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riscv-gcc-1
Commit 5f9fb0e3 by Richard Henderson Committed by Richard Henderson
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* doc/rtl.texi (Regs and Memory): Document (mem:BLK (scratch)). 

From-SVN: r51936
parent 39b945d2
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gcc/ChangeLog
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> 2002-04-05 Jakub Jeilnek <jakub@redhat.com>
* mklibgcc.in: Use $tmpmapfile, not tmp-$@. * mklibgcc.in: Use $tmpmapfile, not tmp-$@.
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gcc/doc/rtl.texi
...@@ -1558,6 +1558,10 @@ a unit of memory is accessed. @var{alias} specifies an alias set for the ...@@ -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. In general two items are in different alias sets if they cannot
reference the same memory address. 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 @findex addressof
@item (addressof:@var{m} @var{reg}) @item (addressof:@var{m} @var{reg})
This RTX represents a request for the address of register @var{reg}. Its mode This RTX represents a request for the address of register @var{reg}. Its mode
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