[Bug rtl-optimization/19579] [3.3/3.4/4.0 regression] -march=i686 generates a bogus program for x86*

[jakub at gcc dot gnu dot org]

------- Additional Comments From jakub at gcc dot gnu dot org  2005-01-24 10:30 -------
Regarding the question in #11:
LOG_LINKS only point to instructions in the same basic block:
/* Set up in flow.c; empty before then.
   Holds a chain of INSN_LIST rtx's whose first operands point at
   previous insns with direct data-flow connections to this one.
   That means that those insns set variables whose next use is in this insn.
   They are always in the same basic block as this insn.  */
#define LOG_LINKS(INSN) XEXP(INSN, 7)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19579