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ifcvt.c (EDGE_COMPLEX): Move definition ...

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* ifcvt.c (EDGE_COMPLEX): Move definition ...
	* basic-block.h (EDGE_COMPLEX): ... here.

	* loop.c (check_dbra_loop): Specify the register when
	generating REG_NONNEG notes and don't generate duplicates.

From-SVN: r34542
This commit is contained in:
John Wehle 2000-06-14 07:41:57 +00:00 committed by John Wehle
parent 11cf4d1831
commit 65b98a022f
4 changed files with 19 additions and 9 deletions
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8
gcc/ChangeLog
View File

@ -1,3 +1,11 @@
Wed Jun 14 03:39:58 EDT 2000 John Wehle (john@feith.com)
* ifcvt.c (EDGE_COMPLEX): Move definition ...
* basic-block.h (EDGE_COMPLEX): ... here.
* loop.c (check_dbra_loop): Specify the register when
generating REG_NONNEG notes and don't generate duplicates.
2000-06-13 Jakub Jelinek <jakub@redhat.com>
* tree.h (TYPE_USER_ALIGN, DECL_USER_ALIGN): Define.

2
gcc/basic-block.h
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@ -138,6 +138,8 @@ typedef struct edge_def {
#define EDGE_EH 16
#define EDGE_FAKE 32
#define EDGE_COMPLEX (EDGE_ABNORMAL | EDGE_ABNORMAL_CALL | EDGE_EH)
/* Basic block information indexed by block number. */
typedef struct basic_block_def {

2
gcc/ifcvt.c
View File

@ -51,8 +51,6 @@
#define MAX_CONDITIONAL_EXECUTE (BRANCH_COST + 1)
#endif
#define EDGE_COMPLEX (EDGE_ABNORMAL | EDGE_ABNORMAL_CALL | EDGE_EH)
#define NULL_EDGE ((struct edge_def *)NULL)
#define NULL_BLOCK ((struct basic_block_def *)NULL)

16
gcc/loop.c
View File

@ -7835,9 +7835,10 @@ check_dbra_loop (loop, insn_count)
% (-INTVAL (bl->biv->add_val))) == 0)
{
/* register always nonnegative, add REG_NOTE to branch */
REG_NOTES (PREV_INSN (loop_end))
= gen_rtx_EXPR_LIST (REG_NONNEG, NULL_RTX,
REG_NOTES (PREV_INSN (loop_end)));
if (! find_reg_note (jump, REG_NONNEG, NULL_RTX))
REG_NOTES (jump)
= gen_rtx_EXPR_LIST (REG_NONNEG, bl->biv->dest_reg,
REG_NOTES (jump));
bl->nonneg = 1;
return 1;
@ -7860,9 +7861,10 @@ check_dbra_loop (loop, insn_count)
&& ! reg_set_between_p (bl->biv->dest_reg, p, loop_start)
&& INTVAL (bl->biv->add_val) == -1)
{
REG_NOTES (PREV_INSN (loop_end))
= gen_rtx_EXPR_LIST (REG_NONNEG, NULL_RTX,
REG_NOTES (PREV_INSN (loop_end)));
if (! find_reg_note (jump, REG_NONNEG, NULL_RTX))
REG_NOTES (jump)
= gen_rtx_EXPR_LIST (REG_NONNEG, bl->biv->dest_reg,
REG_NOTES (jump));
bl->nonneg = 1;
return 1;
@ -8260,7 +8262,7 @@ check_dbra_loop (loop, insn_count)
/* Increment of LABEL_NUSES done above. */
/* Register is now always nonnegative,
so add REG_NONNEG note to the branch. */
REG_NOTES (tem) = gen_rtx_EXPR_LIST (REG_NONNEG, NULL_RTX,
REG_NOTES (tem) = gen_rtx_EXPR_LIST (REG_NONNEG, reg,
REG_NOTES (tem));
}
bl->nonneg = 1;