added TargetRegistry_targets_list

this allows all targets to be enumerated. this is generally useful,
but i specifically wanted to be able to see which targets report
having a disassembler. it is necessary to init the various
target components in order for them to report that they have one,
thus i added InitializeAllDisassemblers and InitializeAllAsmParsers
to TargetSelect.py

llvmpy/include/llvm_binding/extra.h

@@ -946,7 +946,6 @@ PyObject* TargetRegistry_lookupTarget(const std::string &Arch,
     }
 }
 
-
 static
 PyObject* TargetRegistry_getClosestTargetForJIT(PyObject* Error)
 {
@@ -967,6 +966,16 @@ PyObject* TargetRegistry_getClosestTargetForJIT(PyObject* Error)
 
 }
 
+static
+PyObject* TargetRegistry_targets_list()
+{
+    using namespace llvm;
+
+    return iterator_to_pylist_deref<TargetRegistry::iterator>(
+                  TargetRegistry::begin(), TargetRegistry::end(),
+                  "llvm::Target", "llvm::Target");
+}
+
 static
 PyObject* llvm_sys_getHostCPUFeatures(PyObject* Features)
 {

llvmpy/src/Support/TargetRegistry.py

@@ -67,4 +67,5 @@ class TargetRegistry:
                                     PyObjectPtr,          # std::string &Error
                                     )
 
+    targetsList = CustomStaticMethod('TargetRegistry_targets_list', PyObjectPtr)
 

llvmpy/src/Support/TargetSelect.py

@@ -18,6 +18,9 @@ InitializeAllTargets = llvm.Function('InitializeAllTargets')
 InitializeAllTargetInfos = llvm.Function('InitializeAllTargetInfos')
 InitializeAllTargetMCs = llvm.Function('InitializeAllTargetMCs')
 InitializeAllAsmPrinters = llvm.Function('InitializeAllAsmPrinters')
+InitializeAllDisassemblers = llvm.Function('InitializeAllDisassemblers')
+InitializeAllAsmParsers = llvm.Function('InitializeAllAsmParsers')
+
 
 for target in TARGETS_BUILT:
     decls = 'Target', 'TargetInfo', 'TargetMC', 'AsmPrinter'

test/target_info.py

@@ -0,0 +1,30 @@
+from llvmpy.api import llvm; 
+llvm.InitializeAllTargets()
+llvm.InitializeAllTargetInfos()
+llvm.InitializeAllTargetMCs()
+llvm.InitializeAllAsmPrinters()
+llvm.InitializeAllDisassemblers()
+llvm.InitializeAllAsmParsers()
+
+mthds = (
+    ("description:",            "getShortDescription"),
+    ("has JIT:",                "hasJIT"             ),
+    ("has target machine:",     "hasTargetMachine"   ),
+    ("has asm backend:",        "hasMCAsmBackend"    ),
+    ("has asm parser:",         "hasMCAsmParser"     ),
+    ("has asm printer:",        "hasAsmPrinter"      ),
+    ("has disassembler:",       "hasMCDisassembler"  ),
+    ("has inst printer:",       "hasMCInstPrinter"   ),
+    ("has code emitter:",       "hasMCCodeEmitter"   ),
+    ("has object streamer:",    "hasMCObjectStreamer"),
+    ("has asm streamer:",       "hasAsmStreamer"     )
+)
+
+for target in llvm.TargetRegistry.targetsList():
+    print("target %s" % target.getName())
+    fmt = "%3s%-25s%r"
+    for (desc, mthd) in mthds:
+        print(fmt % ("", desc, getattr(target, mthd)()))
+
+    print("")
+