[Bug rtl-optimization/34012] [4.3 Regression] Pessimization caused by fwprop

[bonzini at gnu dot org]

------- Comment #3 from bonzini at gnu dot org  2007-11-07 11:04 -------
Created an attachment (id=14495)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14495&action=view)
patch that fixes the bug


I'm not sure about the correctness of the i386.c hunk.  The problem is that a
cost of 0 is mapped by insn_rtx_cost to COSTS_N_INSNS(1) == 4.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34012