[SCCP] Remove redundant instruction visitors.

Whenever we don't know what to do with an instruction, we send
it to overdefined anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305575 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp
index 815492ac354c0fed1f4937c9431f2ad8aca8498c..c6929c33b3e9ea7dcac94fa88415fe17f6d2ab94 100644 (file)
--- a/lib/Transforms/Scalar/SCCP.cpp
+++ b/lib/Transforms/Scalar/SCCP.cpp
@@ -515,10 +515,6 @@ private:
   void visitCmpInst(CmpInst &I);
   void visitExtractValueInst(ExtractValueInst &EVI);
   void visitInsertValueInst(InsertValueInst &IVI);
-  void visitLandingPadInst(LandingPadInst &I) { markOverdefined(&I); }
-  void visitFuncletPadInst(FuncletPadInst &FPI) {
-    markOverdefined(&FPI);
-  }
   void visitCatchSwitchInst(CatchSwitchInst &CPI) {
     markOverdefined(&CPI);
     visitTerminatorInst(CPI);
@@ -539,13 +535,6 @@ private:
   void visitResumeInst    (TerminatorInst &I) { /*returns void*/ }
   void visitUnreachableInst(TerminatorInst &I) { /*returns void*/ }
   void visitFenceInst     (FenceInst &I) { /*returns void*/ }
-  void visitAtomicCmpXchgInst(AtomicCmpXchgInst &I) {
-    markOverdefined(&I);
-  }
-  void visitAtomicRMWInst (AtomicRMWInst &I) { markOverdefined(&I); }
-  void visitAllocaInst    (Instruction &I) { markOverdefined(&I); }
-  void visitVAArgInst     (Instruction &I) { markOverdefined(&I); }
-
   void visitInstruction(Instruction &I) {
     // If a new instruction is added to LLVM that we don't handle.
     DEBUG(dbgs() << "SCCP: Don't know how to handle: " << I << '\n');