Sink all InitializePasses.h includes

This file lists every pass in LLVM, and is included by Pass.h, which is
very popular. Every time we add, remove, or rename a pass in LLVM, it
caused lots of recompilation.

I found this fact by looking at this table, which is sorted by the
number of times a file was changed over the last 100,000 git commits
multiplied by the number of object files that depend on it in the
current checkout:
  recompiles    touches affected_files  header
  342380        95      3604    llvm/include/llvm/ADT/STLExtras.h
  314730        234     1345    llvm/include/llvm/InitializePasses.h
  307036        118     2602    llvm/include/llvm/ADT/APInt.h
  213049        59      3611    llvm/include/llvm/Support/MathExtras.h
  170422        47      3626    llvm/include/llvm/Support/Compiler.h
  162225        45      3605    llvm/include/llvm/ADT/Optional.h
  158319        63      2513    llvm/include/llvm/ADT/Triple.h
  140322        39      3598    llvm/include/llvm/ADT/StringRef.h
  137647        59      2333    llvm/include/llvm/Support/Error.h
  131619        73      1803    llvm/include/llvm/Support/FileSystem.h

Before this change, touching InitializePasses.h would cause 1345 files
to recompile. After this change, touching it only causes 550 compiles in
an incremental rebuild.

Reviewers: bkramer, asbirlea, bollu, jdoerfert

Differential Revision: https://reviews.llvm.org/D70211

20 files changed, 25 insertions, 2 deletions

diff --git a/llvm/lib/Transforms/Utils/AddDiscriminators.cpp b/llvm/lib/Transforms/Utils/AddDiscriminators.cpp
index ee0973002c4..d58e6eb26ff 100644
--- a/llvm/lib/Transforms/Utils/AddDiscriminators.cpp
+++ b/llvm/lib/Transforms/Utils/AddDiscriminators.cpp
@@ -63,6 +63,7 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/PassManager.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/CommandLine.h"
diff --git a/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp b/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp
index f5e4b53f6d9..008cea333e6 100644
--- a/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp
+++ b/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp
@@ -28,6 +28,7 @@
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Type.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Transforms/Utils.h"
 #include "llvm/Transforms/Utils/BasicBlockUtils.h"
diff --git a/llvm/lib/Transforms/Utils/CanonicalizeAliases.cpp b/llvm/lib/Transforms/Utils/CanonicalizeAliases.cpp
index 3c7c8d87259..6b01c0c71d0 100644
--- a/llvm/lib/Transforms/Utils/CanonicalizeAliases.cpp
+++ b/llvm/lib/Transforms/Utils/CanonicalizeAliases.cpp
@@ -30,9 +30,9 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Utils/CanonicalizeAliases.h"
-
 #include "llvm/IR/Operator.h"
 #include "llvm/IR/ValueHandle.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 
 using namespace llvm;
diff --git a/llvm/lib/Transforms/Utils/EntryExitInstrumenter.cpp b/llvm/lib/Transforms/Utils/EntryExitInstrumenter.cpp
index 57e2ff0251a..651f776a491 100644
--- a/llvm/lib/Transforms/Utils/EntryExitInstrumenter.cpp
+++ b/llvm/lib/Transforms/Utils/EntryExitInstrumenter.cpp
@@ -13,6 +13,7 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Transforms/Utils.h"
 using namespace llvm;
diff --git a/llvm/lib/Transforms/Utils/InstructionNamer.cpp b/llvm/lib/Transforms/Utils/InstructionNamer.cpp
index 6c4fc1ceb99..aac0b55801c 100644
--- a/llvm/lib/Transforms/Utils/InstructionNamer.cpp
+++ b/llvm/lib/Transforms/Utils/InstructionNamer.cpp
@@ -15,6 +15,7 @@
 
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Type.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Transforms/Utils.h"
 using namespace llvm;
diff --git a/llvm/lib/Transforms/Utils/LCSSA.cpp b/llvm/lib/Transforms/Utils/LCSSA.cpp
index b8a9ae2a498..6347d7011f6 100644
--- a/llvm/lib/Transforms/Utils/LCSSA.cpp
+++ b/llvm/lib/Transforms/Utils/LCSSA.cpp
@@ -43,6 +43,7 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/PredIteratorCache.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Transforms/Utils.h"
 #include "llvm/Transforms/Utils/Local.h"
diff --git a/llvm/lib/Transforms/Utils/LibCallsShrinkWrap.cpp b/llvm/lib/Transforms/Utils/LibCallsShrinkWrap.cpp
index ed28fffc22b..4c52fac6f7c 100644
--- a/llvm/lib/Transforms/Utils/LibCallsShrinkWrap.cpp
+++ b/llvm/lib/Transforms/Utils/LibCallsShrinkWrap.cpp
@@ -39,6 +39,7 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/MDBuilder.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Transforms/Utils/BasicBlockUtils.h"
 using namespace llvm;
diff --git a/llvm/lib/Transforms/Utils/LoopSimplify.cpp b/llvm/lib/Transforms/Utils/LoopSimplify.cpp
index d0f89dc54bf..28f88f39a71 100644
--- a/llvm/lib/Transforms/Utils/LoopSimplify.cpp
+++ b/llvm/lib/Transforms/Utils/LoopSimplify.cpp
@@ -67,6 +67,7 @@
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Transforms/Utils.h"
diff --git a/llvm/lib/Transforms/Utils/LoopUtils.cpp b/llvm/lib/Transforms/Utils/LoopUtils.cpp
index b4d7f35d2d9..68ef0fe4071 100644
--- a/llvm/lib/Transforms/Utils/LoopUtils.cpp
+++ b/llvm/lib/Transforms/Utils/LoopUtils.cpp
@@ -35,6 +35,7 @@
 #include "llvm/IR/Module.h"
 #include "llvm/IR/PatternMatch.h"
 #include "llvm/IR/ValueHandle.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/KnownBits.h"
diff --git a/llvm/lib/Transforms/Utils/LoopVersioning.cpp b/llvm/lib/Transforms/Utils/LoopVersioning.cpp
index 5d7759056c7..ada34b72b3b 100644
--- a/llvm/lib/Transforms/Utils/LoopVersioning.cpp
+++ b/llvm/lib/Transforms/Utils/LoopVersioning.cpp
@@ -18,6 +18,7 @@
 #include "llvm/Analysis/ScalarEvolutionExpander.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/MDBuilder.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Transforms/Utils/BasicBlockUtils.h"
 #include "llvm/Transforms/Utils/Cloning.h"
 
diff --git a/llvm/lib/Transforms/Utils/LowerInvoke.cpp b/llvm/lib/Transforms/Utils/LowerInvoke.cpp
index fe67e191dc6..1af0ce3d86c 100644
--- a/llvm/lib/Transforms/Utils/LowerInvoke.cpp
+++ b/llvm/lib/Transforms/Utils/LowerInvoke.cpp
@@ -19,6 +19,7 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Transforms/Utils.h"
 using namespace llvm;
diff --git a/llvm/lib/Transforms/Utils/LowerSwitch.cpp b/llvm/lib/Transforms/Utils/LowerSwitch.cpp
index 8256e3b5f5a..4b9d0dadfc1 100644
--- a/llvm/lib/Transforms/Utils/LowerSwitch.cpp
+++ b/llvm/lib/Transforms/Utils/LowerSwitch.cpp
@@ -27,6 +27,7 @@
 #include "llvm/IR/InstrTypes.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Value.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/Compiler.h"
diff --git a/llvm/lib/Transforms/Utils/Mem2Reg.cpp b/llvm/lib/Transforms/Utils/Mem2Reg.cpp
index cd2c81b6abc..5ad7aeb463e 100644
--- a/llvm/lib/Transforms/Utils/Mem2Reg.cpp
+++ b/llvm/lib/Transforms/Utils/Mem2Reg.cpp
@@ -19,6 +19,7 @@
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/PassManager.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Transforms/Utils.h"
diff --git a/llvm/lib/Transforms/Utils/MetaRenamer.cpp b/llvm/lib/Transforms/Utils/MetaRenamer.cpp
index 60bb2775a19..7f961dbaf4b 100644
--- a/llvm/lib/Transforms/Utils/MetaRenamer.cpp
+++ b/llvm/lib/Transforms/Utils/MetaRenamer.cpp
@@ -27,6 +27,7 @@
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/IR/TypeFinder.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Transforms/Utils.h"
 
diff --git a/llvm/lib/Transforms/Utils/NameAnonGlobals.cpp b/llvm/lib/Transforms/Utils/NameAnonGlobals.cpp
index ac8991e9d47..1c5c41abc68 100644
--- a/llvm/lib/Transforms/Utils/NameAnonGlobals.cpp
+++ b/llvm/lib/Transforms/Utils/NameAnonGlobals.cpp
@@ -12,9 +12,9 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Utils/NameAnonGlobals.h"
-
 #include "llvm/ADT/SmallString.h"
 #include "llvm/IR/Module.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/MD5.h"
 #include "llvm/Transforms/Utils/ModuleUtils.h"
 
diff --git a/llvm/lib/Transforms/Utils/PredicateInfo.cpp b/llvm/lib/Transforms/Utils/PredicateInfo.cpp
index 44859eafb9c..dda2867f44b 100644
--- a/llvm/lib/Transforms/Utils/PredicateInfo.cpp
+++ b/llvm/lib/Transforms/Utils/PredicateInfo.cpp
@@ -30,6 +30,7 @@
 #include "llvm/IR/Metadata.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/PatternMatch.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/DebugCounter.h"
 #include "llvm/Support/FormattedStream.h"
diff --git a/llvm/lib/Transforms/Utils/StripGCRelocates.cpp b/llvm/lib/Transforms/Utils/StripGCRelocates.cpp
index 50844cf9d1c..7880ea1c6c4 100644
--- a/llvm/lib/Transforms/Utils/StripGCRelocates.cpp
+++ b/llvm/lib/Transforms/Utils/StripGCRelocates.cpp
@@ -18,6 +18,7 @@
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Statepoint.h"
 #include "llvm/IR/Type.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/raw_ostream.h"
 
diff --git a/llvm/lib/Transforms/Utils/StripNonLineTableDebugInfo.cpp b/llvm/lib/Transforms/Utils/StripNonLineTableDebugInfo.cpp
index 97a4533fabe..21cbbfb140b 100644
--- a/llvm/lib/Transforms/Utils/StripNonLineTableDebugInfo.cpp
+++ b/llvm/lib/Transforms/Utils/StripNonLineTableDebugInfo.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/IR/DebugInfo.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Transforms/Utils.h"
 using namespace llvm;
diff --git a/llvm/lib/Transforms/Utils/SymbolRewriter.cpp b/llvm/lib/Transforms/Utils/SymbolRewriter.cpp
index 5d380dcf231..aacf81d8351 100644
--- a/llvm/lib/Transforms/Utils/SymbolRewriter.cpp
+++ b/llvm/lib/Transforms/Utils/SymbolRewriter.cpp
@@ -69,6 +69,7 @@
 #include "llvm/IR/GlobalVariable.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Value.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/CommandLine.h"
diff --git a/llvm/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp b/llvm/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
index 7f7bdf8a3d6..9af39d9a0dd 100644
--- a/llvm/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
+++ b/llvm/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
@@ -18,10 +18,16 @@
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Type.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Transforms/Utils.h"
 using namespace llvm;
 
 char UnifyFunctionExitNodes::ID = 0;
+
+UnifyFunctionExitNodes::UnifyFunctionExitNodes() : FunctionPass(ID) {
+  initializeUnifyFunctionExitNodesPass(*PassRegistry::getPassRegistry());
+}
+
 INITIALIZE_PASS(UnifyFunctionExitNodes, "mergereturn",
                 "Unify function exit nodes", false, false)