Clarify that an alignment of 0 or 1 on a mem* intrinsic means 'no alignment'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193012 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/LangRef.rst b/docs/LangRef.rst
index 1ca60d8daf0e6efb0e73f9ebfc5c36430de4f23b..2449e0175208d6dc5eb0f7835c2d7f63168199f2 100644 (file)
--- a/docs/LangRef.rst
+++ b/docs/LangRef.rst
@@ -6874,7 +6874,7 @@ The '``llvm.memcpy.*``' intrinsics copy a block of memory from the
 source location to the destination location, which are not allowed to
 overlap. It copies "len" bytes of memory over. If the argument is known
 to be aligned to some boundary, this can be specified as the fourth
-argument, otherwise it should be set to 0 or 1.
+argument, otherwise it should be set to 0 or 1 (both meaning no alignment).
 
 '``llvm.memmove``' Intrinsic
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -6929,7 +6929,7 @@ The '``llvm.memmove.*``' intrinsics copy a block of memory from the
 source location to the destination location, which may overlap. It
 copies "len" bytes of memory over. If the argument is known to be
 aligned to some boundary, this can be specified as the fourth argument,
-otherwise it should be set to 0 or 1.
+otherwise it should be set to 0 or 1 (both meaning no alignment).
 
 '``llvm.memset.*``' Intrinsics
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -6980,7 +6980,7 @@ Semantics:
 The '``llvm.memset.*``' intrinsics fill "len" bytes of memory starting
 at the destination location. If the argument is known to be aligned to
 some boundary, this can be specified as the fourth argument, otherwise
-it should be set to 0 or 1.
+it should be set to 0 or 1 (both meaning no alignment).
 
 '``llvm.sqrt.*``' Intrinsic
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^