FreeChainXenon/gcc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Fix v850 PlumHall testsuite failure.

Browse source 
* alias.c (record_set): Handle multi-reg hard registers.

From-SVN: r60474
This commit is contained in:
Jim Wilson 2002-12-24 15:49:24 +00:00 • committed by Jim Wilson
parent 14b493d64d
commit c28b4e4097
2 changed files with 21 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
gcc/ChangeLog
View file

@ -1,3 +1,7 @@
2002-12-24 Jim Wilson <wilson@redhat.com>
* alias.c (record_set): Handle multi-reg hard registers.
2002-12-24 Kazu Hirata <kazu@cs.umass.edu>
* regmove.c: Fix comment typos.

17
gcc/alias.c
View file

@ -932,6 +932,7 @@ record_set (dest, set, data)
{
unsigned regno;
rtx src;
int n;
if (GET_CODE (dest) != REG)
return;
@ -941,6 +942,22 @@ record_set (dest, set, data)
if (regno >= reg_base_value_size)
abort ();
/* If this spans multiple hard registers, then we must indicate that every
register has an unusable value. */
if (regno < FIRST_PSEUDO_REGISTER)
n = HARD_REGNO_NREGS (regno, GET_MODE (dest));
else
n = 1;
if (n != 1)
{
while (--n >= 0)
{
reg_seen[regno + n] = 1;
new_reg_base_value[regno + n] = 0;
}
return;
}
if (set)
{
/* A CLOBBER wipes out any old value but does not prevent a previously