remove old+nonworking setting of ieee754 immediate precision

include/libfirm/tv.h

@@ -777,15 +777,6 @@ FIRM_API int tarval_ieee754_get_exponent(ir_tarval *tv);
  */
 FIRM_API int tarval_ieee754_can_conv_lossless(ir_tarval *tv, ir_mode *mode);
 
-/**
- * Set the immediate precision for IEEE-754 results. Set this to
- * 0 to get the same precision as the operands.
- * For x87 compatibility, set this to 80.
- *
- * @return the old setting
- */
-FIRM_API unsigned tarval_ieee754_set_immediate_precision(unsigned bits);
-
 /**
  *  Returns non-zero if the result of the last IEEE-754 operation was exact.
  */

ir/tv/fltcalc.c

@@ -136,9 +136,6 @@ struct fp_value {
 #  define TRACEPRINTF(x) ((void)0)
 #endif
 
-/** The immediate precision. */
-static unsigned immediate_prec = 0;
-
 /** A temporal buffer. */
 static fp_value *calc_buffer = NULL;
 
@@ -1578,15 +1575,6 @@ int fc_flt2int(const fp_value *a, void *result, ir_mode *dst_mode)
 	return 0;
 }
 
-
-unsigned fc_set_immediate_precision(unsigned bits)
-{
-	unsigned old = immediate_prec;
-
-	immediate_prec = bits;
-	return old;
-}
-
 int fc_is_exact(void)
 {
 	return fc_exact;

ir/tv/fltcalc.h

@@ -269,15 +269,6 @@ fc_rounding_mode_t fc_get_rounding_mode(void);
  */
 unsigned char fc_sub_bits(const fp_value *val, unsigned num_bit, unsigned byte_ofs);
 
-/**
- * Set the immediate precision for IEEE-754 results. Set this to
- * 0 to get the same precision as the operands.
- * For x87 compatibility, set this to 80.
- *
- * @return the old setting
- */
-unsigned fc_set_immediate_precision(unsigned bits);
-
 /**
  * Returns non-zero if the result of the last operation was exact.
  */

ir/tv/tv.c

@@ -1685,12 +1685,6 @@ int tarval_ieee754_can_conv_lossless(ir_tarval *tv, ir_mode *mode)
 	return fc_can_lossless_conv_to((const fp_value*) tv->value, desc);
 }
 
-/* Set the immediate precision for IEEE-754 results. */
-unsigned tarval_ieee754_set_immediate_precision(unsigned bits)
-{
-	return fc_set_immediate_precision(bits);
-}
-
 /* Returns non-zero if the result of the last IEEE-754 operation was exact. */
 unsigned tarval_ieee754_get_exact(void)
 {