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-rw-r--r--src/shell-interface.h1
-rw-r--r--src/support/name.h58
-rw-r--r--src/wasm-emscripten.cpp25
-rw-r--r--src/wasm-linker.h1
-rw-r--r--src/wasm.h27
-rw-r--r--test/dot_s/asm_const.wast6
-rw-r--r--test/dot_s/memops.wast6
7 files changed, 89 insertions, 35 deletions
diff --git a/src/shell-interface.h b/src/shell-interface.h
index ee7ba4d9c..26e0c1742 100644
--- a/src/shell-interface.h
+++ b/src/shell-interface.h
@@ -23,6 +23,7 @@
#include "shared-constants.h"
#include "asmjs/shared-constants.h"
+#include "support/name.h"
#include "wasm.h"
#include "wasm-interpreter.h"
diff --git a/src/support/name.h b/src/support/name.h
new file mode 100644
index 000000000..9853f5462
--- /dev/null
+++ b/src/support/name.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2017 WebAssembly Community Group participants
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef wasm_support_string_h
+#define wasm_support_string_h
+
+#include <cstring>
+
+#include "emscripten-optimizer/istring.h"
+
+namespace wasm {
+
+// We use a Name for all of the identifiers. These are IStrings, so they are
+// all interned - comparisons etc are just pointer comparisons, so there is no
+// perf loss. Having names everywhere makes using the AST much nicer (for
+// example, block names are strings and not offsets, which makes composition
+// - adding blocks, removing blocks - easy). One exception is local variables,
+// where we do use indices, as they are a large proportion of the AST,
+// perf matters a lot there, and compositionality is not a problem.
+// TODO: as an optimization, IString values < some threshold could be considered
+// numerical indices directly.
+
+struct Name : public cashew::IString {
+ Name() : cashew::IString() {}
+ Name(const char* str) : cashew::IString(str, false) {}
+ Name(cashew::IString str) : cashew::IString(str) {}
+ Name(const std::string& str) : cashew::IString(str.c_str(), false) {}
+
+ friend std::ostream& operator<<(std::ostream& o, Name name) {
+ assert(name.str);
+ return o << '$' << name.str; // reference interpreter requires we prefix all names
+ }
+
+ static Name fromInt(size_t i) {
+ return cashew::IString(std::to_string(i).c_str(), false);
+ }
+
+ bool hasSubstring(cashew::IString substring) {
+ return strstr(c_str(), substring.c_str()) != nullptr;
+ }
+};
+
+} // namespace wasm
+
+#endif // wasm_support_string_h
diff --git a/src/wasm-emscripten.cpp b/src/wasm-emscripten.cpp
index e8f0194d3..99115fae9 100644
--- a/src/wasm-emscripten.cpp
+++ b/src/wasm-emscripten.cpp
@@ -57,8 +57,20 @@ static bool hasI64ResultOrParam(FunctionType* ft) {
return false;
}
+void removeImportsWithSubstring(Module& module, Name name) {
+ std::vector<Name> toRemove;
+ for (auto& import : module.imports) {
+ if (import->name.hasSubstring(name)) {
+ toRemove.push_back(import->name);
+ }
+ }
+ for (auto importName : toRemove) {
+ module.removeImport(importName);
+ }
+}
+
std::vector<Function*> makeDynCallThunks(Module& wasm, std::vector<Name> const& tableSegmentData) {
- wasm.removeImport(EMSCRIPTEN_ASM_CONST); // we create _sig versions
+ removeImportsWithSubstring(wasm, EMSCRIPTEN_ASM_CONST); // we create _sig versions
std::vector<Function*> generatedFunctions;
std::unordered_set<std::string> sigs;
@@ -103,7 +115,7 @@ struct AsmConstWalker : public PostWalker<AsmConstWalker, Visitor<AsmConstWalker
};
void AsmConstWalker::visitCallImport(CallImport* curr) {
- if (curr->target == EMSCRIPTEN_ASM_CONST) {
+ if (curr->target.hasSubstring(EMSCRIPTEN_ASM_CONST)) {
auto arg = curr->operands[0]->cast<Const>();
auto address = arg->value.geti32();
auto segmentIterator = segmentsByAddress.find(address);
@@ -122,7 +134,14 @@ void AsmConstWalker::visitCallImport(CallImport* curr) {
} else {
id = ids[code];
}
- std::string sig = getSig(curr);
+ std::string baseSig = getSig(curr);
+ std::string sig = "";
+ for (size_t i = 0; i < baseSig.size(); ++i) {
+ // Omit the signature of the "code" parameter, taken as a string, as the first argument
+ if (i != 1) {
+ sig += baseSig[i];
+ }
+ }
sigsForCode[code].insert(sig);
std::string fixedTarget = EMSCRIPTEN_ASM_CONST.str + std::string("_") + sig;
curr->target = cashew::IString(fixedTarget.c_str(), false);
diff --git a/src/wasm-linker.h b/src/wasm-linker.h
index 608576190..663bb9e78 100644
--- a/src/wasm-linker.h
+++ b/src/wasm-linker.h
@@ -25,6 +25,7 @@
#define WASM_WASM_LINK_H
#include "support/archive.h"
+#include "support/name.h"
#include "support/utilities.h"
#include "wasm.h"
diff --git a/src/wasm.h b/src/wasm.h
index 4ad0870cc..21f7b420e 100644
--- a/src/wasm.h
+++ b/src/wasm.h
@@ -58,36 +58,11 @@
#include "mixed_arena.h"
#include "pretty_printing.h"
#include "support/bits.h"
+#include "support/name.h"
#include "support/utilities.h"
namespace wasm {
-// We use a Name for all of the identifiers. These are IStrings, so they are
-// all interned - comparisons etc are just pointer comparisons, so there is no
-// perf loss. Having names everywhere makes using the AST much nicer (for
-// example, block names are strings and not offsets, which makes composition
-// - adding blocks, removing blocks - easy). One exception is local variables,
-// where we do use indices, as they are a large proportion of the AST,
-// perf matters a lot there, and compositionality is not a problem.
-// TODO: as an optimization, IString values < some threshold could be considered
-// numerical indices directly.
-
-struct Name : public cashew::IString {
- Name() : cashew::IString() {}
- Name(const char* str) : cashew::IString(str, false) {}
- Name(cashew::IString str) : cashew::IString(str) {}
- Name(const std::string& str) : cashew::IString(str.c_str(), false) {}
-
- friend std::ostream& operator<<(std::ostream& o, Name name) {
- assert(name.str);
- return o << '$' << name.str; // reference interpreter requires we prefix all names
- }
-
- static Name fromInt(size_t i) {
- return cashew::IString(std::to_string(i).c_str(), false);
- }
-};
-
// An index in a wasm module
typedef uint32_t Index;
diff --git a/test/dot_s/asm_const.wast b/test/dot_s/asm_const.wast
index c9c8c638d..8580c63d6 100644
--- a/test/dot_s/asm_const.wast
+++ b/test/dot_s/asm_const.wast
@@ -1,12 +1,12 @@
(module
(type $FUNCSIG$vi (func (param i32)))
(import "env" "memory" (memory $0 1))
- (import "env" "emscripten_asm_const_vi" (func $emscripten_asm_const_vi (param i32)))
+ (import "env" "emscripten_asm_const_v" (func $emscripten_asm_const_v (param i32)))
(table 0 anyfunc)
(data (i32.const 16) "{ Module.print(\"hello, world!\"); }\00")
(export "main" (func $main))
(func $main (result i32)
- (call $emscripten_asm_const_vi
+ (call $emscripten_asm_const_v
(i32.const 0)
)
(return
@@ -14,4 +14,4 @@
)
)
)
-;; METADATA: { "asmConsts": {"0": ["{ Module.print(\"hello, world!\"); }", ["vi"]]},"staticBump": 51, "initializers": [] }
+;; METADATA: { "asmConsts": {"0": ["{ Module.print(\"hello, world!\"); }", ["v"]]},"staticBump": 51, "initializers": [] }
diff --git a/test/dot_s/memops.wast b/test/dot_s/memops.wast
index bb55b5b51..073b5178a 100644
--- a/test/dot_s/memops.wast
+++ b/test/dot_s/memops.wast
@@ -1,7 +1,7 @@
(module
(type $FUNCSIG$vi (func (param i32)))
(import "env" "memory" (memory $0 1))
- (import "env" "emscripten_asm_const_vi" (func $emscripten_asm_const_vi (param i32)))
+ (import "env" "emscripten_asm_const_v" (func $emscripten_asm_const_v (param i32)))
(table 0 anyfunc)
(data (i32.const 16) "{ Module.print(\"hello, world! \" + HEAP32[8>>2]); }\00")
(export "main" (func $main))
@@ -10,7 +10,7 @@
(i32.const 8)
(get_local $0)
)
- (call $emscripten_asm_const_vi
+ (call $emscripten_asm_const_v
(i32.const 0)
)
(return)
@@ -206,4 +206,4 @@
)
)
)
-;; METADATA: { "asmConsts": {"0": ["{ Module.print(\"hello, world! \" + HEAP32[8>>2]); }", ["vi"]]},"staticBump": 67, "initializers": [] }
+;; METADATA: { "asmConsts": {"0": ["{ Module.print(\"hello, world! \" + HEAP32[8>>2]); }", ["v"]]},"staticBump": 67, "initializers": [] }
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-04 21:55:23 +0000