Move GlobalMerge from Transform to CodeGen.

This patch is to move GlobalMerge pass from Transform/Scalar                                                           
to CodeGen, because GlobalMerge depends on TargetMachine.
In the mean time, the macro INITIALIZE_TM_PASS is also moved
to CodeGen/Passes.h. With this fix we can avoid making
libScalarOpts depend on libCodeGen.

llvm-svn: 210951

2 files changed, 17 insertions, 12 deletions

diff --git a/llvm/include/llvm/CodeGen/Passes.h b/llvm/include/llvm/CodeGen/Passes.h
index bf31de78b40..17477fe6b05 100644
--- a/llvm/include/llvm/CodeGen/Passes.h
+++ b/llvm/include/llvm/CodeGen/Passes.h
@@ -592,4 +592,21 @@ namespace llvm {
   ModulePass *createJumpInstrTablesPass();
 } // End llvm namespace
 
+/// This initializer registers TargetMachine constructor, so the pass being
+/// initialized can use target dependent interfaces. Please do not move this
+/// macro to be together with INITIALIZE_PASS, which is a complete target
+/// independent initializer, and we don't want to make libScalarOpts depend
+/// on libCodeGen.
+#define INITIALIZE_TM_PASS(passName, arg, name, cfg, analysis) \
+  static void* initialize##passName##PassOnce(PassRegistry &Registry) { \
+    PassInfo *PI = new PassInfo(name, arg, & passName ::ID, \
+      PassInfo::NormalCtor_t(callDefaultCtor< passName >), cfg, analysis, \
+      PassInfo::TargetMachineCtor_t(callTargetMachineCtor< passName >)); \
+    Registry.registerPass(*PI, true); \
+    return PI; \
+  } \
+  void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
+    CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
+  }
+
 #endif
diff --git a/llvm/include/llvm/PassSupport.h b/llvm/include/llvm/PassSupport.h
index a4ef09d679a..449bc928108 100644
--- a/llvm/include/llvm/PassSupport.h
+++ b/llvm/include/llvm/PassSupport.h
@@ -53,18 +53,6 @@ class TargetMachine;
   } \
   TsanHappensAfter(&initialized);
 
-#define INITIALIZE_TM_PASS(passName, arg, name, cfg, analysis) \
-  static void* initialize##passName##PassOnce(PassRegistry &Registry) { \
-    PassInfo *PI = new PassInfo(name, arg, & passName ::ID, \
-      PassInfo::NormalCtor_t(callDefaultCtor< passName >), cfg, analysis, \
-      PassInfo::TargetMachineCtor_t(callTargetMachineCtor< passName >)); \
-    Registry.registerPass(*PI, true); \
-    return PI; \
-  } \
-  void llvm::initialize##passName##Pass(PassRegistry &Registry) { \
-    CALL_ONCE_INITIALIZATION(initialize##passName##PassOnce) \
-  }
-
 #define INITIALIZE_PASS(passName, arg, name, cfg, analysis) \
   static void* initialize##passName##PassOnce(PassRegistry &Registry) { \
     PassInfo *PI = new PassInfo(name, arg, & passName ::ID, \