[Logging] Replace Log::Printf with LLDB_LOG macro (NFC)

This patch replaces explicit calls to log::Printf with the new LLDB_LOGF
macro. The macro is similar to LLDB_LOG but supports printf-style format
strings, instead of formatv-style format strings.

So instead of writing:

  if (log)
    log->Printf("%s\n", str);

You'd write:

  LLDB_LOG(log, "%s\n", str);

This change was done mechanically with the command below. I replaced the
spurious if-checks with vim, since I know how to do multi-line
replacements with it.

  find . -type f -name '*.cpp' -exec \
  sed -i '' -E 's/log->Printf\(/LLDB_LOGF\(log, /g' "{}" +

Differential revision: https://reviews.llvm.org/D65128

llvm-svn: 366936

lldb/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptExpressionOpts.cpp

@@ -140,10 +140,10 @@ bool RenderScriptRuntimeModulePass::runOnModule(llvm::Module &module) {
     // We've been using a triple and datalayout of some ARM variant all along,
     // so we need to let the backend know that this is no longer the case.
     if (log) {
-      log->Printf("%s - Changing RS target triple to '%s'", __FUNCTION__,
-                  real_triple.str().c_str());
-      log->Printf(
-          "%s - Changing RS datalayout to '%s'", __FUNCTION__,
+      LLDB_LOGF(log, "%s - Changing RS target triple to '%s'", __FUNCTION__,
+                real_triple.str().c_str());
+      LLDB_LOGF(
+          log, "%s - Changing RS datalayout to '%s'", __FUNCTION__,
           target_machine->createDataLayout().getStringRepresentation().c_str());
     }
     module.setTargetTriple(real_triple);