commit 4afc509b7ffe2c4ea234dfd7af5105feb21685d9
author David Greene <greened@obbligato.org> Thu May 14 21:54:42 2009 +0000
committer David Greene <greened@obbligato.org> Thu May 14 21:54:42 2009 +0000
tree e095d38947400d6afe3a6885a236a45e8cc3955a
parent 94555c28462aab05157b41d78505d5753bd97dad

Implement a !subst operation simmilar to $(subst) in GNU make to do
def/var/string substitution on generic pattern templates.  For example:

def Type;
def v4f32 : Type;
def TYPE : Type;

class GenType<Type t> {
  let type = !(subst TYPE, v4f32, t);
}

def TheType : GenType<TYPE>;


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71801 91177308-0d34-0410-b5e6-96231b3b80d8

docs/TableGenFundamentals.html

diff --git a/docs/TableGenFundamentals.html b/docs/TableGenFundamentals.html
index 48fdd2a..0186453 100644
--- a/docs/TableGenFundamentals.html
+++ b/docs/TableGenFundamentals.html
@@ -404,6 +404,9 @@
 aborts with an error. </dd>
 <dt><tt>!nameconcat&lt;type&gt;(a, b)</tt></dt>
   <dd>Shorthand for !cast<type>(!strconcat(a, b))</dd>
+<dt><tt>!subst(a, b, c)</tt></dt>
+  <dd>If 'a' and 'b' are of string type or are symbol references, substitute 
+'b' for 'a' in 'c.'  This operation is analogous to $(subst) in GNU make.</dd>
 </dl>
 
 <p>Note that all of the values have rules specifying how they convert to values