Reapply r77654 with a fix: MachineFunctionPass's getAnalysisUsage

shouldn't do AU.setPreservesCFG(), because even though CodeGen passes
don't modify the LLVM IR CFG, they may modify the MachineFunction CFG,
and passes like MachineLoop are registered with isCFGOnly set to true.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77691 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 2 deletions

diff --git a/include/llvm/CodeGen/SelectionDAGISel.h b/include/llvm/CodeGen/SelectionDAGISel.h
index d2c0dc4..51f90ac 100644
--- a/include/llvm/CodeGen/SelectionDAGISel.h
+++ b/include/llvm/CodeGen/SelectionDAGISel.h
@@ -19,6 +19,7 @@
 #include "llvm/Pass.h"
 #include "llvm/Constant.h"
 #include "llvm/CodeGen/SelectionDAG.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
 
 namespace llvm {
   class FastISel;
@@ -39,7 +40,7 @@ namespace llvm {
  
 /// SelectionDAGISel - This is the common base class used for SelectionDAG-based
 /// pattern-matching instruction selectors.
-class SelectionDAGISel : public FunctionPass {
+class SelectionDAGISel : public MachineFunctionPass {
 public:
   const TargetMachine &TM;
   TargetLowering &TLI;
@@ -62,7 +63,7 @@ public:
 
   virtual void getAnalysisUsage(AnalysisUsage &AU) const;
 
-  virtual bool runOnFunction(Function &Fn);
+  virtual bool runOnMachineFunction(MachineFunction &MF);
 
   unsigned MakeReg(MVT VT);