From: Steve Ellcey <sellcey@imgtec.com>
Date: Thu, 5 Mar 2015 16:34:03 +0000 (+0000)
Subject: re PR middle-end/65315 (incorrect alignment of local variable with aligned attribute)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a8eeec27a94869785782a2d98969b437c4c5d62e;p=gcc.git

re PR middle-end/65315 (incorrect alignment of local variable with aligned attribute)

2015-03-05  Steve Ellcey  <sellcey@imgtec.com>

	PR middle-end/65315
	* cfgexpand.c (expand_stack_vars): Update large_align to maximum
	needed alignment.

From-SVN: r221219
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index cfacea1775b..368a7d04887 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-03-05  Steve Ellcey  <sellcey@imgtec.com>
+
+	PR middle-end/65315
+	* cfgexpand.c (expand_stack_vars): Update large_align to maximum
+	needed alignment.
+
 2015-03-05  Martin Liska  <mliska@suse.cz>
 
 	* ipa-inline.c (inline_small_functions): Set default value to
diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c
index 7dfe1f6e7f5..569cd0d2390 100644
--- a/gcc/cfgexpand.c
+++ b/gcc/cfgexpand.c
@@ -973,6 +973,13 @@ expand_stack_vars (bool (*pred) (size_t), struct stack_vars_data *data)
 	  i = stack_vars_sorted[si];
 	  alignb = stack_vars[i].alignb;
 
+	  /* All "large" alignment decls come before all "small" alignment
+	     decls, but "large" alignment decls are not sorted based on
+	     their alignment.  Increase large_align to track the largest
+	     required alignment.  */
+	  if ((alignb * BITS_PER_UNIT) > large_align)
+	    large_align = alignb * BITS_PER_UNIT;
+
 	  /* Stop when we get to the first decl with "small" alignment.  */
 	  if (alignb * BITS_PER_UNIT <= MAX_SUPPORTED_STACK_ALIGNMENT)
 	    break;