Make TargetPassConfig an ImmutablePass so CodeGenPasses can query options

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149752 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 11 insertions, 2 deletions

diff --git a/include/llvm/CodeGen/Passes.h b/include/llvm/CodeGen/Passes.h
index 627568a..308026d 100644
--- a/include/llvm/CodeGen/Passes.h
+++ b/include/llvm/CodeGen/Passes.h
@@ -15,6 +15,7 @@
 #ifndef LLVM_CODEGEN_PASSES_H
 #define LLVM_CODEGEN_PASSES_H
 
+#include "llvm/Pass.h"
 #include "llvm/Target/TargetMachine.h"
 #include <string>
 
@@ -32,9 +33,12 @@ namespace llvm {
 
 /// Target-Independent Code Generator Pass Configuration Options.
 ///
+/// This is an ImmutablePass solely for the purpose of exposing CodeGen options
+/// to the internals of other CodeGen passes.
+///
 /// FIXME: Why are we passing the DisableVerify flags around instead of setting
 /// an options in the target machine, like all the other driver options?
-class TargetPassConfig {
+class TargetPassConfig : public ImmutablePass {
 protected:
   TargetMachine *TM;
   PassManagerBase &PM;
@@ -43,8 +47,12 @@ protected:
 public:
   TargetPassConfig(TargetMachine *tm, PassManagerBase &pm,
                    bool DisableVerifyFlag);
+  // Dummy constructor.
+  TargetPassConfig();
+
+  virtual ~TargetPassConfig();
 
-  virtual ~TargetPassConfig() {}
+  static char ID;
 
   /// Get the right type of TargetMachine for this target.
   template<typename TMC> TMC &getTM() const {
diff --git a/include/llvm/InitializePasses.h b/include/llvm/InitializePasses.h
index ac129c7..c1940d6 100644
--- a/include/llvm/InitializePasses.h
+++ b/include/llvm/InitializePasses.h
@@ -228,6 +228,7 @@ void initializeStripNonDebugSymbolsPass(PassRegistry&);
 void initializeStripSymbolsPass(PassRegistry&);
 void initializeStrongPHIEliminationPass(PassRegistry&);
 void initializeTailCallElimPass(PassRegistry&);
+void initializeTargetPassConfigPass(PassRegistry&);
 void initializeTargetDataPass(PassRegistry&);
 void initializeTargetLibraryInfoPass(PassRegistry&);
 void initializeTwoAddressInstructionPassPass(PassRegistry&);