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partial fix for PR target/10021

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partial fix for PR target/10021
* emit-rtl.c (set_mem_attribute_minus_bitpos): When handle ARRAY_REF,
loop over new variable t2 instead of t.

From-SVN: r69111
This commit is contained in:
James E Wilson 2003-07-08 17:18:19 -07:00 committed by Jim Wilson
parent 518ed319bd
commit 1b1838b64c
2 changed files with 22 additions and 13 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2003-07-08 James E Wilson <wilson@tuliptree.org>
PR target/10021
* emit-rtl.c (set_mem_attribute_minus_bitpos): When handle ARRAY_REF,
loop over new variable t2 instead of t.
2003-07-08 Danny Smith <dannysmith@users.sourceforge.net>
PR bootstrap/11455

29
gcc/emit-rtl.c
View File

@ -1915,11 +1915,14 @@ set_mem_attributes_minus_bitpos (rtx ref, tree t, int objectp,
else if (TREE_CODE (t) == ARRAY_REF)
{
tree off_tree = size_zero_node;
/* We can't modify t, because we use it at the end of the
function. */
tree t2 = t;
do
{
tree index = TREE_OPERAND (t, 1);
tree array = TREE_OPERAND (t, 0);
tree index = TREE_OPERAND (t2, 1);
tree array = TREE_OPERAND (t2, 0);
tree domain = TYPE_DOMAIN (TREE_TYPE (array));
tree low_bound = (domain ? TYPE_MIN_VALUE (domain) : 0);
tree unit_size = TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (array)));
@ -1936,7 +1939,7 @@ set_mem_attributes_minus_bitpos (rtx ref, tree t, int objectp,
WITH_RECORD_EXPR; if the component size is, pass our
component to one. */
if (CONTAINS_PLACEHOLDER_P (index))
index = build (WITH_RECORD_EXPR, TREE_TYPE (index), index, t);
index = build (WITH_RECORD_EXPR, TREE_TYPE (index), index, t2);
if (CONTAINS_PLACEHOLDER_P (unit_size))
unit_size = build (WITH_RECORD_EXPR, sizetype,
unit_size, array);
@ -1947,28 +1950,28 @@ set_mem_attributes_minus_bitpos (rtx ref, tree t, int objectp,
index,
unit_size)),
off_tree));
t = TREE_OPERAND (t, 0);
t2 = TREE_OPERAND (t2, 0);
}
while (TREE_CODE (t) == ARRAY_REF);
while (TREE_CODE (t2) == ARRAY_REF);
if (DECL_P (t))
if (DECL_P (t2))
{
expr = t;
expr = t2;
offset = NULL;
if (host_integerp (off_tree, 1))
{
HOST_WIDE_INT ioff = tree_low_cst (off_tree, 1);
HOST_WIDE_INT aoff = (ioff & -ioff) * BITS_PER_UNIT;
align = DECL_ALIGN (t);
align = DECL_ALIGN (t2);
if (aoff && (unsigned HOST_WIDE_INT) aoff < align)
align = aoff;
offset = GEN_INT (ioff);
apply_bitpos = bitpos;
}
}
else if (TREE_CODE (t) == COMPONENT_REF)
else if (TREE_CODE (t2) == COMPONENT_REF)
{
expr = component_ref_for_mem_expr (t);
expr = component_ref_for_mem_expr (t2);
if (host_integerp (off_tree, 1))
{
offset = GEN_INT (tree_low_cst (off_tree, 1));
@ -1978,10 +1981,10 @@ set_mem_attributes_minus_bitpos (rtx ref, tree t, int objectp,
the size we got from the type? */
}
else if (flag_argument_noalias > 1
&& TREE_CODE (t) == INDIRECT_REF
&& TREE_CODE (TREE_OPERAND (t, 0)) == PARM_DECL)
&& TREE_CODE (t2) == INDIRECT_REF
&& TREE_CODE (TREE_OPERAND (t2, 0)) == PARM_DECL)
{
expr = t;
expr = t2;
offset = NULL;
}
}