[PATCH, PR 57195] Allow mode iterators inside angle brackets

[Michael Collison <michael dot collison at linaro dot org>]

This patch allow mode iterators inside angle brackets in machine 
description files. I
discovered the issue when attempting to use iterators on match_operand's 
as follows:

match_operand:<VW:V_widen> 0 "s_register_operand" "=w")

The function 'read_name' is nor properly handling ':' inside angle brackets.

Bootstrapped on arm-linux.

OK for trunk?

2015-08-25  Michael Collison  <michael.collison@linaro.org>

    PR other/57195
    * read-md.c (read_name): Allow mode iterators inside angle
    brackets in rtl expressions.

diff --git a/gcc/read-md.c b/gcc/read-md.c
index 9f158ec..0171fb0 100644
--- a/gcc/read-md.c
+++ b/gcc/read-md.c
@@ -399,17 +399,25 @@ read_name (struct md_name *name)
 {
   int c;
   size_t i;
+  bool in_angle_bracket;

   c = read_skip_spaces ();

   i = 0;
+  in_angle_bracket = false;
   while (1)
     {
+      if (c == '<')
+    in_angle_bracket = true;
+
+      if (c == '>')
+    in_angle_bracket = false;
+
       if (c == ' ' || c == '\n' || c == '\t' || c == '\f' || c == '\r'
       || c == EOF)
     break;
-      if (c == ':' || c == ')' || c == ']' || c == '"' || c == '/'
-      || c == '(' || c == '[')
+      if (((c == ':') and (!in_angle_bracket)) || c == ')' || c == ']'
+      || c == '"' || c == '/' || c == '(' || c == '[')
     {
       unread_char (c);
       break;

--
Michael Collison
Linaro Toolchain Working Group
michael.collison@linaro.org