Update of 94055 to track the IR level call site information via an intrinsic.

This allows code gen and the exception table writer to cooperate to make sure
landing pads are associated with the correct invoke locations.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94726 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 5 deletions

diff --git a/lib/CodeGen/SjLjEHPrepare.cpp b/lib/CodeGen/SjLjEHPrepare.cpp
index 9558933..8d4d1b2 100644
--- a/lib/CodeGen/SjLjEHPrepare.cpp
+++ b/lib/CodeGen/SjLjEHPrepare.cpp
@@ -51,6 +51,7 @@ namespace {
     Value *PersonalityFn;
     Constant *SelectorFn;
     Constant *ExceptionFn;
+    Constant *CallSiteFn;
 
     Value *CallSite;
   public:
@@ -116,6 +117,7 @@ bool SjLjEHPass::doInitialization(Module &M) {
   LSDAAddrFn = Intrinsic::getDeclaration(&M, Intrinsic::eh_sjlj_lsda);
   SelectorFn = Intrinsic::getDeclaration(&M, Intrinsic::eh_selector);
   ExceptionFn = Intrinsic::getDeclaration(&M, Intrinsic::eh_exception);
+  CallSiteFn = Intrinsic::getDeclaration(&M, Intrinsic::eh_sjlj_callsite);
   PersonalityFn = 0;
 
   return true;
@@ -143,15 +145,14 @@ void SjLjEHPass::markInvokeCallSite(InvokeInst *II, unsigned InvokeNo,
     }
   }
 
-  // Insert a store of the invoke num before the invoke and store zero into the
-  // location afterward.
+  // Insert a store of the invoke num before the invoke
   new StoreInst(CallSiteNoC, CallSite, true, II);  // volatile
+  CallInst::Create(CallSiteFn, CallSiteNoC, "", II);
 
   // Add a switch case to our unwind block.
   CatchSwitch->addCase(SwitchValC, II->getUnwindDest());
-  // We still want this to look like an invoke so we emit the LSDA properly
-  // FIXME: ??? Or will this cause strangeness with mis-matched IDs like
-  //  when it was in the front end?
+  // We still want this to look like an invoke so we emit the LSDA properly,
+  // so we don't transform the invoke into a call here.
 }
 
 /// MarkBlocksLiveIn - Insert BB and all of its predescessors into LiveBBs until