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re PR tree-optimization/91236 (ICE in walk_non_aliased_vuses at gcc/tree-ssa-alias.c:3395 on aarch64)

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2019-07-25  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/91236
	* tree-ssa-sccvn.c (vn_walk_cb_data::push_partial_def): Fix
	size of CONSTRUCTOR write.  Fix buffer size we pass to
	native_encode_expr.

From-SVN: r273787
This commit is contained in:
Richard Biener 2019-07-25 06:57:46 +00:00 committed by Richard Biener
parent b631bdb3c1
commit 599331c858
2 changed files with 9 additions and 2 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2019-07-25 Richard Biener <rguenther@suse.de>
PR tree-optimization/91236
* tree-ssa-sccvn.c (vn_walk_cb_data::push_partial_def): Fix
size of CONSTRUCTOR write. Fix buffer size we pass to
native_encode_expr.
2019-07-24 Jozef Lawrynowicz <jozef.l@mittosystems.com>
* config.gcc (msp430*-*-*): Fix non-GNU style in r273774.

4
gcc/tree-ssa-sccvn.c
View File

@ -1818,7 +1818,7 @@ vn_walk_cb_data::push_partial_def (const pd_data &pd, tree vuse,
if (TREE_CODE (pd.rhs) == CONSTRUCTOR)
/* Empty CONSTRUCTOR. */
memset (buffer + MAX (0, pd.offset),
0, MIN ((HOST_WIDE_INT)sizeof (buffer),
0, MIN ((HOST_WIDE_INT)sizeof (buffer) - MAX (0, pd.offset),
pd.size + MIN (0, pd.offset)));
else
{
@ -1833,7 +1833,7 @@ vn_walk_cb_data::push_partial_def (const pd_data &pd, tree vuse,
pad = GET_MODE_SIZE (mode) - pd.size;
}
len = native_encode_expr (pd.rhs, buffer + MAX (0, pd.offset),
sizeof (buffer - MAX (0, pd.offset)),
sizeof (buffer) - MAX (0, pd.offset),
MAX (0, -pd.offset) + pad);
if (len <= 0 || len < (pd.size - MAX (0, -pd.offset)))
{