[IR] Use const_cast to reuse the const version of two BasicBlock methods that are duplicated for both const and non-const. NFC

Similar is already done for other methods in BasicBlock.

llvm-svn: 292753

2 files changed, 6 insertions, 11 deletions

diff --git a/llvm/include/llvm/IR/BasicBlock.h b/llvm/include/llvm/IR/BasicBlock.h
index 93dbd573ee1..ae40e710e1e 100644
--- a/llvm/include/llvm/IR/BasicBlock.h
+++ b/llvm/include/llvm/IR/BasicBlock.h
@@ -104,13 +104,17 @@ public:
   /// or nullptr it the function does not have a module.
   ///
   /// Note: this is undefined behavior if the block does not have a parent.
-  const Module *getModule() const;
   Module *getModule();
+  const Module *getModule() const {
+    return const_cast<BasicBlock *>(this)->getModule();
+  }
 
   /// \brief Returns the terminator instruction if the block is well formed or
   /// null if the block is not well formed.
   TerminatorInst *getTerminator();
-  const TerminatorInst *getTerminator() const;
+  const TerminatorInst *getTerminator() const {
+    return const_cast<BasicBlock *>(this)->getTerminator();
+  }
 
   /// \brief Returns the call instruction calling @llvm.experimental.deoptimize
   /// prior to the terminating return instruction of this basic block, if such a
diff --git a/llvm/lib/IR/BasicBlock.cpp b/llvm/lib/IR/BasicBlock.cpp
index 19e78492365..8187ee93f17 100644
--- a/llvm/lib/IR/BasicBlock.cpp
+++ b/llvm/lib/IR/BasicBlock.cpp
@@ -113,10 +113,6 @@ void BasicBlock::moveAfter(BasicBlock *MovePos) {
       getIterator());
 }
 
-const Module *BasicBlock::getModule() const {
-  return getParent()->getParent();
-}
-
 Module *BasicBlock::getModule() {
   return getParent()->getParent();
 }
@@ -126,11 +122,6 @@ TerminatorInst *BasicBlock::getTerminator() {
   return dyn_cast<TerminatorInst>(&InstList.back());
 }
 
-const TerminatorInst *BasicBlock::getTerminator() const {
-  if (InstList.empty()) return nullptr;
-  return dyn_cast<TerminatorInst>(&InstList.back());
-}
-
 CallInst *BasicBlock::getTerminatingMustTailCall() {
   if (InstList.empty())
     return nullptr;