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authorGeoffrey Keating <geoffk@redhat.com>2001-07-01 23:21:11 +0000
committerGeoffrey Keating <geoffk@gcc.gnu.org>2001-07-01 23:21:11 +0000
commit1cc5e432405e37e645baae60e725f93b048d19e7 (patch)
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tm.texi (FUNCTION_ARG): Document that the last call is special.
* doc/tm.texi (FUNCTION_ARG): Document that the last call is special. From-SVN: r43681
Diffstat (limited to 'gcc/doc')
-rw-r--r--gcc/doc/tm.texi4
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index 236b98d..89cd142 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -3215,6 +3215,10 @@ As a special exception the first @code{expr_list} in the @code{parallel}
RTX may have a first operand of zero. This indicates that the entire
argument is also stored on the stack.
+The last time this macro is called, it is called with @code{MODE ==
+VOIDmode}, and its result is passed to the @code{call} or @code{call_value}
+pattern as operands 2 and 3 respectively.
+
@cindex @file{stdarg.h} and register arguments
The usual way to make the ISO library @file{stdarg.h} work on a machine
where some arguments are usually passed in registers, is to cause