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calls.c (emit_call_1): Don't use REG_ALWAYS_RETURN.

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* calls.c (emit_call_1): Don't use  REG_ALWAYS_RETURN.
	(emit_library_call_value_1): Don't use LCT_ALWAYS_RETURN and
	REG_ALWAYS_RETURN.
	* cfgrtl.c (need_fake_edge_p): Likewise.
	* combine.c (distribute_notes): Likewise.
	* emit-rtl.c (try_split): Likewise.
	* recog.c (peephole2_opimize): Likewise.
	* reg-notes.def (ALWAYS_RETURN): Remove.
	* rtl.h (LCT_ALWAYS_RETURN): Remove.
	* tree-cfg.c (need_fake_edge_p): Don't use ECF_ALWAYS_RETURN.
	* tree.h (ECF_ALWAYS_RETURN): Remove.

From-SVN: r95690
This commit is contained in:
Kazu Hirata 2005-02-28 18:18:26 +00:00 • committed by Kazu Hirata
parent ac5205bd7d
commit 321cf1f25e
10 changed files with 18 additions and 20 deletions
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14
gcc/ChangeLog
View file

@ -1,3 +1,17 @@
2005-02-28 Kazu Hirata <kazu@cs.umass.edu>
* calls.c (emit_call_1): Don't use REG_ALWAYS_RETURN.
(emit_library_call_value_1): Don't use LCT_ALWAYS_RETURN and
REG_ALWAYS_RETURN.
* cfgrtl.c (need_fake_edge_p): Likewise.
* combine.c (distribute_notes): Likewise.
* emit-rtl.c (try_split): Likewise.
* recog.c (peephole2_opimize): Likewise.
* reg-notes.def (ALWAYS_RETURN): Remove.
* rtl.h (LCT_ALWAYS_RETURN): Remove.
* tree-cfg.c (need_fake_edge_p): Don't use ECF_ALWAYS_RETURN.
* tree.h (ECF_ALWAYS_RETURN): Remove.
2005-02-28 Roger Sayle <roger@eyesopen.com>
PR middle-end/19874

6
gcc/calls.c
View file

@ -395,9 +395,6 @@ emit_call_1 (rtx funexp, tree fntree, tree fndecl ATTRIBUTE_UNUSED,
if (ecf_flags & ECF_NORETURN)
REG_NOTES (call_insn) = gen_rtx_EXPR_LIST (REG_NORETURN, const0_rtx,
REG_NOTES (call_insn));
if (ecf_flags & ECF_ALWAYS_RETURN)
REG_NOTES (call_insn) = gen_rtx_EXPR_LIST (REG_ALWAYS_RETURN, const0_rtx,
REG_NOTES (call_insn));
if (ecf_flags & ECF_RETURNS_TWICE)
{
@ -3234,9 +3231,6 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value,
case LCT_THROW:
flags = ECF_NORETURN;
break;
case LCT_ALWAYS_RETURN:
flags = ECF_ALWAYS_RETURN;
break;
case LCT_RETURNS_TWICE:
flags = ECF_RETURNS_TWICE;
break;

1
gcc/cfgrtl.c
View file

@ -2892,7 +2892,6 @@ need_fake_edge_p (rtx insn)
if ((CALL_P (insn)
&& !SIBLING_CALL_P (insn)
&& !find_reg_note (insn, REG_NORETURN, NULL)
&& !find_reg_note (insn, REG_ALWAYS_RETURN, NULL)
&& !CONST_OR_PURE_CALL_P (insn)))
return true;

1
gcc/combine.c
View file

@ -11886,7 +11886,6 @@ distribute_notes (rtx notes, rtx from_insn, rtx i3, rtx i2)
}
break;
case REG_ALWAYS_RETURN:
case REG_NORETURN:
case REG_SETJMP:
/* These notes must remain with the call. It should not be

1
gcc/emit-rtl.c
View file

@ -3206,7 +3206,6 @@ try_split (rtx pat, rtx trial, int last)
case REG_NORETURN:
case REG_SETJMP:
case REG_ALWAYS_RETURN:
insn = insn_last;
while (insn != NULL_RTX)
{

1
gcc/recog.c
View file

@ -3070,7 +3070,6 @@ peephole2_optimize (FILE *dump_file ATTRIBUTE_UNUSED)
{
case REG_NORETURN:
case REG_SETJMP:
case REG_ALWAYS_RETURN:
REG_NOTES (new_insn)
= gen_rtx_EXPR_LIST (REG_NOTE_KIND (note),
XEXP (note, 0),

3
gcc/reg-notes.def
View file

@ -167,6 +167,3 @@ REG_NOTE (CROSSING_JUMP)
/* This kind of note is generated at each to `setjmp', and similar
functions that can return twice. */
REG_NOTE (SETJMP)
/* Indicate calls that always returns. */
REG_NOTE (ALWAYS_RETURN)

3
gcc/rtl.h
View file

@ -2099,8 +2099,7 @@ enum libcall_type
LCT_PURE_MAKE_BLOCK = 4,
LCT_NORETURN = 5,
LCT_THROW = 6,
LCT_ALWAYS_RETURN = 7,
LCT_RETURNS_TWICE = 8
LCT_RETURNS_TWICE = 7
};
extern void emit_library_call (rtx, enum libcall_type, enum machine_mode, int,

4
gcc/tree-cfg.c
View file

@ -5327,7 +5327,7 @@ need_fake_edge_p (tree t)
tree call;
/* NORETURN and LONGJMP calls already have an edge to exit.
CONST, PURE and ALWAYS_RETURN calls do not need one.
CONST and PURE calls do not need one.
We don't currently check for CONST and PURE here, although
it would be a good idea, because those attributes are
figured out from the RTL in mark_constant_function, and
@ -5335,7 +5335,7 @@ need_fake_edge_p (tree t)
leads to different results from -fbranch-probabilities. */
call = get_call_expr_in (t);
if (call
&& !(call_expr_flags (call) & (ECF_NORETURN | ECF_ALWAYS_RETURN)))
&& !(call_expr_flags (call) & ECF_NORETURN))
return true;
if (TREE_CODE (t) == ASM_EXPR

4
gcc/tree.h
View file

@ -3688,10 +3688,8 @@ extern rtx emit_line_note (location_t);
/* Nonzero if this is a call to a function that returns with the stack
pointer depressed. */
#define ECF_SP_DEPRESSED 256
/* Nonzero if this call is known to always return. */
#define ECF_ALWAYS_RETURN 512
/* Create libcall block around the call. */
#define ECF_LIBCALL_BLOCK 1024
#define ECF_LIBCALL_BLOCK 512
extern int flags_from_decl_or_type (tree);
extern int call_expr_flags (tree);