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| author | Richard Henderson <rth@redhat.com> | 2002-04-05 17:14:42 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2002-04-05 17:14:42 -0800 |
| commit | 5f9fb0e305dd9ff2cfabe5f1002e3b0578ea8fef (patch) | |
| tree | 1351f76f10712ca1fc9f4a103557a14a09021b0a /gcc/doc | |
| parent | 39b945d23be172373092d9a96fcb645d39b01202 (diff) | |
| download | gcc-5f9fb0e305dd9ff2cfabe5f1002e3b0578ea8fef.zip gcc-5f9fb0e305dd9ff2cfabe5f1002e3b0578ea8fef.tar.gz gcc-5f9fb0e305dd9ff2cfabe5f1002e3b0578ea8fef.tar.bz2 | |
* doc/rtl.texi (Regs and Memory): Document (mem:BLK (scratch)).
From-SVN: r51936
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/rtl.texi | 4 |
1 files changed, 4 insertions, 0 deletions
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 |