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cfgexpand.c (expand_stack_alignment): Assert that stack_realign_drap and drap_rtx must match.

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2008-08-01  H.J. Lu  <hongjiu.lu@intel.com>

	* cfgexpand.c (expand_stack_alignment): Assert that
	stack_realign_drap and drap_rtx must match.

	* function.c (instantiate_new_reg): If DRAP is used to realign
	stack, replace virtual_incoming_args_rtx with internal arg
	pointer.

From-SVN: r138524
This commit is contained in:
H.J. Lu 2008-08-01 16:05:50 +00:00 committed by H.J. Lu
parent 678e7c6504
commit d015f7cc65
3 changed files with 15 additions and 3 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2008-08-01 H.J. Lu <hongjiu.lu@intel.com>
* cfgexpand.c (expand_stack_alignment): Assert that
stack_realign_drap and drap_rtx must match.
* function.c (instantiate_new_reg): If DRAP is used to realign
stack, replace virtual_incoming_args_rtx with internal arg
pointer.
2008-08-01 Richard Guenther <rguenther@suse.de>
* tree-ssa-pre.c (fini_pre): Take in_fre parameter. Free

3
gcc/cfgexpand.c
View File

@ -2226,6 +2226,9 @@ expand_stack_alignment (void)
gcc_assert (targetm.calls.get_drap_rtx != NULL);
drap_rtx = targetm.calls.get_drap_rtx ();
/* stack_realign_drap and drap_rtx must match. */
gcc_assert ((stack_realign_drap != 0) == (drap_rtx != NULL));
/* Do nothing if NULL is returned, which means DRAP is not needed. */
if (NULL != drap_rtx)
{

6
gcc/function.c
View File

@ -1215,10 +1215,10 @@ instantiate_new_reg (rtx x, HOST_WIDE_INT *poffset)
if (x == virtual_incoming_args_rtx)
{
/* Replace virtual_incoming_args_rtx to internal arg pointer here */
if (crtl->args.internal_arg_pointer != virtual_incoming_args_rtx)
if (stack_realign_drap)
{
gcc_assert (stack_realign_drap);
/* Replace virtual_incoming_args_rtx with internal arg
pointer if DRAP is used to realign stack. */
new = crtl->args.internal_arg_pointer;
offset = 0;
}