uselistorder: Remove the global bits

Remove all the global bits to do with preserving use-list order by
moving the `cl::opt`s to the individual tools that want them.  There's a
minor functionality change to `libLTO`, in that you can't send in
`-preserve-bc-uselistorder=false`, but making that bit settable (if it's
worth doing) should be through explicit LTO API.

As a drive-by fix, I removed some includes of `UseListOrder.h` that were
made unnecessary by recent commits.

llvm-svn: 234973

1 files changed, 1 insertions, 6 deletions

diff --git a/llvm/lib/LTO/LTOCodeGenerator.cpp b/llvm/lib/LTO/LTOCodeGenerator.cpp
index c9ff5b2d019..b4a70119cc2 100644
--- a/llvm/lib/LTO/LTOCodeGenerator.cpp
+++ b/llvm/lib/LTO/LTOCodeGenerator.cpp
@@ -29,7 +29,6 @@
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Mangler.h"
 #include "llvm/IR/Module.h"
-#include "llvm/IR/UseListOrder.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/InitializePasses.h"
 #include "llvm/LTO/LTOModule.h"
@@ -216,7 +215,7 @@ bool LTOCodeGenerator::writeMergedModules(const char *path,
 
   // write bitcode to it
   WriteBitcodeToFile(IRLinker.getModule(), Out.os(),
-                     shouldPreserveBitcodeUseListOrder());
+                     /* ShouldPreserveUseListOrder */ true);
   Out.os().close();
 
   if (Out.os().has_error()) {
@@ -606,10 +605,6 @@ void LTOCodeGenerator::setCodeGenDebugOptions(const char *options) {
 }
 
 void LTOCodeGenerator::parseCodeGenDebugOptions() {
-  // Turn on -preserve-bc-uselistorder by default, but let the command-line
-  // override it.
-  setPreserveBitcodeUseListOrder(true);
-
   // if options were requested, set them
   if (!CodegenOptions.empty())
     cl::ParseCommandLineOptions(CodegenOptions.size(),