Native method wrapper generation

[Xerxes Rånby]

Gary Benson wrote:
> Hi all,
>
> This commit adds native wrapper generation to Shark.  It also removes
> support for LLVM < 2.6, because the new code requires it.  I'll write
> this up in more detail tomorrow with some benchmarks.
>
> Cheers,
> Gary
>
>   
Hi

+void SharkCompiler::generate_native_code(SharkEntry* entry,
...
+#if SHARK_LLVM_VERSION >= 27
+      if (!fnmatch(SharkPrintAsmOf, name, 0)) {
+        llvm::SetCurrentDebugType(X86_ONLY("x86-emitter") NOT_X86("jit"));
+        llvm::DebugFlag = true;
+      }
+      else {
+        llvm::SetCurrentDebugType(""); 
+        llvm::DebugFlag = false;
+      }
+#else

This part of the code dont work with llvm 2.7svn *release* builds since

llvm::DebugFlag

and

llvm::SetCurrentDebugType

are only defined in the llvm headers for llvm debug builds.

This was only a minor issue before the shark rewrite since the code then
where only included in non product hotspot builds, now it fail on
product builds as well in combination with a llvm 2.7svn release build.
One way to fix this would be to introduce a new debug flag based on the
info from
llvm-config --build-mode
that are set to true when llvm-config --build-mode spits out "Debug" ,
and then conditionalise the code block to be compiled if the new debug
flag are percent.

Cheers
Xerxes