+2008-11-01 Hans-Peter Nilsson <hp@axis.com>
+
+ PR target/37939
+ * config/cris/cris.c (cris_rtx_costs) <MULT>: Return 0 for an ADDI
+ operand.
+
2008-11-01 Richard Guenther <rguenther@suse.de>
PR middle-end/37976
return true;
case MULT:
+ /* If we have one arm of an ADDI, make sure it gets the cost of
+ one insn, i.e. zero cost for this operand, and just the cost
+ of the PLUS, as the insn is created by combine from a PLUS
+ and an ASHIFT, and the MULT cost below would make the
+ combined value be larger than the separate insns. The insn
+ validity is checked elsewhere by combine.
+
+ FIXME: this case is a stop-gap for 4.3 and 4.4, this whole
+ function should be rewritten. */
+ if (outer_code == PLUS && BIAP_INDEX_P (x))
+ {
+ *total = 0;
+ return true;
+ }
+
/* Identify values that are no powers of two. Powers of 2 are
taken care of already and those values should not be changed. */
if (!CONST_INT_P (XEXP (x, 1))