OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

regrename.c (find_oldest_value_reg): If the replacement uses multiple hard registers... 

* regrename.c (find_oldest_value_reg): If the replacement uses
multiple hard registers, check that all of them are in CLASS.

From-SVN: r75867
This commit is contained in:
Richard Earnshaw 2004-01-14 16:25:09 +00:00 committed by Richard Earnshaw
parent e7844ffbe7
commit 684bcee536
2 changed files with 18 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2004-01-14 Richard Earnshaw <rearnsha@arm.com>
* regrename.c (find_oldest_value_reg): If the replacement uses
multiple hard registers, check that all of them are in CLASS.
2004-01-14 Jan Hubicka <jh@suse.cz>
* alias.c (get_alias_set): Initialize alias set to 0 when subset is

22
gcc/regrename.c
View File

@ -1,5 +1,5 @@
/* Register renaming for the GNU compiler.
Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Copyright (C) 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
@ -1339,15 +1339,19 @@ find_oldest_value_reg (enum reg_class class, rtx reg, struct value_data *vd)
{
enum machine_mode oldmode = vd->e[i].mode;
rtx new;
unsigned int last;
if (TEST_HARD_REG_BIT (reg_class_contents[class], i)
&& (new = maybe_mode_change (oldmode, vd->e[regno].mode, mode, i,
regno)))
{
ORIGINAL_REGNO (new) = ORIGINAL_REGNO (reg);
REG_ATTRS (new) = REG_ATTRS (reg);
return new;
}
for (last = i; last < i + HARD_REGNO_NREGS (i, mode); last++)
if (!TEST_HARD_REG_BIT (reg_class_contents[class], last))
return NULL_RTX;
if (new = maybe_mode_change (oldmode, vd->e[regno].mode, mode, i,
regno))
{
ORIGINAL_REGNO (new) = ORIGINAL_REGNO (reg);
REG_ATTRS (new) = REG_ATTRS (reg);
return new;
}
}
return NULL_RTX;