fixes to make this branch compatible with llvm versions before 3.4

test/example-instruction-info.py

@@ -3,33 +3,36 @@ from llvmpy import api, extra
 
 
 def main():
-  triple = "i386--"
+    if llvm.version < (3, 4):
+        return 0
 
-  print("init start")
-  api.llvm.InitializeAllTargets()
-  api.llvm.InitializeAllTargetInfos()
-  api.llvm.InitializeAllTargetMCs()
-  api.llvm.InitializeAllAsmParsers()
-  api.llvm.InitializeAllAsmPrinters()
-  api.llvm.InitializeAllDisassemblers()
-  print("init done\n")
+    triple = "i386--"
 
-  tm = llvm.target.TargetMachine.x86()
-  if not tm:
-    print("error: failed to lookup target x86 \n")
-    return 1
+    print("init start")
+    api.llvm.InitializeAllTargets()
+    api.llvm.InitializeAllTargetInfos()
+    api.llvm.InitializeAllTargetMCs()
+    api.llvm.InitializeAllAsmParsers()
+    api.llvm.InitializeAllAsmPrinters()
+    api.llvm.InitializeAllDisassemblers()
+    print("init done\n")
 
-  print("created target machine\n")
+    tm = llvm.target.TargetMachine.x86()
+    if not tm:
+        print("error: failed to lookup target x86 \n")
+        return 1
 
-  MII = tm.instr_info
-  if not MII:
-    print("error: no instruction info for target " + triple + "\n")
-    return 1
+    print("created target machine\n")
 
-  print("created instr info\n")
-  MID = MII.get(919) #int3
-  print("INT3(%d): flags=0x%x, tsflags=0x%x\n" % (MID.getOpcode(), MID.getFlags(), MID.TSFlags))
+    MII = tm.instr_info
+    if not MII:
+        print("error: no instruction info for target " + triple + "\n")
+        return 1
 
-  return 0
+    print("created instr info\n")
+    MID = MII.get(919) #int3
+    print("INT3(%d): flags=0x%x, tsflags=0x%x\n" % (MID.getOpcode(), MID.getFlags(), MID.TSFlags))
+
+    return 0
 
 exit(main())

test/testall.py

@@ -652,6 +652,9 @@ def do_llvm_target():
          tm.is_little_endian()
 
 def do_llvm_mc():
+    if llvm.version < (3, 4):
+        return
+
     from llvm import target
     from llvm import mc