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final.c (shorten_branches): Make value passed to LABEL_ALIGN conform to documentation.

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* final.c (shorten_branches): Make value passed to LABEL_ALIGN
	conform to documentation.
	* sh.h (LABEL_ALIGN): If aligning loops, call sh_label_align
	to check for special cases.
	* sh-protos.h (sh_label_align): Declare.
	* sh.c (sh_label_align): Define.

From-SVN: r32114
This commit is contained in:
J"orn Rennecke 2000-02-23 17:18:15 +00:00 committed by Joern Rennecke
parent 699729979c
commit 2148624a44
5 changed files with 37 additions and 2 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
Wed Feb 23 16:42:21 2000 J"orn Rennecke <amylaar@cygnus.co.uk>
* final.c (shorten_branches): Make value passed to LABEL_ALIGN
conform to documentation.
* sh.h (LABEL_ALIGN): If aligning loops, call sh_label_align
to check for special cases.
* sh-protos.h (sh_label_align): Declare.
* sh.c (sh_label_align): Define.
2000-02-22 Andrew Haley <aph@cygnus.com>
* config/mips/mips.h (GAS_ASM_SPEC): Pass -mgp32/-mgp64 to gas.

1
gcc/config/sh/sh-protos.h
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@ -36,6 +36,7 @@ extern const char *output_far_jump PARAMS ((rtx, rtx));
extern void machine_dependent_reorg PARAMS ((rtx));
extern struct rtx_def *sfunc_uses_reg PARAMS ((rtx));
extern int barrier_align PARAMS ((rtx));
extern int sh_loop_align PARAMS ((rtx));
extern int fp_zero_operand PARAMS ((rtx));
extern int fp_one_operand PARAMS ((rtx));
extern int fp_int_operand PARAMS ((rtx));

24
gcc/config/sh/sh.c
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@ -2786,6 +2786,30 @@ barrier_align (barrier_or_label)
return CACHE_LOG;
}
/* If we are inside a phony loop, almost any kind of label can turn up as the
first one in the loop. Aligning a braf label causes incorrect switch
destination addresses; we can detect braf labels because they are
followed by a BARRIER.
Applying loop alignment to small constant or switch tables is a waste
of space, so we suppress this too. */
int
sh_loop_align (label)
rtx label;
{
rtx next = label;
do
next = next_nonnote_insn (next);
while (next && GET_CODE (next) == CODE_LABEL);
if (! next
|| GET_RTX_CLASS (GET_CODE (next)) != 'i'
|| GET_CODE (PATTERN (next)) == ADDR_DIFF_VEC
|| recog_memoized (next) == CODE_FOR_consttable_2)
return 0;
return 2;
}
/* Exported to toplev.c.
Do a final pass over the function, just before delayed branch

3
gcc/config/sh/sh.h
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@ -351,7 +351,8 @@ do { \
barrier_align (LABEL_AFTER_BARRIER)
#define LOOP_ALIGN(A_LABEL) \
((! optimize || TARGET_HARVARD || TARGET_SMALLCODE) ? 0 : 2)
((! optimize || TARGET_HARVARD || TARGET_SMALLCODE) \
? 0 : sh_loop_align (A_LABEL))
#define LABEL_ALIGN(A_LABEL) \
( \

2
gcc/final.c
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@ -1134,7 +1134,7 @@ shorten_branches (first)
break;
else if (GET_CODE (label) == CODE_LABEL)
{
log = LOOP_ALIGN (insn);
log = LOOP_ALIGN (label);
if (max_log < log)
{
max_log = log;