[TableGen] Correct the documentation for 'foreach' in the Language Intro.

[oota-llvm.git] / docs / TableGen / LangIntro.rst

diff --git a/docs/TableGen/LangIntro.rst b/docs/TableGen/LangIntro.rst
index 3e74dffb00e23a63bbd67a7e3c99d70247410333..4d4551e8a6e74c6981b1b3702fb76933e75e8f11 100644 (file)
--- a/docs/TableGen/LangIntro.rst
+++ b/docs/TableGen/LangIntro.rst
@@ -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
@@ -187,7 +190,7 @@ supported include:
     for 'a' in 'c.'  This operation is analogous to $(subst) in GNU make.
 
 ``!foreach(a, b, c)``
-    For each member 'b' of dag or list 'a' apply operator 'c.'  'b' is a dummy
+    For each member of dag or list 'b' apply operator 'c.'  'a' is a dummy
     variable that should be declared as a member variable of an instantiated
     class.  This operation is analogous to $(foreach) in GNU make.
 
@@ -208,6 +211,9 @@ supported include:
     on string, int and bit objects.  Use !cast<string> to compare other types of
     objects.
 
+``!shl(a,b)`` ``!srl(a,b)`` ``!sra(a,b)`` ``!add(a,b)`` ``!and(a,b)``
+    The usual binary and arithmetic operators.
+
 Note that all of the values have rules specifying how they convert to values
 for different types.  These rules allow you to assign a value like "``7``"
 to a "``bits<4>``" value, for example.