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[PATCH] Fix PR77450
- From: Richard Biener <rguenther at suse dot de>
- To: gcc-patches at gcc dot gnu dot org
- Date: Tue, 6 Sep 2016 14:41:37 +0200 (CEST)
- Subject: [PATCH] Fix PR77450
- Authentication-results: sourceware.org; auth=none
The following fixes PR77450.
Bootstrapped and tested on x86_64-unknown-linux-gnu, applied to trunk.
Richard.
2016-09-06 Richard Biener <rguenther@suse.de>
PR c/77450
c-family/
* c-common.c (c_common_mark_addressable_vec): Handle
COMPOUND_LITERAL_EXPR.
* c-c++-common/vector-subscript-7.c: Adjust.
* c-c++-common/vector-subscript-8.c: New testcase.
Index: gcc/c-family/c-common.c
===================================================================
--- gcc/c-family/c-common.c (revision 240004)
+++ gcc/c-family/c-common.c (working copy)
@@ -10918,7 +10918,9 @@ c_common_mark_addressable_vec (tree t)
{
while (handled_component_p (t))
t = TREE_OPERAND (t, 0);
- if (!VAR_P (t) && TREE_CODE (t) != PARM_DECL)
+ if (!VAR_P (t)
+ && TREE_CODE (t) != PARM_DECL
+ && TREE_CODE (t) != COMPOUND_LITERAL_EXPR)
return;
TREE_ADDRESSABLE (t) = 1;
}
Index: gcc/testsuite/c-c++-common/vector-subscript-7.c
===================================================================
--- gcc/testsuite/c-c++-common/vector-subscript-7.c (revision 240004)
+++ gcc/testsuite/c-c++-common/vector-subscript-7.c (working copy)
@@ -1,5 +1,5 @@
/* { dg-do compile } */
-/* { dg-options "-O -fdump-tree-ccp1" } */
+/* { dg-options "-O -fdump-tree-fre1" } */
typedef int v4si __attribute__ ((vector_size (16)));
@@ -11,4 +11,4 @@ main (int argc, char** argv)
return ((v4si){1, 2, 42, 0})[j];
}
-/* { dg-final { scan-tree-dump "return 42;" "ccp1" } } */
+/* { dg-final { scan-tree-dump "return 42;" "fre1" } } */
Index: gcc/testsuite/c-c++-common/vector-subscript-8.c
===================================================================
--- gcc/testsuite/c-c++-common/vector-subscript-8.c (revision 0)
+++ gcc/testsuite/c-c++-common/vector-subscript-8.c (working copy)
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+
+typedef int V __attribute__((vector_size(4)));
+
+void
+foo(void)
+{
+ (V){ 0 }[0] = 0;
+}