Add description of function attribute 'minsize' in LangRef.rst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188091 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LangRef.rst b/docs/LangRef.rst
index 5b8ecd8..a8feb12 100644
--- a/docs/LangRef.rst
+++ b/docs/LangRef.rst
@@ -833,6 +833,11 @@
inlining this function is desirable (such as the "inline" keyword in
C/C++). It is just a hint; it imposes no requirements on the
inliner.
+``minsize``
+ This attribute suggests that optimization passes and code generator
+ passes make choices that keep the code size of this function as small
+ as possible and perform optimizations that may sacrifice runtime
+ performance in order to minimize the size of the generated code.
``naked``
This attribute disables prologue / epilogue emission for the
function. This can have very system-specific consequences.
@@ -877,7 +882,8 @@
``optsize``
This attribute suggests that optimization passes and code generator
passes make choices that keep the code size of this function low,
- and otherwise do optimizations specifically to reduce code size.
+ and otherwise do optimizations specifically to reduce code size as
+ long as they do not significantly impact runtime performance.
``readnone``
On a function, this attribute indicates that the function computes its
result (or decides to unwind an exception) based strictly on its arguments,