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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-04-06 01:14:42 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-04-06 01:14:42 +0000 |
| commit | 3986e66fe0d4821d41141e5f906cc0c5ffbc25d5 (patch) | |
| tree | 1351f76f10712ca1fc9f4a103557a14a09021b0a /gcc | |
| parent | d8beeb3f75bc4a25217e82a4fb0246be9d0872a6 (diff) | |
| download | gcc-3986e66fe0d4821d41141e5f906cc0c5ffbc25d5.tar.gz | |
* doc/rtl.texi (Regs and Memory): Document (mem:BLK (scratch)).
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@51936 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc')
| -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 fb9e011b3f3..9d662386982 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 10c81e47d65..efe36471e0a 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 |