Revert "IR: add optional type to 'byval' function parameters"

The IRLinker doesn't delve into the new byval attribute when mapping types, and
this breaks LTO.

llvm-svn: 362029

1 files changed, 1 insertions, 4 deletions

diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
index 2105ce9d669..840272df33f 100644
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -1017,7 +1017,7 @@ Currently, only the following parameter attributes are defined:
     opposed to memory, though some targets use it to distinguish between
     two different kinds of registers). Use of this attribute is
     target-specific.
-``byval`` or ``byval(<ty>)``
+``byval``
     This indicates that the pointer parameter should really be passed by
     value to the function. The attribute implies that a hidden copy of
     the pointee is made between the caller and the callee, so the callee
@@ -1029,9 +1029,6 @@ Currently, only the following parameter attributes are defined:
     ``byval`` parameters). This is not a valid attribute for return
     values.
 
-    The byval attribute also supports an optional type argument, which must be
-    the same as the pointee type of the argument.
-
     The byval attribute also supports specifying an alignment with the
     align attribute. It indicates the alignment of the stack slot to
     form and the known alignment of the pointer specified to the call