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| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/doc/rtl.texi | 4 |
2 files changed, 8 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index fb9e011..9d66238 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2002-04-05 Richard Henderson <rth@redhat.com> + + * doc/rtl.texi (Regs and Memory): Document (mem:BLK (scratch)). + 2002-04-05 Jakub Jeilnek <jakub@redhat.com> * mklibgcc.in: Use $tmpmapfile, not tmp-$@. diff --git a/gcc/doc/rtl.texi b/gcc/doc/rtl.texi index 10c81e4..efe3647 100644 --- a/gcc/doc/rtl.texi +++ b/gcc/doc/rtl.texi @@ -1558,6 +1558,10 @@ a unit of memory is accessed. @var{alias} specifies an alias set for the reference. In general two items are in different alias sets if they cannot reference the same memory address. +The construct @code{(mem:BLK (scratch))} is considered to alias all +other memories. Thus it may be used as a memory barrier in epilogue +stack deallocation patterns. + @findex addressof @item (addressof:@var{m} @var{reg}) This RTX represents a request for the address of register @var{reg}. Its mode |