* config/i386/i386.c (ix86_rtx_costs) [FLOAT_EXTEND]: For
standard 80387 constants, raise the cost to prevent
compress_float_constant() to generate load from memory.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@113622
138bc75d-0d04-0410-961f-
82ee72b054a4
+2006-05-08 Uros Bizjak <uros@kss-loka.si>
+
+ PR target/27277
+ * config/i386/i386.c (ix86_rtx_costs) [FLOAT_EXTEND]: For
+ standard 80387 constants, raise the cost to prevent
+ compress_float_constant() to generate load from memory.
+
2006-05-08 Kazu Hirata <kazu@codesourcery.com>
* config/arm/constraints.md (c): Fix a typo.
if (!TARGET_SSE_MATH
|| mode == XFmode
|| (mode == DFmode && !TARGET_SSE2))
- *total = 0;
+ /* For standard 80387 constants, raise the cost to prevent
+ compress_float_constant() to generate load from memory. */
+ switch (standard_80387_constant_p (XEXP (x, 0)))
+ {
+ case -1:
+ case 0:
+ *total = 0;
+ break;
+ case 1: /* 0.0 */
+ *total = 1;
+ break;
+ default:
+ *total = (x86_ext_80387_constants & TUNEMASK
+ || optimize_size
+ ? 1 : 0);
+ }
return false;
case ABS: