OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

cse.c (cse_find_path): Refine change to exclude EDGE_ABNORMAL_CALL edges only... 

2011-06-02  Eric Botcazou  <ebotcazou@adacore.com>

	* cse.c (cse_find_path): Refine change to exclude EDGE_ABNORMAL_CALL
	edges only, when there is a non-local label in the function.
	* postreload-gcse.c (bb_has_well_behaved_predecessors): Likewise.

From-SVN: r174585
This commit is contained in:
Eric Botcazou 2011-06-02 21:52:46 +00:00 committed by Eric Botcazou
parent cde3a7a969
commit 76015c34a9
3 changed files with 11 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2011-06-02 Eric Botcazou <ebotcazou@adacore.com>
* cse.c (cse_find_path): Refine change to exclude EDGE_ABNORMAL_CALL
edges only, when there is a non-local label in the function.
* postreload-gcse.c (bb_has_well_behaved_predecessors): Likewise.
2011-06-02 Uros Bizjak <ubizjak@gmail.com>
* config/i386/constraints.md (Y3): New register constraint.

2
gcc/cse.c
View File

@ -6193,7 +6193,7 @@ cse_find_path (basic_block first_bb, struct cse_basic_block_data *data,
e = NULL;
if (e
&& (e->flags & EDGE_ABNORMAL) == 0
&& !((e->flags & EDGE_ABNORMAL_CALL) && cfun->has_nonlocal_label)
&& e->dest != EXIT_BLOCK_PTR
&& single_pred_p (e->dest)
/* Avoid visiting basic blocks twice. The large comment

7
gcc/postreload-gcse.c
View File

@ -912,12 +912,10 @@ get_avail_load_store_reg (rtx insn)
static bool
bb_has_well_behaved_predecessors (basic_block bb)
{
unsigned int edge_count = EDGE_COUNT (bb->preds);
edge pred;
edge_iterator ei;
if (edge_count == 0
|| (edge_count == 1 && (single_pred_edge (bb)->flags & EDGE_ABNORMAL)))
if (EDGE_COUNT (bb->preds) == 0)
return false;
FOR_EACH_EDGE (pred, ei, bb->preds)
@ -925,6 +923,9 @@ bb_has_well_behaved_predecessors (basic_block bb)
if ((pred->flags & EDGE_ABNORMAL) && EDGE_CRITICAL_P (pred))
return false;
if ((pred->flags & EDGE_ABNORMAL_CALL) && cfun->has_nonlocal_label)
return false;
if (JUMP_TABLE_DATA_P (BB_END (pred->src)))
return false;
}