mask & ~t2->z_mask) | (t2->o_mask & ~t1->z_mask); s_mask = t1->s_mask & t2->s_mask; - return fold_masks_zs(ctx, op, z_mask, s_mask); + + return fold_masks_zos(ctx, op, z_mask, o_mask, s_mask); } /* Propagate constants and copies, fold constant expressions. */ |