re PR tree-optimization/78148 (r241649 causes -fcompare-debug failure on ppc64le)

	PR target/78148
	* gimple-ssa-store-merging.c
	(imm_store_chain_info::output_merged_store): Use build_aligned_type
	instead of SET_TYPE_ALIGN on shared integral type.

	* gcc.dg/pr78148.c: New test.

From-SVN: r241679

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2a74c71ef65c6db917fa71ee68e179bb03d2f0df..852426aefa1844e4b80936a6f9097ccc12bd1d31 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2016-10-29  Jakub Jelinek  <jakub@redhat.com>
+
+       PR target/78148
+       * gimple-ssa-store-merging.c
+       (imm_store_chain_info::output_merged_store): Use build_aligned_type
+       instead of SET_TYPE_ALIGN on shared integral type.
+
 2016-10-29  John David Anglin  <danglin@gcc.gnu.org>
 
        * config/pa/pa.h (BIGGEST_ALIGNMENT): Adjust comment.

diff --git a/gcc/gimple-ssa-store-merging.c b/gcc/gimple-ssa-store-merging.c
index 5a293d7f30735499aafebeb935b073946eab5691..97af1418c978093044ab9cb859eb7b6c249873ce 100644 (file)
--- a/gcc/gimple-ssa-store-merging.c
+++ b/gcc/gimple-ssa-store-merging.c
@@ -1130,7 +1130,7 @@ imm_store_chain_info::output_merged_store (tree base, merged_store_group *group)
       location_t loc = get_location_for_stmts (split_store->orig_stmts);
 
       tree int_type = build_nonstandard_integer_type (try_size, UNSIGNED);
-      SET_TYPE_ALIGN (int_type, align);
+      int_type = build_aligned_type (int_type, align);
       tree addr = build_fold_addr_expr (base);
       tree dest = fold_build2 (MEM_REF, int_type, addr,
                               build_int_cst (offset_type, try_pos));

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 087d4f3b359af57d77c6ba6fac3bbd199cfeb720..d23181c359298567b2419e6b27f722e168a31507 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2016-10-29  Jakub Jelinek  <jakub@redhat.com>
+
+       PR target/78148
+       * gcc.dg/pr78148.c: New test.
+
 2016-10-28  Eric Botcazou  <ebotcazou@adacore.com>
 
        * gcc.target/sparc/overflow-3.c: Replace and move old one to...

diff --git a/gcc/testsuite/gcc.dg/pr78148.c b/gcc/testsuite/gcc.dg/pr78148.c
new file mode 100644 (file)
index 0000000..c3c9b2e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr78148.c
@@ -0,0 +1,31 @@
+/* PR target/78148 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fcompare-debug" } */
+
+struct A { int a, b; };
+struct B { char c, d; };
+extern void bar (struct A, struct B);
+struct C { char e, f; } a;
+struct D
+{
+  int g;
+  struct C h[4];
+};
+struct D *e;
+
+struct D
+foo (void)
+{
+  int b;
+  struct B c;
+  struct A d;
+  d.b = c.c = c.d = 0;
+  bar (d, c);
+}
+
+void
+baz ()
+{
+  e->h[0].e = e->h[0].f = 0;
+  foo ();
+}