Enabling the target-independent garbage collection infrastructure by hooking it

up to the various compiler pipelines.

This doesn't actually add support for any GC algorithms, which means it 
temporarily breaks a few tests. To be fixed shortly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45669 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 19 insertions, 0 deletions

diff --git a/lib/CodeGen/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter.cpp
index b3643129d9..bb66bd2ad5 100644
--- a/lib/CodeGen/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter.cpp
@@ -16,6 +16,8 @@
 #include "llvm/DerivedTypes.h"
 #include "llvm/Constants.h"
 #include "llvm/Module.h"
+#include "llvm/CodeGen/Collector.h"
+#include "llvm/CodeGen/CollectorMetadata.h"
 #include "llvm/CodeGen/MachineConstantPool.h"
 #include "llvm/CodeGen/MachineJumpTableInfo.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
@@ -94,9 +96,20 @@ void AsmPrinter::SwitchToDataSection(const char *NewSection,
 }
 
 
+void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const {
+  MachineFunctionPass::getAnalysisUsage(AU);
+  AU.addRequired<CollectorModuleMetadata>();
+}
+
 bool AsmPrinter::doInitialization(Module &M) {
   Mang = new Mangler(M, TAI->getGlobalPrefix());
   
+  CollectorModuleMetadata *CMM = getAnalysisToUpdate<CollectorModuleMetadata>();
+  assert(CMM && "AsmPrinter didn't require CollectorModuleMetadata?");
+  for (CollectorModuleMetadata::iterator I = CMM->begin(),
+                                         E = CMM->end(); I != E; ++I)
+    (*I)->beginAssembly(O, *this, *TAI);
+  
   if (!M.getModuleInlineAsm().empty())
     O << TAI->getCommentString() << " Start of file scope inline assembly\n"
       << M.getModuleInlineAsm()
@@ -158,6 +171,12 @@ bool AsmPrinter::doFinalization(Module &M) {
     }
   }
 
+  CollectorModuleMetadata *CMM = getAnalysisToUpdate<CollectorModuleMetadata>();
+  assert(CMM && "AsmPrinter didn't require CollectorModuleMetadata?");
+  for (CollectorModuleMetadata::iterator I = CMM->end(),
+                                         E = CMM->begin(); I != E; )
+    (*--I)->finishAssembly(O, *this, *TAI);
+
   delete Mang; Mang = 0;
   return false;
 }