st/clover: Fix build against LLVM 3.8 SVN r244928HEADmaster

raw_svector_ostream::flush() is now unnecessary and forbidden:

  CXX      llvm/libclllvm_la-invocation.lo
../../../../../src/gallium/state_trackers/clover/llvm/invocation.cpp: In function 'clover::module {anonymous}::build_module_llvm(llvm::Module*, unsigned int (&)[7])':
../../../../../src/gallium/state_trackers/clover/llvm/invocation.cpp:574:29: error: use of deleted function 'void llvm::raw_svector_ostream::flush()'
       bitcode_ostream.flush();
                             ^
In file included from /home/daenzer/src/llvm-git/llvm/include/clang/Basic/VirtualFileSystem.h:22:0,
                 from /home/daenzer/src/llvm-git/llvm/include/clang/Basic/FileManager.h:20,
                 from /home/daenzer/src/llvm-git/llvm/include/clang/Basic/SourceManager.h:38,
                 from /home/daenzer/src/llvm-git/llvm/include/clang/Frontend/CompilerInstance.h:16,
                 from ../../../../../src/gallium/state_trackers/clover/llvm/invocation.cpp:25:
/home/daenzer/src/llvm-git/llvm/include/llvm/Support/raw_ostream.h:512:8: note: declared here
   void flush() = delete;
        ^
Makefile:862: recipe for target 'llvm/libclllvm_la-invocation.lo' failed

Reviewed-by: Francisco Jerez <currojerez@riseup.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/clover/llvm/invocation.cpp b/src/gallium/state_trackers/clover/llvm/invocation.cpp
index 86859af353..63c3f8ee49 100644
--- a/src/gallium/state_trackers/clover/llvm/invocation.cpp
+++ b/src/gallium/state_trackers/clover/llvm/invocation.cpp
@@ -571,7 +571,9 @@ namespace {
       llvm::raw_svector_ostream bitcode_ostream(llvm_bitcode);
       llvm::BitstreamWriter writer(llvm_bitcode);
       llvm::WriteBitcodeToFile(mod, bitcode_ostream);
+#if HAVE_LLVM < 0x0308
       bitcode_ostream.flush();
+#endif
 
       const std::vector<llvm::Function *> kernels = find_kernels(mod);
       for (unsigned i = 0; i < kernels.size(); ++i) {