add a toggle to enable extended const on wamrc (#4412)

Author: kylo5aby

core/iwasm/compilation/aot_emit_aot_file.c

@@ -1960,13 +1960,15 @@ aot_emit_init_expr(uint8 *buf, uint8 *buf_end, uint32 *p_offset,
         case INIT_EXPR_TYPE_I64_ADD:
         case INIT_EXPR_TYPE_I64_SUB:
         case INIT_EXPR_TYPE_I64_MUL:
-            if (!aot_emit_init_expr(buf, buf_end, &offset, comp_ctx,
-                                    expr->u.binary.l_expr)) {
-                return false;
-            }
-            if (!aot_emit_init_expr(buf, buf_end, &offset, comp_ctx,
-                                    expr->u.binary.r_expr)) {
-                return false;
+            if (comp_ctx->enable_extended_const) {
+                if (!aot_emit_init_expr(buf, buf_end, &offset, comp_ctx,
+                                        expr->u.binary.l_expr)) {
+                    return false;
+                }
+                if (!aot_emit_init_expr(buf, buf_end, &offset, comp_ctx,
+                                        expr->u.binary.r_expr)) {
+                    return false;
+                }
             }
             break;
 #endif

core/iwasm/compilation/aot_llvm.c

@@ -2703,6 +2703,9 @@ aot_create_comp_context(const AOTCompData *comp_data, aot_comp_option_t option)
     if (option->enable_shared_heap)
         comp_ctx->enable_shared_heap = true;
 
+    if (option->enable_extended_const)
+        comp_ctx->enable_extended_const = true;
+
     comp_ctx->opt_level = option->opt_level;
     comp_ctx->size_level = option->size_level;
 

core/iwasm/compilation/aot_llvm.h

@@ -457,6 +457,9 @@ typedef struct AOTCompContext {
     /* Enable LLVM PGO (Profile-Guided Optimization) */
     bool enable_llvm_pgo;
 
+    /* Enable extended constant expression */
+    bool enable_extended_const;
+
     /* Treat unknown import function as wasm-c-api import function
        and allow to directly invoke it from AOT/JIT code */
     bool quick_invoke_c_api_import;

core/iwasm/include/aot_comp_option.h

@@ -68,6 +68,7 @@ typedef struct AOTCompOption {
     bool enable_ref_types;
     bool enable_gc;
     bool enable_aux_stack_check;
+    bool enable_extended_const;
     AOTStackFrameType aux_stack_frame_type;
     AOTCallStackFeatures call_stack_features;
     bool enable_perf_profiling;

doc/build_wamr.md

@@ -292,6 +292,10 @@ Currently we only profile the memory consumption of module, module_instance and
 - **WAMR_BUILD_AOT_INTRINSICS**=1/0, enable the AOT intrinsic functions, default to enable if not set. These functions can be called from the AOT code when `--disable-llvm-intrinsics` flag or `--enable-builtin-intrinsics=<intr1,intr2,...>` flag is used by wamrc to generate the AOT file.
 > Note: See [Tuning the XIP intrinsic functions](./xip.md#tuning-the-xip-intrinsic-functions) for more details.
 
+### **Enable extended constant expression**
+- **WAMR_BUILD_EXTENDED_CONST_EXPR**=1/0, default to disable if not set.
+> Note: See [Extended Constant Expressions](https://github.com/WebAssembly/extended-const/blob/main/proposals/extended-const/Overview.md) for more details.
+
 ### **Configurable memory access boundary check**
 - **WAMR_CONFIGURABLE_BOUNDS_CHECKS**=1/0, default to disable if not set
 > Note: If it is enabled, allow to run `iwasm --disable-bounds-checks` to disable the memory access boundary checks for interpreter mode.

tests/wamr-test-suites/spec-test-script/runtest.py

@@ -1160,6 +1160,9 @@ def compile_wasm_to_aot(wasm_tempfile, aot_tempfile, runner, opts, r, output = '
         cmd.append("--enable-gc")
         cmd.append("--enable-tail-call")
 
+    if opts.extended_const:
+        cmd.append("--enable-extended-const")
+
     if output == 'object':
         cmd.append("--format=object")
     elif output == 'ir':

wamr-compiler/CMakeLists.txt

@@ -38,12 +38,6 @@ else()
   add_definitions(-DWASM_ENABLE_SIMD=1)
 endif()
 
-if (WAMR_BUILD_EXTENDED_CONST_EXPR EQUAL 0)
-  add_definitions(-DWASM_ENABLE_EXTENDED_CONST_EXPR=0)
-else()
-  add_definitions(-DWASM_ENABLE_EXTENDED_CONST_EXPR=1)
-endif()
-
 add_definitions(-DWASM_ENABLE_INTERP=1)
 add_definitions(-DWASM_ENABLE_WAMR_COMPILER=1)
 add_definitions(-DWASM_ENABLE_BULK_MEMORY=1)
@@ -59,6 +53,7 @@ add_definitions(-DWASM_ENABLE_PERF_PROFILING=1)
 add_definitions(-DWASM_ENABLE_LOAD_CUSTOM_SECTION=1)
 add_definitions(-DWASM_ENABLE_MODULE_INST_CONTEXT=1)
 add_definitions(-DWASM_ENABLE_MEMORY64=1)
+add_definitions(-DWASM_ENABLE_EXTENDED_CONST_EXPR=1)
 
 add_definitions(-DWASM_ENABLE_GC=1)
 

wamr-compiler/main.c

@@ -418,6 +418,7 @@ main(int argc, char *argv[])
     option.enable_bulk_memory = true;
     option.enable_ref_types = true;
     option.enable_gc = false;
+    option.enable_extended_const = false;
     aot_call_stack_features_init_default(&option.call_stack_features);
 
     /* Process options */
@@ -531,6 +532,9 @@ main(int argc, char *argv[])
         else if (!strcmp(argv[0], "--disable-aux-stack-check")) {
             option.enable_aux_stack_check = false;
         }
+        else if (!strcmp(argv[0], "--enable-extended-const")) {
+            option.enable_extended_const = true;
+        }
         else if (!strcmp(argv[0], "--enable-dump-call-stack")) {
             option.aux_stack_frame_type = AOT_STACK_FRAME_TYPE_STANDARD;
         }