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Diffstat (limited to 'gcc/doc/md.texi')
| -rw-r--r-- | gcc/doc/md.texi | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index a8e43ead2fd..ee8021c7d59 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -1085,6 +1085,8 @@ number of constraints and modifiers. @item @samp{m} A memory operand is allowed, with any kind of address that the machine supports in general. +Note that the letter used for the general memory constraint can be +re-defined by a back end using the @code{TARGET_MEM_CONSTRAINT} macro. @cindex offsettable address @cindex @samp{o} in constraint |