[TMP]

Author: chengcang.yang

llvm/lib/Transforms/Scalar/SeparateConstOffsetFromGEP.cpp

@@ -456,6 +456,8 @@ class SeparateConstOffsetFromGEP {
   /// A helper that reunites sexts in an instruction.
   bool reuniteExts(Instruction *I);
 
+  bool sinkGEPConstantOffset(Function &F);
+
   /// Find the closest dominator of <Dominatee> that is equivalent to <Key>.
   Instruction *findClosestMatchingDominator(
       ExprKey Key, Instruction *Dominatee,
@@ -1255,6 +1257,8 @@ bool SeparateConstOffsetFromGEP::run(Function &F) {
 
   Changed |= reuniteExts(F);
 
+  Changed |= sinkGEPConstantOffset(F);
+
   if (VerifyNoDeadCode)
     verifyNoDeadCode(F);
 
@@ -1344,6 +1348,17 @@ bool SeparateConstOffsetFromGEP::reuniteExts(Function &F) {
   return Changed;
 }
 
+bool SeparateConstOffsetFromGEP::sinkGEPConstantOffset(Function &F) {
+  bool Changed = false;
+  for (BasicBlock &B : F) {
+    for (Instruction &I : B) {
+
+    }
+  }
+
+  return Changed;
+}
+
 void SeparateConstOffsetFromGEP::verifyNoDeadCode(Function &F) {
   for (BasicBlock &B : F) {
     for (Instruction &I : B) {