V4: Add a baseline JIT

This patch add a JIT back in for all platforms that supported JITting
before, with the exception of MIPS.

Change-Id: I51bc5ce3a2ac40e0510bd72a563af897c5b60343
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 10 insertions, 1 deletions

diff --git a/src/qml/jsruntime/qv4engine.cpp b/src/qml/jsruntime/qv4engine.cpp
index b92bd3992d..beb856c2f6 100644
--- a/src/qml/jsruntime/qv4engine.cpp
+++ b/src/qml/jsruntime/qv4engine.cpp
@@ -793,7 +793,7 @@ int CppStackFrame::lineNumber() const
     };
 
     const QV4::CompiledData::Function *cf = v4Function->compiledFunction;
-    uint offset = static_cast<uint>(instructionPointer - v4Function->codeData);
+    uint offset = instructionPointer;
     const CompiledData::CodeOffsetToLine *lineNumbers = cf->lineNumberTable();
     uint nLineNumbers = cf->nLineNumbers;
     const CompiledData::CodeOffsetToLine *line = std::lower_bound(lineNumbers, lineNumbers + nLineNumbers, offset, findLine) - 1;
@@ -1545,6 +1545,15 @@ QV4::ReturnedValue ExecutionEngine::metaTypeToJS(int type, const void *data)
     return 0;
 }
 
+bool ExecutionEngine::canJIT()
+{
+#ifdef V4_ENABLE_JIT
+    return true;
+#else
+    return false;
+#endif
+}
+
 // Converts a JS value to a meta-type.
 // data must point to a place that can store a value of the given type.
 // Returns true if conversion succeeded, false otherwise.