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rtlanal.c (replace_rtx): Don't make a CONST_INT the operand of SUBREG or ZERO_EXTEND. 

* rtlanal.c (replace_rtx): Don't make a CONST_INT the operand of
SUBREG or ZERO_EXTEND.

From-SVN: r49935
This commit is contained in:
Alexandre Oliva 2002-02-21 19:21:35 +00:00 committed by Alexandre Oliva
parent 287dd527bd
commit 9dd791c86c
2 changed files with 39 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
Thu Feb 21 16:20:46 2002 Alexandre Oliva <aoliva@redhat.com>
* rtlanal.c (replace_rtx): Don't make a CONST_INT the operand of
SUBREG or ZERO_EXTEND.
Thu Feb 21 15:35:46 2002 J"orn Rennecke <joern.rennecke@superh.com>
* sh.h (current_function_anonymous_args): Remove.

34
gcc/rtlanal.c
View File

@ -2417,6 +2417,40 @@ replace_rtx (x, from, to)
if (x == 0)
return 0;
if (GET_CODE (x) == SUBREG)
{
rtx new = replace_rtx (SUBREG_REG (x), from, to);
if (GET_CODE (new) == CONST_INT)
{
x = simplify_subreg (GET_MODE (x), new,
GET_MODE (SUBREG_REG (x)),
SUBREG_BYTE (x));
if (! x)
abort ();
}
else
SUBREG_REG (x) = new;
return x;
}
else if (GET_CODE (x) == ZERO_EXTEND)
{
rtx new = replace_rtx (XEXP (x, 0), from, to);
if (GET_CODE (new) == CONST_INT)
{
x = simplify_unary_operation (ZERO_EXTEND, GET_MODE (x),
new, GET_MODE (XEXP (x, 0)));
if (! x)
abort ();
}
else
XEXP (x, 0) = new;
return x;
}
fmt = GET_RTX_FORMAT (GET_CODE (x));
for (i = GET_RTX_LENGTH (GET_CODE (x)) - 1; i >= 0; i--)
{