[PM] Remove the old 'PassManager.h' header file at the top level of

LLVM's include tree and the use of using declarations to hide the
'legacy' namespace for the old pass manager.

This undoes the primary modules-hostile change I made to keep
out-of-tree targets building. I sent an email inquiring about whether
this would be reasonable to do at this phase and people seemed fine with
it, so making it a reality. This should allow us to start bootstrapping
with modules to a certain extent along with making it easier to mix and
match headers in general.

The updates to any code for users of LLVM are very mechanical. Switch
from including "llvm/PassManager.h" to "llvm/IR/LegacyPassManager.h".
Qualify the types which now produce compile errors with "legacy::". The
most common ones are "PassManager", "PassManagerBase", and
"FunctionPassManager".

llvm-svn: 229094

1 files changed, 8 insertions, 9 deletions

diff --git a/llvm/unittests/IR/LegacyPassManagerTest.cpp b/llvm/unittests/IR/LegacyPassManagerTest.cpp
index 6b557c9b477..9cb94140766 100644
--- a/llvm/unittests/IR/LegacyPassManagerTest.cpp
+++ b/llvm/unittests/IR/LegacyPassManagerTest.cpp
@@ -8,13 +8,12 @@
 //===----------------------------------------------------------------------===//
 //
 // This unit test exercises the legacy pass manager infrastructure. We use the
-// old names as well to ensure that the source-level compatibility wrapper
-// works for out-of-tree code that expects to include llvm/PassManager.h and
-// subclass the core pass classes.
+// old names as well to ensure that the source-level compatibility is preserved
+// where possible.
 //
 //===----------------------------------------------------------------------===//
 
-#include "llvm/PassManager.h"
+#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/Analysis/CallGraphSCCPass.h"
 #include "llvm/Analysis/LoopInfo.h"
@@ -302,7 +301,7 @@ namespace llvm {
 
       mNDM->run = mNDNM->run = mDNM->run = mNDM2->run = 0;
 
-      PassManager Passes;
+      legacy::PassManager Passes;
       Passes.add(new DataLayoutPass());
       Passes.add(mNDM2);
       Passes.add(mNDM);
@@ -326,7 +325,7 @@ namespace llvm {
 
       mNDM->run = mNDNM->run = mDNM->run = mNDM2->run = 0;
 
-      PassManager Passes;
+      legacy::PassManager Passes;
       Passes.add(new DataLayoutPass());
       Passes.add(mNDM);
       Passes.add(mNDNM);
@@ -348,7 +347,7 @@ namespace llvm {
     void MemoryTestHelper(int run) {
       std::unique_ptr<Module> M(makeLLVMModule());
       T *P = new T();
-      PassManager Passes;
+      legacy::PassManager Passes;
       Passes.add(new DataLayoutPass());
       Passes.add(P);
       Passes.run(*M);
@@ -359,7 +358,7 @@ namespace llvm {
     void MemoryTestHelper(int run, int N) {
       Module *M = makeLLVMModule();
       T *P = new T();
-      PassManager Passes;
+      legacy::PassManager Passes;
       Passes.add(new DataLayoutPass());
       Passes.add(P);
       Passes.run(*M);
@@ -397,7 +396,7 @@ namespace llvm {
       {
         SCOPED_TRACE("Running OnTheFlyTest");
         struct OnTheFlyTest *O = new OnTheFlyTest();
-        PassManager Passes;
+        legacy::PassManager Passes;
         Passes.add(new DataLayoutPass());
         Passes.add(O);
         Passes.run(*M);