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rtl.h (INSN_ANNULLED_BRANCH_P): Accept INSN too, update comment.

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2002-05-10  David S. Miller  <davem@redhat.com>

	* rtl.h (INSN_ANNULLED_BRANCH_P): Accept INSN too, update comment.
	(struct rtx_def): Update unchanging flag comment.
	* doc/rtl.texi (INSN_ANNULLED_BRANCH_P): Update description.
	* reorg.c (delete_from_delay_list): INSN_ANNULLED_BRANCH_P needs
	to be handled to INSN too.
	(dbr_schedule): Likewise.
	* resource.c (next_insn_no_annul): Likewise.

From-SVN: r53370
This commit is contained in:
David S. Miller 2002-05-10 13:13:02 -07:00 committed by David S. Miller
parent 6c45cb0da4
commit 7440af146e
5 changed files with 24 additions and 10 deletions
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8
gcc/ChangeLog
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@ -1,5 +1,13 @@
2002-05-10 David S. Miller <davem@redhat.com>
* rtl.h (INSN_ANNULLED_BRANCH_P): Accept INSN too, update comment.
(struct rtx_def): Update unchanging flag comment.
* doc/rtl.texi (INSN_ANNULLED_BRANCH_P): Update description.
* reorg.c (delete_from_delay_list): INSN_ANNULLED_BRANCH_P needs
to be handled to INSN too.
(dbr_schedule): Likewise.
* resource.c (next_insn_no_annul): Likewise.
* cse.c (rtx_cost): Remove multiplication by power of 2 special
casing.

10
gcc/doc/rtl.texi
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@ -397,11 +397,13 @@ Stored in the @code{unchanging} field and printed as @samp{/u}.
@findex INSN_ANNULLED_BRANCH_P
@cindex @code{jump_insn} and @samp{/u}
@cindex @code{call_insn} and @samp{/u}
@cindex @code{unchanging}, in @code{jump_insn} and @code{call_insn}
@cindex @code{insn} and @samp{/u}
@cindex @code{unchanging}, in @code{jump_insn}, @code{call_insn} and @code{insn}
@item INSN_ANNULLED_BRANCH_P (@var{x})
In a @code{jump_insn} or @code{call_insn} indicates that the branch is
an annulling one. See the discussion under @code{sequence} below.
Stored in the @code{unchanging} field and printed as @samp{/u}.
In a @code{jump_insn}, @code{call_insn}, or @code{insn} indicates
that the branch is an annulling one. See the discussion under
@code{sequence} below. Stored in the @code{unchanging} field and
printed as @samp{/u}.
@findex INSN_DEAD_CODE_P
@cindex @code{insn} and @samp{/s}

6
gcc/reorg.c
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@ -618,7 +618,8 @@ delete_from_delay_slot (insn)
if (delay_list)
trial = emit_delay_sequence (trial, delay_list, XVECLEN (seq, 0) - 2);
else if (GET_CODE (trial) == JUMP_INSN
|| GET_CODE (trial) == CALL_INSN)
|| GET_CODE (trial) == CALL_INSN
|| GET_CODE (trial) == INSN)
INSN_ANNULLED_BRANCH_P (trial) = 0;
INSN_FROM_TARGET_P (insn) = 0;
@ -3630,7 +3631,8 @@ dbr_schedule (first, file)
rtx target;
if (GET_CODE (insn) == JUMP_INSN
|| GET_CODE (insn) == CALL_INSN)
|| GET_CODE (insn) == CALL_INSN
|| GET_CODE (insn) == INSN)
INSN_ANNULLED_BRANCH_P (insn) = 0;
INSN_FROM_TARGET_P (insn) = 0;

4
gcc/resource.c
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@ -175,7 +175,9 @@ next_insn_no_annul (insn)
{
/* If INSN is an annulled branch, skip any insns from the target
of the branch. */
if (GET_CODE (insn) == JUMP_INSN
if ((GET_CODE (insn) == JUMP_INSN
|| GET_CODE (insn) == CALL_INSN
|| GET_CODE (insn) == INSN)
&& INSN_ANNULLED_BRANCH_P (insn)
&& NEXT_INSN (PREV_INSN (insn)) != insn)
{

6
gcc/rtl.h
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@ -140,7 +140,7 @@ struct rtx_def
1 in a SYMBOL_REF if it addresses something in the per-function
constants pool.
1 in a CALL_INSN, NOTE, or EXPR_LIST for a const or pure call.
1 in a JUMP_INSN or CALL_INSN of an annulling branch. */
1 in a JUMP_INSN, CALL_INSN, or INSN of an annulling branch. */
unsigned int unchanging : 1;
/* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile.
1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE
@ -537,9 +537,9 @@ do { \
#define SIBLING_CALL_P(RTX) \
(RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump)
/* 1 if RTX is an insn that is an annulling branch. */
/* 1 if RTX is a jump_insn, call_insn, or insn that is an annulling branch. */
#define INSN_ANNULLED_BRANCH_P(RTX) \
(RTL_FLAG_CHECK2("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN)->unchanging)
(RTL_FLAG_CHECK3("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN, INSN)->unchanging)
/* 1 if RTX is an insn that is dead code. Valid only for dead-code
elimination phase. */