mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-03-08 13:27:25 +08:00
Code Issues Packages Projects Releases Wiki Activity

builtins.c (expand_builtin_bzero): Convert `length' argument to sizetype.

Browse Source 
* builtins.c (expand_builtin_bzero): Convert `length' argument
        to sizetype.

From-SVN: r32732
This commit is contained in:
Richard Henderson 2000-03-24 15:47:17 -08:00 committed by Richard Henderson
parent 46238b7dab
commit 3477addf36
2 changed files with 21 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2000-03-24 Richard Henderson <rth@cygnus.com>
* builtins.c (expand_builtin_bzero): Convert `length' argument
to sizetype.
2000-03-24 Jakub Jelinek <jakub@redhat.com>
* sibcall.c (skip_copy_to_return_value): Use OUTGOING_REGNO for

34
gcc/builtins.c
View File

@ -1582,33 +1582,31 @@ expand_builtin_bzero (exp)
tree exp;
{
tree arglist = TREE_OPERAND (exp, 1);
tree dest, size, newarglist;
rtx result;
if (arglist == 0
/* Arg could be non-pointer if user redeclared this fcn wrong. */
|| TREE_CODE (TREE_TYPE (TREE_VALUE (arglist))) != POINTER_TYPE
|| TREE_CODE (TREE_TYPE (dest = TREE_VALUE (arglist))) != POINTER_TYPE
|| TREE_CHAIN (arglist) == 0
|| (TREE_CODE (TREE_TYPE (TREE_VALUE (TREE_CHAIN (arglist))))
|| (TREE_CODE (TREE_TYPE (size = TREE_VALUE (TREE_CHAIN (arglist))))
!= INTEGER_TYPE))
return 0;
else
{
tree newarglist;
rtx result;
return NULL_RTX;
/* New argument list transforming bzero(x, y) -> memset(x, 0, y). */
newarglist = build_tree_list (NULL_TREE, TREE_VALUE (arglist));
chainon (newarglist, build_tree_list (NULL_TREE, integer_zero_node));
chainon (newarglist,
build_tree_list (NULL_TREE, TREE_VALUE (TREE_CHAIN (arglist))));
TREE_OPERAND (exp, 1) = newarglist;
/* New argument list transforming bzero(ptr x, int y) to
memset(ptr x, int 0, size_t y). */
newarglist = build_tree_list (NULL_TREE, convert (sizetype, size));
newarglist = tree_cons (NULL_TREE, integer_zero_node, newarglist);
newarglist = tree_cons (NULL_TREE, dest, newarglist);
result = expand_builtin_memset(exp);
TREE_OPERAND (exp, 1) = newarglist;
result = expand_builtin_memset(exp);
/* Always restore the original arguments. */
TREE_OPERAND (exp, 1) = arglist;
/* Always restore the original arguments. */
TREE_OPERAND (exp, 1) = arglist;
return result;
}
return result;
}
#ifdef HAVE_cmpstrsi