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Diffstat (limited to 'gcc/doc/md.texi')
| -rw-r--r-- | gcc/doc/md.texi | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index 28159b2..aba93f6 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -1366,6 +1366,12 @@ as for @samp{<} apply. A register operand is allowed provided that it is in a general register. +@cindex hard registers in constraint +@item @samp{@{r@}} +An operand is bound to hard register @samp{r} which may be any general, +floating-point, or vector register except a fixed register like a stack pointer +register. The set of fixed registers is target dependent. + @cindex constants in constraints @cindex @samp{i} in constraint @item @samp{i} |