swr/rast: Fix addPassesToEmitFile usage with llvm-7.0.

Fix build error after llvm-7.0svn r332881 ("CodeGen: Add a dwo output
file argument to addPassesToEmitFile and hook it up to dwo output.").

  CXX      rasterizer/jitter/libmesaswr_la-JitManager.lo
rasterizer/jitter/JitManager.cpp:368:93: error: too few arguments to function call, expected at least 4, have 3
        pTarget->addPassesToEmitFile(*pMPasses, filestream, TargetMachine::CGFT_AssemblyFile);
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~                                                        ^

Reviewed-by: Bruce Cherniak <[email protected]>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/gallium/drivers/swr/rasterizer/jitter/JitManager.cpp b/src/gallium/drivers/swr/rasterizer/jitter/JitManager.cpp
index 5cf527ecd89..5bacf551261 100644
--- a/src/gallium/drivers/swr/rasterizer/jitter/JitManager.cpp
+++ b/src/gallium/drivers/swr/rasterizer/jitter/JitManager.cpp
@@ -414,7 +414,11 @@ void JitManager::DumpAsm(Function *pFunction, const char *fileName)
         legacy::PassManager *pMPasses         = new legacy::PassManager();
         auto *               pTarget          = mpExec->getTargetMachine();
         pTarget->Options.MCOptions.AsmVerbose = true;
+#if LLVM_VERSION_MAJOR >= 7
+        pTarget->addPassesToEmitFile(*pMPasses, filestream, nullptr, TargetMachine::CGFT_AssemblyFile);
+#else
         pTarget->addPassesToEmitFile(*pMPasses, filestream, TargetMachine::CGFT_AssemblyFile);
+#endif
         pMPasses->run(*pModule);
         delete pMPasses;
         pTarget->Options.MCOptions.AsmVerbose = false;