Add Instruction::getFunction; NFC

Will be used in a upcoming patch.

llvm-svn: 254975

2 files changed, 12 insertions, 0 deletions

diff --git a/llvm/include/llvm/IR/Instruction.h b/llvm/include/llvm/IR/Instruction.h
index c7ba8721fe0..77ba87c6b66 100644
--- a/llvm/include/llvm/IR/Instruction.h
+++ b/llvm/include/llvm/IR/Instruction.h
@@ -66,6 +66,13 @@ public:
   const Module *getModule() const;
   Module *getModule();
 
+  /// \brief Return the function this instruction belongs to.
+  ///
+  /// Note: it is undefined behavior to call this on an instruction not
+  /// currently inserted into a function.
+  const Function *getFunction() const;
+  Function *getFunction();
+
   /// removeFromParent - This method unlinks 'this' from the containing basic
   /// block, but does not delete it.
   ///
diff --git a/llvm/lib/IR/Instruction.cpp b/llvm/lib/IR/Instruction.cpp
index b5a30a4969b..7bd50328b12 100644
--- a/llvm/lib/IR/Instruction.cpp
+++ b/llvm/lib/IR/Instruction.cpp
@@ -62,6 +62,11 @@ Module *Instruction::getModule() {
   return getParent()->getModule();
 }
 
+Function *Instruction::getFunction() { return getParent()->getParent(); }
+
+const Function *Instruction::getFunction() const {
+  return getParent()->getParent();
+}
 
 void Instruction::removeFromParent() {
   getParent()->getInstList().remove(getIterator());