For PR950: Implement a stub for folding ICmp and FCmp instructions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32169 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 11 insertions, 0 deletions

diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp
index ef929d7315..b15c472459 100644
--- a/lib/VMCore/ConstantFold.cpp
+++ b/lib/VMCore/ConstantFold.cpp
@@ -1600,6 +1600,13 @@ Constant *llvm::ConstantFoldBinaryInstruction(unsigned Opcode,
   return 0;
 }
 
+Constant *llvm::ConstantFoldCompare(
+    unsigned opcode, Constant *C1, Constant  *C2, unsigned short predicate)
+{
+  // Place holder for future folding of ICmp and FCmp instructions
+  return 0;
+}
+
 Constant *llvm::ConstantFoldGetElementPtr(const Constant *C,
                                           const std::vector<Value*> &IdxList) {
   if (IdxList.size() == 0 ||
diff --git a/lib/VMCore/ConstantFold.h b/lib/VMCore/ConstantFold.h
index 2824979cf4..ee3c64cc59 100644
--- a/lib/VMCore/ConstantFold.h
+++ b/lib/VMCore/ConstantFold.h
@@ -45,6 +45,8 @@ namespace llvm {
                                                  const Constant *Mask);
   Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
                                           const Constant *V2);
+  Constant *ConstantFoldCompare(unsigned opcode, Constant *C1, Constant  *C2, 
+                                unsigned short predicate);
   Constant *ConstantFoldGetElementPtr(const Constant *C,
                                       const std::vector<Value*> &IdxList);
 } // End llvm namespace
diff --git a/lib/VMCore/ConstantFolding.h b/lib/VMCore/ConstantFolding.h
index 2824979cf4..ee3c64cc59 100644
--- a/lib/VMCore/ConstantFolding.h
+++ b/lib/VMCore/ConstantFolding.h
@@ -45,6 +45,8 @@ namespace llvm {
                                                  const Constant *Mask);
   Constant *ConstantFoldBinaryInstruction(unsigned Opcode, const Constant *V1,
                                           const Constant *V2);
+  Constant *ConstantFoldCompare(unsigned opcode, Constant *C1, Constant  *C2, 
+                                unsigned short predicate);
   Constant *ConstantFoldGetElementPtr(const Constant *C,
                                       const std::vector<Value*> &IdxList);
 } // End llvm namespace