FTL should fully support Switch (it currently lacks the SwitchString variant)
https://bugs.webkit.org/show_bug.cgi?id=144348
Reviewed by Benjamin Poulain.
This adds SwitchString support to the FTL. This is already tested by switch microbenchmarks
in LayoutTests/js/regress.
* dfg/DFGCommon.cpp:
(JSC::DFG::stringLessThan):
* dfg/DFGCommon.h:
* dfg/DFGOperations.cpp:
* dfg/DFGOperations.h:
* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::StringSwitchCase::operator<): Deleted.
* dfg/DFGSpeculativeJIT.h:
(JSC::DFG::SpeculativeJIT::StringSwitchCase::operator<):
* ftl/FTLCapabilities.cpp:
(JSC::FTL::canCompile):
* ftl/FTLIntrinsicRepository.h:
* ftl/FTLLowerDFGToLLVM.cpp:
(JSC::FTL::LowerDFGToLLVM::compileSwitch):
(JSC::FTL::LowerDFGToLLVM::switchString):
(JSC::FTL::LowerDFGToLLVM::StringSwitchCase::StringSwitchCase):
(JSC::FTL::LowerDFGToLLVM::StringSwitchCase::operator<):
(JSC::FTL::LowerDFGToLLVM::CharacterCase::CharacterCase):
(JSC::FTL::LowerDFGToLLVM::CharacterCase::operator<):
(JSC::FTL::LowerDFGToLLVM::switchStringRecurse):
(JSC::FTL::LowerDFGToLLVM::switchStringSlow):
(JSC::FTL::LowerDFGToLLVM::appendOSRExit):
* ftl/FTLOutput.cpp:
(JSC::FTL::Output::check):
* ftl/FTLOutput.h:
* ftl/FTLWeight.h:
(JSC::FTL::Weight::inverse):
* jit/JITOperations.h:
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@183525 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Source/JavaScriptCore/dfg/DFGOperations.cpp b/Source/JavaScriptCore/dfg/DFGOperations.cpp
index 93c1ce3..ec8bc2f 100644
--- a/Source/JavaScriptCore/dfg/DFGOperations.cpp
+++ b/Source/JavaScriptCore/dfg/DFGOperations.cpp
@@ -1077,6 +1077,14 @@
return static_cast<char*>(exec->codeBlock()->stringSwitchJumpTable(tableIndex).ctiForValue(string->value(exec).impl()).executableAddress());
}
+int32_t JIT_OPERATION operationSwitchStringAndGetBranchOffset(ExecState* exec, size_t tableIndex, JSString* string)
+{
+ VM& vm = exec->vm();
+ NativeCallFrameTracer tracer(&vm, exec);
+
+ return exec->codeBlock()->stringSwitchJumpTable(tableIndex).offsetForValue(string->value(exec).impl(), std::numeric_limits<int32_t>::min());
+}
+
void JIT_OPERATION operationNotifyWrite(ExecState* exec, WatchpointSet* set)
{
VM& vm = exec->vm();
