The fast and the furious, register drift.

Enable the register allocator for X86_64 on Linux and MacOS. The
implications are:
- handle as much as possible with current code with as few changes as
possible
- temporarily force the register allocator to spill unop/binop arguments
to the stack by doing a call in the implementation (as is the current
case), so no change is needed here
- only have loadThis and loadConst handle registers
- have any method that might need to handle registrers actually cope
with them
- the inline versions of binops are not generated, as they cannot cope
with registers. This will change when ISel for binops is added in the
next patch.

This means that we are still running with the handbrakes on, but allow
for full-throttle in certain/limited cases.

Note about the changed test: multiplication always returns a Number
(double), so the operands are passed as doubles, so __qmljs_mul will
return a double. For addition this is different: because it might return
a Number or a String, the operands are passed as whatever fits best. So
__qmljs_add will return an int when both operands are ints. Hence the
change to the tests.

Change-Id: If5bd7dffca8f7de5ba45af700b9c7bb568fc74b7
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/src/qml/jsruntime/qv4runtime_p.h b/src/qml/jsruntime/qv4runtime_p.h
index 5f3f45263c..4ae28ab094 100644
--- a/src/qml/jsruntime/qv4runtime_p.h
+++ b/src/qml/jsruntime/qv4runtime_p.h
@@ -158,7 +158,7 @@ void __qmljs_foreach_next_property_name(QV4::Value *result, const QV4::Value &fo
 
 // type conversion and testing
 QV4::Value __qmljs_to_primitive(const QV4::Value &value, int typeHint);
-QV4::Bool __qmljs_to_boolean(const QV4::Value &value);
+Q_QML_EXPORT QV4::Bool __qmljs_to_boolean(const QV4::Value &value);
 double __qmljs_to_number(const QV4::Value &value);
 QV4::Value __qmljs_to_string(const QV4::Value &value, QV4::ExecutionContext *ctx);
 Q_QML_EXPORT QV4::String *__qmljs_convert_to_string(QV4::ExecutionContext *ctx, const QV4::Value &value);
@@ -178,6 +178,11 @@ void __qmljs_not(QV4::Value *result, const QV4::Value &value);
 void __qmljs_increment(QV4::Value *result, const QV4::Value &value);
 void __qmljs_decrement(QV4::Value *result, const QV4::Value &value);
 
+Q_QML_EXPORT int __qmljs_value_to_int32(const Value &value);
+Q_QML_EXPORT int __qmljs_double_to_int32(double d);
+Q_QML_EXPORT unsigned __qmljs_value_to_uint32(const Value &value);
+Q_QML_EXPORT unsigned __qmljs_double_to_uint32(double d);
+
 void __qmljs_delete_subscript(QV4::ExecutionContext *ctx, QV4::Value *result, const QV4::Value &base, const QV4::Value &index);
 void __qmljs_delete_member(QV4::ExecutionContext *ctx, QV4::Value *result, const QV4::Value &base, QV4::String *name);
 void __qmljs_delete_name(QV4::ExecutionContext *ctx, QV4::Value *result, QV4::String *name);