[Bug target/51106] [4.5/4.6/4.7 Regression] ICE in move_insn, at haifa-sched.c:2314

[abel at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51106

Andrey Belevantsev <abel at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |abel at gcc dot gnu.org,
                   |                            |jakub at gcc dot gnu.org

--- Comment #2 from Andrey Belevantsev <abel at gcc dot gnu.org> 2012-01-19 09:24:27 UTC ---
Well, the instantiate virtual regs pass just deletes the asm as having
impossible constraints and does not clean up cfg after itself.  As the asm is
actually a jump in this case, everything blows up.

The trivial patch below makes this work for -O[012].  Any other places in
function.c need patching up? Jakub, what do you think?

diff --git a/gcc/function.c b/gcc/function.c
index fcb79f5..94e51f4 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -1737,7 +1737,7 @@ instantiate_virtual_regs_in_insn (rtx insn)
       if (!check_asm_operands (PATTERN (insn)))
        {
          error_for_asm (insn, "impossible constraint in %<asm%>");
-         delete_insn (insn);
+         delete_insn_and_edges (insn);
        }
     }
   else