From f467dc969cb40a9c7325a55f412c66d19d5195fe Mon Sep 17 00:00:00 2001 From: Alex Bradbury Date: Tue, 2 May 2017 13:47:10 +0000 Subject: [PATCH] Improvements to TableGen/LangIntro.rst Document the 'code' data type, and that value{15-17} is different to value{17-15}. Patch by @chenwj (Wei-Ren Chen). Differential Revision: https://reviews.llvm.org/D32117 llvm-svn: 301920 --- docs/TableGen/LangIntro.rst | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/docs/TableGen/LangIntro.rst b/docs/TableGen/LangIntro.rst index d8bd17d750b..460ff9067f2 100644 --- a/docs/TableGen/LangIntro.rst +++ b/docs/TableGen/LangIntro.rst @@ -58,6 +58,10 @@ types are: The 'string' type represents an ordered sequence of characters of arbitrary length. +``code`` + The `code` type represents a code fragment, which can be single/multi-line + string literal. + ``bits`` A 'bits' type is an arbitrary, but fixed, size integer that is broken up into individual bits. This type is useful because it can handle some bits @@ -105,7 +109,7 @@ supported include: hexadecimal integer value ``"foo"`` - string value + a single-line string value, can be assigned to ``string`` or ``code`` variable. ``[{ ... }]`` usually called a "code fragment", but is just a multiline string literal @@ -126,7 +130,8 @@ supported include: access to one bit of a value ``value{15-17}`` - access to multiple bits of a value + access to an ordered sequence of bits of a value, in particular ``value{15-17}`` + produces an order that is the reverse of ``value{17-15}``. ``DEF`` reference to a record definition