[PATCH] Enable invoking the patchpoint intrinsic

[Juergen Ributzka]

I still think not threading through ImmutableCallSite would be nicer and reduce unnecessary changes. Otherwise LGTM.

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Comment at: lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h:637-643
@@ -636,7 +636,9 @@
 
-  std::pair<SDValue, SDValue> LowerCallOperands(const CallInst &CI,
-                                                unsigned ArgIdx,
-                                                unsigned NumArgs,
-                                                SDValue Callee,
-                                                bool useVoidTy = false);
+  std::pair<SDValue, SDValue> LowerCallOperands(
+          ImmutableCallSite CS,
+          unsigned ArgIdx,
+          unsigned NumArgs,
+          SDValue Callee,
+          bool useVoidTy = false,
+          MachineBasicBlock *LandingPad = nullptr);
 
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While you are already at it, could you please clean up the sins I committed and update it to the current coding standard (camelCase for functions and CamelCase for variables)?

================
Comment at: lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h:783
@@ -780,3 +782,3 @@
   void visitStackmap(const CallInst &I);
-  void visitPatchpoint(const CallInst &I);
+  void visitPatchpoint(ImmutableCallSite CS, MachineBasicBlock *LandingPad);
 
----------------
I would add a default value for LandingPad = nullptr and not switch to ImmutableCallSite for the first argument.

http://reviews.llvm.org/D5634