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[Bug target/49238] [4.5/4.6/4.7 Regression] [SH] ICE in extract_insn, at recog.c:2113


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49238

Kazumoto Kojima <kkojima at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |4.4.5
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|                            |2011.05.31 14:32:50
                 CC|                            |kkojima at gcc dot gnu.org
     Ever Confirmed|0                           |1
            Summary|ICE in extract_insn, at     |[4.5/4.6/4.7 Regression]
                   |recog.c:2113                |[SH] ICE in extract_insn,
                   |                            |at recog.c:2113
      Known to fail|                            |4.5.4, 4.6.0, 4.7.0

--- Comment #1 from Kazumoto Kojima <kkojima at gcc dot gnu.org> 2011-05-31 14:32:50 UTC ---
This might be a fallout of the patch in
http://gcc.gnu.org/ml/gcc-patches/2008-04/msg01211.html
I'm testing the patch below.

--- ORIG/trunk/gcc/config/sh/sh.c    2011-05-31 12:06:18.000000000 +0900
+++ trunk/gcc/config/sh/sh.c    2011-05-31 23:14:33.000000000 +0900
@@ -2199,6 +2199,13 @@ expand_cbranchdi4 (rtx *operands, enum r
     {
       operands[1] = op1h;
       operands[2] = op2h;
+      if (reload_completed
+          && ! arith_reg_or_0_operand (op2h, SImode)
+          && (true_regnum (op1h) || (comparison != EQ && comparison != NE)))
+        {
+          emit_move_insn (scratch, operands[2]);
+          operands[2] = scratch;
+        }
     }

       operands[3] = skip_label = gen_label_rtx ();


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