[JSC] Attach further more inline capacity to wasm compiler related da…

…ta structures

https://bugs.webkit.org/show_bug.cgi?id=278366
rdar://134312057

Reviewed by Yijia Huang.

Avoid unnecessary heap allocation / deallocation more.

* Source/JavaScriptCore/wasm/WasmCallingConvention.h:
(JSC::Wasm::CallInformation::CallInformation):
(JSC::Wasm::WasmCallingConvention::callInformationFor const):
(JSC::Wasm::JSCallingConvention::callInformationFor const):
(JSC::Wasm::CCallingConventionArmThumb2::callInformationFor const):
* Source/JavaScriptCore/wasm/WasmLLIntGenerator.cpp:
(JSC::Wasm::LLIntGenerator::addArguments):
(JSC::Wasm::LLIntGenerator::addLoop):

Canonical link: https://commits.webkit.org/282498@main

Source/JavaScriptCore/wasm/WasmCallingConvention.h

@@ -81,7 +81,7 @@ enum class CallRole : uint8_t {
 };
 
 struct CallInformation {
-    CallInformation(ArgumentLocation passedThisArgument, Vector<ArgumentLocation>&& parameters, Vector<ArgumentLocation, 1>&& returnValues, size_t stackOffset)
+    CallInformation(ArgumentLocation passedThisArgument, Vector<ArgumentLocation, 8>&& parameters, Vector<ArgumentLocation, 1>&& returnValues, size_t stackOffset)
         : thisArgument(passedThisArgument)
         , params(WTFMove(parameters))
         , results(WTFMove(returnValues))
@@ -111,7 +111,7 @@ struct CallInformation {
     bool resultsIncludeI64 : 1 { false };
     bool argumentsOrResultsIncludeV128 : 1 { false };
     ArgumentLocation thisArgument;
-    Vector<ArgumentLocation> params;
+    Vector<ArgumentLocation, 8> params;
     Vector<ArgumentLocation, 1> results;
     // As a callee this includes CallerFrameAndPC as a caller it does not.
     size_t headerAndArgumentStackSizeInBytes;
@@ -309,7 +309,7 @@ class WasmCallingConvention {
         headerSize += sizeof(Register);
 
         size_t argStackOffset = headerSize;
-        Vector<ArgumentLocation> params(signature.argumentCount());
+        Vector<ArgumentLocation, 8> params(signature.argumentCount());
         for (size_t i = 0; i < signature.argumentCount(); ++i) {
             argumentsIncludeI64 |= signature.argumentType(i).isI64();
             argumentsOrResultsIncludeV128 |= signature.argumentType(i).isV128();
@@ -400,7 +400,7 @@ class JSCallingConvention {
         ArgumentLocation thisArgument = { role == CallRole::Caller ? ValueLocation::stackArgument(stackOffset) : ValueLocation::stack(stackOffset), widthForBytes(sizeof(void*)) };
         stackOffset += sizeof(Register);
 
-        Vector<ArgumentLocation> params;
+        Vector<ArgumentLocation, 8> params;
         for (size_t i = 0; i < signature.as<FunctionSignature>()->argumentCount(); ++i)
             params.append(marshallLocation(role, signature.as<FunctionSignature>()->argumentType(i), gpArgumentCount, fpArgumentCount, stackOffset));
 
@@ -590,7 +590,7 @@ class CCallingConventionArmThumb2 {
         headerSize += sizeof(Register);
 
         size_t argStackOffset = headerSize;
-        Vector<ArgumentLocation> params(signature.argumentCount());
+        Vector<ArgumentLocation, 8> params(signature.argumentCount());
         for (size_t i = 0; i < signature.argumentCount(); ++i) {
             argumentsIncludeI64 |= signature.argumentType(i).isI64();
             ASSERT(!signature.argumentType(i).isV128());

Source/JavaScriptCore/wasm/WasmLLIntGenerator.cpp

@@ -884,7 +884,7 @@ auto LLIntGenerator::addArguments(const TypeDefinition& signature) -> PartialRes
     uint32_t fprIndex = maxGPRIndex;
     uint32_t stackIndex = 1;
 
-    Vector<VirtualRegister> registerArguments(gprCount + fprCount);
+    Vector<VirtualRegister, 32> registerArguments(gprCount + fprCount);
     for (uint32_t i = 0; i < gprCount + fprCount; i++)
         registerArguments[i] = push(NoConsistencyCheck);
 
@@ -1084,7 +1084,6 @@ auto LLIntGenerator::addLoop(BlockSignature signature, Stack& enclosingStack, Co
 
     block = ControlType::loop(signature, m_stackSize, WTFMove(body), WTFMove(continuation));
 
-    Vector<unsigned> unresolvedOffsets;
     Vector<VirtualRegister> osrEntryData;
     for (uint32_t i = 0; i < m_codeBlock->m_numArguments; i++)
         osrEntryData.append(m_normalizedArguments[i]);