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2010-08-26 Paul Brook <paul@codesourcery.com>
Merge from Sourcery G++ 4.3/4.4:
2007-03-30 Paul Brook <paul@codesourcery.com>
gcc/
* calls.c (store_one_arg): Check alignment of mode used for save.
2010-08-26 Maciej Rozycki <macro@codesourcery.com>
Merge from Sourcery G++ 4.4:
=== modified file 'gcc/calls.c'
--- old/gcc/calls.c 2010-08-13 10:50:45 +0000
+++ new/gcc/calls.c 2010-08-26 15:44:20 +0000
@@ -4048,8 +4048,17 @@
/* We need to make a save area. */
unsigned int size = arg->locate.size.constant * BITS_PER_UNIT;
enum machine_mode save_mode = mode_for_size (size, MODE_INT, 1);
- rtx adr = memory_address (save_mode, XEXP (arg->stack_slot, 0));
- rtx stack_area = gen_rtx_MEM (save_mode, adr);
+ rtx adr;
+ rtx stack_area;
+
+ /* We can only use save_mode if the arg is sufficiently
+ aligned. */
+ if (STRICT_ALIGNMENT
+ && GET_MODE_ALIGNMENT (save_mode) > arg->locate.boundary)
+ save_mode = BLKmode;
+
+ adr = memory_address (save_mode, XEXP (arg->stack_slot, 0));
+ stack_area = gen_rtx_MEM (save_mode, adr);
if (save_mode == BLKmode)
{
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