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(simplify_unary_operation): Clean up some mode and size checks with 

CONST_DOUBLEs; TRUNCATE should do nothing.

From-SVN: r7853
This commit is contained in:
Richard Kenner 1994-08-02 19:06:41 -04:00
parent 3adde2a5c6
commit 8e0ac43b33
1 changed files with 6 additions and 6 deletions
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12
gcc/cse.c
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@ -3086,7 +3086,7 @@ simplify_unary_operation (code, mode, op, op_mode)
/* We can do some operations on integer CONST_DOUBLEs. Also allow
for a DImode operation on a CONST_INT. */
else if (GET_MODE (op) == VOIDmode && width == HOST_BITS_PER_INT * 2
else if (GET_MODE (op) == VOIDmode && width <= HOST_BITS_PER_INT * 2
&& (GET_CODE (op) == CONST_DOUBLE || GET_CODE (op) == CONST_INT))
{
HOST_WIDE_INT l1, h1, lv, hv;
@ -3123,10 +3123,7 @@ simplify_unary_operation (code, mode, op, op_mode)
break;
case TRUNCATE:
if (GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT)
return GEN_INT (l1 & GET_MODE_MASK (mode));
else
return 0;
/* This is just a change-of-mode, so do nothing. */
break;
case ZERO_EXTEND:
@ -3220,7 +3217,10 @@ simplify_unary_operation (code, mode, op, op_mode)
set_float_handler (NULL_PTR);
return x;
}
else if (GET_CODE (op) == CONST_DOUBLE && GET_MODE_CLASS (mode) == MODE_INT
else if (GET_CODE (op) == CONST_DOUBLE
&& GET_MODE_CLASS (GET_MODE (op)) == MODE_FLOAT
&& GET_MODE_CLASS (mode) == MODE_INT
&& width <= HOST_BITS_PER_WIDE_INT && width > 0)
{
REAL_VALUE_TYPE d;