From: Bernd Schmidt <bernds@redhat.com>
Date: Sat, 5 Mar 2016 05:36:42 +0000 (-0700)
Subject: re PR c/69973 (ICE on excessive attribute vector_size)
X-Git-Tag: basepoints/gcc-7~566
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b6b552fd01d723df6a9b71e3b11bff5c8965ea0e;p=thirdparty%2Fgcc.git

re PR c/69973 (ICE on excessive attribute vector_size)

	PR c/69973
	* targhooks.c (default_vector_alignment): Limit to MAX_OFILE_ALIGNMENT.

	PR c/69973
	* gcc.dg/pr69973.c: New test.

From-SVN: r234002
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d5fd0d390b3a..7d2034bbca2b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
 2016-03-04  Bernd Schmidt  <bschmidt@redhat.com>
 
+	PR c/69973
+	* targhooks.c (default_vector_alignment): Limit to MAX_OFILE_ALIGNMENT.
+
 	PR rtl-optimization/69941
 	* postreload.c (reload_combine_recognize_pattern): Ensure all uses of
 	the reg share its mode.
diff --git a/gcc/targhooks.c b/gcc/targhooks.c
index 74af91a6b1dd..a34227705d2b 100644
--- a/gcc/targhooks.c
+++ b/gcc/targhooks.c
@@ -1031,7 +1031,10 @@ tree default_mangle_decl_assembler_name (tree decl ATTRIBUTE_UNUSED,
 HOST_WIDE_INT
 default_vector_alignment (const_tree type)
 {
-  return tree_to_shwi (TYPE_SIZE (type));
+  HOST_WIDE_INT align = tree_to_shwi (TYPE_SIZE (type));
+  if (align > MAX_OFILE_ALIGNMENT)
+    align = MAX_OFILE_ALIGNMENT;
+  return align;
 }
 
 bool
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index d412efdd0572..683585c8b321 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
 2016-03-04  Bernd Schmidt  <bschmidt@redhat.com>
 
+	PR c/69973
+	* gcc.dg/pr69973.c: New test.
+
 	PR rtl-optimization/69941
 	* gcc.dg/torture/pr69941.c: New test.
 
diff --git a/gcc/testsuite/gcc.dg/pr69973.c b/gcc/testsuite/gcc.dg/pr69973.c
new file mode 100644
index 000000000000..648bc5679e9a
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr69973.c
@@ -0,0 +1,2 @@
+/* { dg-do compile } */
+typedef int v4si __attribute__ ((vector_size (1 << 29)));