Note ImmArg in documentation for adding intrinsics
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356145 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ExtendingLLVM.rst b/docs/ExtendingLLVM.rst
index 389dfad..53daf5c 100644
--- a/docs/ExtendingLLVM.rst
+++ b/docs/ExtendingLLVM.rst
@@ -47,11 +47,13 @@
#. ``llvm/include/llvm/IR/Intrinsics*.td``:
- Add an entry for your intrinsic. Describe its memory access characteristics
- for optimization (this controls whether it will be DCE'd, CSE'd, etc). Note
- that any intrinsic using one of the ``llvm_any*_ty`` types for an argument or
- return type will be deemed by ``tblgen`` as overloaded and the corresponding
- suffix will be required on the intrinsic's name.
+ Add an entry for your intrinsic. Describe its memory access
+ characteristics for optimization (this controls whether it will be
+ DCE'd, CSE'd, etc). If any arguments need to be immediates, these
+ must be indicated with the ImmArg property. Note that any intrinsic
+ using one of the ``llvm_any*_ty`` types for an argument or return
+ type will be deemed by ``tblgen`` as overloaded and the
+ corresponding suffix will be required on the intrinsic's name.
#. ``llvm/lib/Analysis/ConstantFolding.cpp``:
