[Bug rtl-optimization/23980] [3.4 Regression] THUMB basic block reordering incorrectly redirects non-simple cond-jump->fallthru

[rearnsha at gcc dot gnu dot org]

------- Comment #7 from rearnsha at gcc dot gnu dot org  2005-10-07 17:10 
-------
The problem here is that we have a complex compare-and-jump insn with side
effects, so the insn can't be simply removed.  cfgrtl is getting confused and
is generating code that references a deleted label.


-- 

rearnsha at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rearnsha at gcc dot gnu dot
                   |                            |org
          Component|target                      |rtl-optimization
   GCC host triplet|i386-unknown-linux          |
            Summary|Bad assembly output in Thumb|[3.4 Regression] THUMB basic
                   |mode with -O2               |block reordering incorrectly
                   |                            |redirects non-simple cond-
                   |                            |jump->fallthru


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23980