backport: [multiple changes]

backport: [multiple changes]

2011-12-22  Doug Kwan  <dougkwan@google.com>

	Backport from mainline
	2011-03-23  Julian Brown  <julian@codesourcery.com>

	* expr.c (expand_expr_real_1): Only use BLKmode for volatile
	accesses which are not naturally aligned.

	2011-11-20  Joey Ye  <joey.ye@arm.com>

	* expr.c (expand_expr_real_1): Correctly handle strict volatile
	bitfield loads smaller than mode size.

2011-12-22  Doug Kwan  <dougkwan@google.com>

	Backport from mainline
	2011-11-20  Joey Ye  <joey.ye@arm.com>

	* gcc.dg/volatile-bitfields-1.c: New.

From-SVN: r182635