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29 #include <wtf/Platform.h>
33 #include "CodeOrigin.h"
34 #include "VirtualRegister.h"
36 /* DFG_ENABLE() - turn on a specific features in the DFG JIT */
37 #define DFG_ENABLE(DFG_FEATURE) (defined DFG_ENABLE_##DFG_FEATURE && DFG_ENABLE_##DFG_FEATURE)
39 // Emit various logging information for debugging, including dumping the dataflow graphs.
40 #define DFG_ENABLE_DEBUG_VERBOSE 0
41 // Emit dumps during propagation, in addition to just after.
42 #define DFG_ENABLE_DEBUG_PROPAGATION_VERBOSE 0
43 // Emit logging for OSR exit value recoveries at every node, not just nodes that
44 // actually has speculation checks.
45 #define DFG_ENABLE_VERBOSE_VALUE_RECOVERIES 0
46 // Enable generation of dynamic checks into the instruction stream.
48 #define DFG_ENABLE_JIT_ASSERT 1
50 #define DFG_ENABLE_JIT_ASSERT 0
52 // Consistency check contents compiler data structures.
53 #define DFG_ENABLE_CONSISTENCY_CHECK 0
54 // Emit a breakpoint into the head of every generated function, to aid debugging in GDB.
55 #define DFG_ENABLE_JIT_BREAK_ON_EVERY_FUNCTION 0
56 // Emit a breakpoint into the head of every generated node, to aid debugging in GDB.
57 #define DFG_ENABLE_JIT_BREAK_ON_EVERY_BLOCK 0
58 // Emit a breakpoint into the head of every generated node, to aid debugging in GDB.
59 #define DFG_ENABLE_JIT_BREAK_ON_EVERY_NODE 0
60 // Emit a breakpoint into the speculation failure code.
61 #define DFG_ENABLE_JIT_BREAK_ON_SPECULATION_FAILURE 0
62 // Log every speculation failure.
63 #define DFG_ENABLE_VERBOSE_SPECULATION_FAILURE 0
64 // Disable the DFG JIT without having to touch Platform.h
65 #define DFG_DEBUG_LOCAL_DISBALE 0
66 // Enable OSR entry from baseline JIT.
67 #define DFG_ENABLE_OSR_ENTRY ENABLE(DFG_JIT)
68 // Generate stats on how successful we were in making use of the DFG jit, and remaining on the hot path.
69 #define DFG_ENABLE_SUCCESS_STATS 0
70 // Used to enable conditionally supported opcodes that currently result in performance regressions.
71 #define DFG_ENABLE_RESTRICTIONS 1
73 namespace JSC { namespace DFG {
75 // Type for a reference to another node in the graph.
76 typedef uint32_t NodeIndex;
77 static const NodeIndex NoNode = UINT_MAX;
79 typedef uint32_t BlockIndex;
80 static const BlockIndex NoBlock = UINT_MAX;
82 struct NodeIndexTraits {
83 static NodeIndex defaultValue() { return NoNode; }
84 static void dump(NodeIndex value, FILE* out)
89 fprintf(out, "@%u", value);
93 } } // namespace JSC::DFG
95 #endif // ENABLE(DFG_JIT)