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Fix v850 PlumHall testsuite failure.

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* 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
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4
gcc/ChangeLog
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@ -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> 2002-12-24 Kazu Hirata <kazu@cs.umass.edu>
* regmove.c: Fix comment typos. * regmove.c: Fix comment typos.

17
gcc/alias.c
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@ -932,6 +932,7 @@ record_set (dest, set, data)
{ {
unsigned regno; unsigned regno;
rtx src; rtx src;
int n;
if (GET_CODE (dest) != REG) if (GET_CODE (dest) != REG)
return; return;
@ -941,6 +942,22 @@ record_set (dest, set, data)
if (regno >= reg_base_value_size) if (regno >= reg_base_value_size)
abort (); 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) if (set)
{ {
/* A CLOBBER wipes out any old value but does not prevent a previously /* A CLOBBER wipes out any old value but does not prevent a previously