AOT call stack optimizations (#3773)

- Implement TINY / STANDARD frame modes - tiny mode is only able to keep track on the IP
  and func idx, STANDARD mode provides more capabilities (parameters, stack pointer etc.).
- Implement FRAME_PER_FUNCTION / FRAME_PER_CALL modes - frame per function adds
  code at the beginning and at the end of each function for allocating / deallocating stack frame,
  whereas in per-call mode the frame is allocated before each call. The exception is call to
  the imported function, where frame-per-function mode also allocates the stack before the
  `call` instruction (as it can't instrument the imported function).

At the moment TINY + FRAME_PER_FUNCTION is automatically enabled in case GC and perf
profiling are disabled and `values` call stack feature is not requested. In all the other cases
STANDARD + FRAME_PER_CALL is used.

STANDARD + FRAME_PER_FUNCTION and TINY + FRAME_PER_CALL are currently not
implemented but possible, and might be enabled in the future.

ps. https://github.com/bytecodealliance/wasm-micro-runtime/issues/3758
This commit is contained in:
Marcin Kolny
2024-09-10 02:05:23 +01:00
committed by GitHub
parent 0599351262
commit cbc2078898
17 changed files with 590 additions and 85 deletions

View File

@ -5406,8 +5406,8 @@ init_llvm_jit_functions_stage1(WASMModule *module, char *error_buf,
option.enable_aux_stack_check = true;
#if WASM_ENABLE_PERF_PROFILING != 0 || WASM_ENABLE_DUMP_CALL_STACK != 0 \
|| WASM_ENABLE_AOT_STACK_FRAME != 0
option.enable_aux_stack_frame = true;
memset(&option.call_stack_features, 1, sizeof(AOTCallStackFeatures));
option.aux_stack_frame_type = AOT_STACK_FRAME_TYPE_STANDARD;
aot_call_stack_features_init_default(&option.call_stack_features);
#endif
#if WASM_ENABLE_PERF_PROFILING != 0
option.enable_perf_profiling = true;