ggml-webgpu: Fix GGML_MEM_ALIGN to 8 for emscripten. (#18628)

* Fix GGML_MEM_ALIGN to 8 for emscripten. * Add a comment explaining the need for GGML_MEM_ALIGN == 8 in 64-bit wasm with emscripten
2026-01-09 01:36:42 +09:00
parent 15bff84bf5
commit 480160d472
1 changed files with 5 additions and 0 deletions
@@ -234,6 +234,11 @@

 #if UINTPTR_MAX == 0xFFFFFFFF
    #define GGML_MEM_ALIGN 4
+#elif defined(__EMSCRIPTEN__)
+// emscripten uses max_align_t == 8, so we need GGML_MEM_ALIGN == 8 for 64-bit wasm.
+// (for 32-bit wasm, the first conditional is true and GGML_MEM_ALIGN stays 4.)
+// ref: https://github.com/ggml-org/llama.cpp/pull/18628
+    #define GGML_MEM_ALIGN 8
 #else
    #define GGML_MEM_ALIGN 16
 #endif