From 4d62c4d90abfe211a2bfec28682a146d3162dfb3 Mon Sep 17 00:00:00 2001 From: ebotcazou Date: Sat, 13 Nov 2004 22:28:46 +0000 Subject: [PATCH] * doc/md.texi (constraints) <% modifier>: Mention that it is useless when the two alternatives are strictly identical. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@90598 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 5 +++++ gcc/doc/md.texi | 4 +++- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 21d08056ee1..3630a10d720 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-11-13 Eric Botcazou + + * doc/md.texi (constraints) <% modifier>: Mention that it is + useless when the two alternatives are strictly identical. + 2004-11-13 Richard Henderson * expmed.c (extract_split_bit_field): Temporarily disable call to diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index adf9fe5d195..9d7771c2770 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -1550,7 +1550,9 @@ instruction is defined: @end smallexample @end ifset GCC can only handle one commutative pair in an asm; if you use more, -the compiler may fail. +the compiler may fail. Note that you need not use the modifier if +the two alternatives are strictly identical; this would only waste +time in the reload pass. @cindex @samp{#} in constraint @item # -- 2.11.0