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df-scan.c (record_nonlocal_goto_receiver_defs): New function.

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* df-scan.c (record_nonlocal_goto_receiver_defs): New function.
	(df_refs_record): Call it.

From-SVN: r124283
This commit is contained in:
Zdenek Dvorak 2007-04-29 19:33:34 +02:00 committed by Zdenek Dvorak
parent 677e29e167
commit 268886f3b8
2 changed files with 34 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2007-04-29 Zdenek Dvorak <dvorakz@suse.cz>
* df-scan.c (record_nonlocal_goto_receiver_defs): New function.
(df_refs_record): Call it.
2007-04-29 Bernd Schmidt <bernd.schmidt@analog.com>
* rtl.def (SS_ABS): New code.

29
gcc/df-scan.c
View File

@ -1765,6 +1765,32 @@ df_bb_refs_record (struct dataflow *dflow, basic_block bb)
}
}
/* Records the implicit definitions at targets of nonlocal gotos in BLOCKS. */
static void
record_nonlocal_goto_receiver_defs (struct dataflow *dflow, bitmap blocks)
{
rtx x;
basic_block bb;
/* See expand_builtin_setjmp_receiver; hard_frame_pointer_rtx is used in
the nonlocal goto receiver, and needs to be considered defined
implicitly. */
if (!(dflow->flags & DF_HARD_REGS))
return;
for (x = nonlocal_goto_handler_labels; x; x = XEXP (x, 1))
{
bb = BLOCK_FOR_INSN (XEXP (x, 0));
if (!bitmap_bit_p (blocks, bb->index))
continue;
df_ref_record (dflow, hard_frame_pointer_rtx, &hard_frame_pointer_rtx,
bb, NULL,
DF_REF_REG_DEF, DF_REF_ARTIFICIAL | DF_REF_AT_TOP,
false);
}
}
/* Record all the refs in the basic blocks specified by BLOCKS. */
@ -1785,6 +1811,9 @@ df_refs_record (struct dataflow *dflow, bitmap blocks)
if (bitmap_bit_p (blocks, ENTRY_BLOCK))
df_record_entry_block_defs (dflow);
if (current_function_has_nonlocal_label)
record_nonlocal_goto_receiver_defs (dflow, blocks);
}