Properly byte-swap fixed packed fields.
diff --git a/benchmarks/compare.py b/benchmarks/compare.py
index 6ce9e76..55ed699 100755
--- a/benchmarks/compare.py
+++ b/benchmarks/compare.py
@@ -85,7 +85,7 @@
Run("cp -f bazel-bin/tests/conformance_upb {}.bin".format(outbase))
-baseline = "master"
+baseline = "main"
bench_cpu = True
fasttable = False
diff --git a/upb/decode.c b/upb/decode.c
index 822694f..abc3ecb 100644
--- a/upb/decode.c
+++ b/upb/decode.c
@@ -449,8 +449,31 @@
arr->len += count;
// Note: if/when the decoder supports multi-buffer input, we will need to
// handle buffer seams here.
- memcpy(mem, ptr, val->size);
- return ptr + val->size;
+ if (_upb_isle()) {
+ memcpy(mem, ptr, val->size);
+ ptr += val->size;
+ } else {
+ const char *end = ptr + val->size;
+ char *dst = mem;
+ while (ptr < end) {
+ if (lg2 == 2) {
+ uint32_t val;
+ memcpy(&val, ptr, sizeof(val));
+ val = _upb_be_swap32(val);
+ memcpy(dst, &val, sizeof(val));
+ } else {
+ UPB_ASSERT(lg2 == 3);
+ uint64_t val;
+ memcpy(&val, ptr, sizeof(val));
+ val = _upb_be_swap64(val);
+ memcpy(dst, &val, sizeof(val));
+ }
+ ptr += 1 << lg2;
+ dst += 1 << lg2;
+ }
+ }
+
+ return ptr;
}
UPB_FORCEINLINE
