[llvm] r215088 - Update Tablegen documents given that binary literals are now sized

[Pete Cooper]

Author: pete
Date: Thu Aug  7 00:47:13 2014
New Revision: 215088

URL: http://llvm.org/viewvc/llvm-project?rev=215088&view=rev
Log:
Update Tablegen documents given that binary literals are now sized

Modified:
    llvm/trunk/docs/TableGen/LangIntro.rst
    llvm/trunk/docs/TableGen/LangRef.rst

Modified: llvm/trunk/docs/TableGen/LangIntro.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/TableGen/LangIntro.rst?rev=215088&r1=215087&r2=215088&view=diff
==============================================================================
--- llvm/trunk/docs/TableGen/LangIntro.rst (original)
+++ llvm/trunk/docs/TableGen/LangIntro.rst Thu Aug  7 00:47:13 2014
@@ -94,7 +94,9 @@ supported include:
     uninitialized field
 
 ``0b1001011``
-    binary integer value
+    binary integer value.
+    Note that this is sized by the number of bits given and will not be
+    silently extended/truncated.
 
 ``07654321``
     octal integer value (indicated by a leading 0)
@@ -116,8 +118,9 @@ supported include:
     In rare cases, TableGen is unable to deduce the element type in which case
     the user must specify it explicitly.
 
-``{ a, b, c }``
-    initializer for a "bits<3>" value
+``{ a, b, 0b10 }``
+    initializer for a "bits<4>" value.
+    1-bit from "a", 1-bit from "b", 2-bits from 0b10.
 
 ``value``
     value reference

Modified: llvm/trunk/docs/TableGen/LangRef.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/TableGen/LangRef.rst?rev=215088&r1=215087&r2=215088&view=diff
==============================================================================
--- llvm/trunk/docs/TableGen/LangRef.rst (original)
+++ llvm/trunk/docs/TableGen/LangRef.rst Thu Aug  7 00:47:13 2014
@@ -55,6 +55,10 @@ One aspect to note is that the :token:`D
 ``+`` or ``-``, as opposed to having ``+`` and ``-`` be unary operators as
 most languages do.
 
+Also note that :token:`BinInteger` creates a value of type ``bits<n>``
+(where ``n`` is the number of bits).  This will implicitly convert to
+integers when needed.
+
 TableGen has identifier-like tokens:
 
 .. productionlist::