diff options
| author | Samuel Pitoiset <[email protected]> | 2020-01-29 14:38:55 +0100 |
|---|---|---|
| committer | Dylan Baker <[email protected]> | 2020-04-09 14:16:23 -0700 |
| commit | a0e857c7682e134034a7f416120c4deeed6754d7 (patch) | |
| tree | dec11f7ae887344ccfd1ebfd3780b3ecb10a9719 /src/amd | |
| parent | 87f1e7b1d8c413d49c6a8281d63f9466fd1308f6 (diff) | |
ac/nir: split 8-bit SSBO stores on GFX6
Due to possible alignment issues, make sure to split stores of
8-bit vectors.
Signed-off-by: Samuel Pitoiset <[email protected]>
Reviewed-by: Bas Nieuwenhuizen <[email protected]>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4339>
(cherry picked from commit c6bf1597d1e8abf122371118b04a85ee0aa6b3d5)
Diffstat (limited to 'src/amd')
| -rw-r--r-- | src/amd/llvm/ac_nir_to_llvm.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/amd/llvm/ac_nir_to_llvm.c b/src/amd/llvm/ac_nir_to_llvm.c index 577a1b6cd75..6acef5e7fb7 100644 --- a/src/amd/llvm/ac_nir_to_llvm.c +++ b/src/amd/llvm/ac_nir_to_llvm.c @@ -1734,6 +1734,15 @@ static void visit_store_ssbo(struct ac_nir_context *ctx, count = 1; num_bytes = 2; } + + /* Due to alignment issues, split stores of 8-bit vectors. */ + if (ctx->ac.chip_class == GFX6 && + elem_size_bytes == 1 && count > 1) { + writemask |= ((1u << (count - 1)) - 1u) << (start + 1); + count = 1; + num_bytes = 1; + } + data = extract_vector_range(&ctx->ac, base_data, start, count); offset = LLVMBuildAdd(ctx->ac.builder, base_offset, |