+2005-07-12 Dale Johannesen <dalej@apple.com>
+
+ * expr.c (compress_float_constant): Add cost check.
+ * config/rs6000.c (rs6000_rtx_cost): Adjust FLOAT_EXTEND cost.
+
+2005-07-12 Dale Johannesen <dalej@apple.com>
+
+ * gcc.target/i386/compress-float-sse.c: New.
+ * gcc.target/i386/compress-float-sse-pic.c: New.
+ * gcc.target/i386/compress-float-387.c: New.
+ * gcc.target/i386/compress-float-387-pic.c: New.
+ * gcc.dg/compress-float-ppc.c: New.
+ * gcc.dg/compress-float-ppc-pic.c: New.
+
2005-07-12 Eric Christopher <echristo@redhat.com>
* gcc.c (struct infile): Update comment for language.
enum machine_mode orig_srcmode = GET_MODE (y);
enum machine_mode srcmode;
REAL_VALUE_TYPE r;
+ int oldcost, newcost;
REAL_VALUE_FROM_CONST_DOUBLE (r, y);
+ if (LEGITIMATE_CONSTANT_P (y))
+ oldcost = rtx_cost (y, SET);
+ else
+ oldcost = rtx_cost (force_const_mem (dstmode, y), SET);
+
for (srcmode = GET_CLASS_NARROWEST_MODE (GET_MODE_CLASS (orig_srcmode));
srcmode != orig_srcmode;
srcmode = GET_MODE_WIDER_MODE (srcmode))
the extension. */
if (! (*insn_data[ic].operand[1].predicate) (trunc_y, srcmode))
continue;
+ /* This is valid, but may not be cheaper than the original. */
+ newcost = rtx_cost (gen_rtx_FLOAT_EXTEND (dstmode, trunc_y), SET);
+ if (oldcost < newcost)
+ continue;
}
else if (float_extend_from_mem[dstmode][srcmode])
- trunc_y = validize_mem (force_const_mem (srcmode, trunc_y));
+ {
+ trunc_y = force_const_mem (srcmode, trunc_y);
+ /* This is valid, but may not be cheaper than the original. */
+ newcost = rtx_cost (gen_rtx_FLOAT_EXTEND (dstmode, trunc_y), SET);
+ if (oldcost < newcost)
+ continue;
+ trunc_y = validize_mem (trunc_y);
+ }
else
continue;
-
+
emit_unop_insn (ic, x, trunc_y, UNKNOWN);
last_insn = get_last_insn ();