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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/doc/md.texi | 4 |
2 files changed, 8 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 21d0805..3630a10 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-11-13 Eric Botcazou <ebotcazou@libertysurf.fr> + + * doc/md.texi (constraints) <% modifier>: Mention that it is + useless when the two alternatives are strictly identical. + 2004-11-13 Richard Henderson <rth@redhat.com> * expmed.c (extract_split_bit_field): Temporarily disable call to diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index adf9fe5..9d7771c 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 # |