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authorrth <rth@138bc75d-0d04-0410-961f-82ee72b054a4>2002-09-17 06:56:47 +0000
committerrth <rth@138bc75d-0d04-0410-961f-82ee72b054a4>2002-09-17 06:56:47 +0000
commite83ff88ba284a3852c19a2dad4682c9b8b6e52e6 (patch)
tree052358a4ba373ec54ae0d5b223c56dd528b51e0b /gcc/expr.c
parent8837693a0407cc0ccc3ccb25c2288664f1182e5e (diff)
downloadgcc-e83ff88ba284a3852c19a2dad4682c9b8b6e52e6.tar.gz
* expr.c (emit_block_move): Set memory block size as appropriate
for the copy. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@57233 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/expr.c')
-rw-r--r--gcc/expr.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/expr.c b/gcc/expr.c
index 5872ab055fb..4ac7252332f 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -1733,6 +1733,16 @@ emit_block_move (x, y, size, method)
if (size == 0)
abort ();
+ /* Set MEM_SIZE as appropriate for this block copy. The main place this
+ can be incorrect is coming from __builtin_memcpy. */
+ if (GET_CODE (size) == CONST_INT)
+ {
+ x = shallow_copy_rtx (x);
+ y = shallow_copy_rtx (y);
+ set_mem_size (x, size);
+ set_mem_size (y, size);
+ }
+
if (GET_CODE (size) == CONST_INT && MOVE_BY_PIECES_P (INTVAL (size), align))
move_by_pieces (x, y, INTVAL (size), align);
else if (emit_block_move_via_movstr (x, y, size, align))