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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99284 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Transforms/Utils/BuildLibCalls.h b/include/llvm/Transforms/Utils/BuildLibCalls.h
index 9b76a37a85c33db6a620f0d566eb309d29940e12..d278672a1f02f27c778aeb9e22b4a10d66f9e297 100644 (file)
--- a/include/llvm/Transforms/Utils/BuildLibCalls.h
+++ b/include/llvm/Transforms/Utils/BuildLibCalls.h
@@ -49,6 +49,9 @@ namespace llvm {
   Value *EmitMemCpy(Value *Dst, Value *Src, Value *Len,
                     unsigned Align, IRBuilder<> &B, const TargetData *TD);
 
+  /// EmitMemCpyChk - Emit a call to the __memcpy_chk function to the builder.
+  /// This expects that the Len and ObjSize have type 'intptr_t' and Dst/Src
+  /// are pointers.
   Value *EmitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize,
                        IRBuilder<> &B, const TargetData *TD);