PATCH: PR bootstrap/53555: [4.8 Regression] Bootstrap failure

[H.J. Lu]

Hi,

ix86_sched_reorder should skip debug insns.  Tested on Linux/ia32.
OK to install?

Thanks.

H.J.
---
2012-06-02  H.J. Lu  <hongjiu...@intel.com>

        PR bootstrap/53555
        * config/i386/i386.c (ix86_sched_reorder) Skip debug insns.

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index c6c2c5e..13755f4 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -23919,6 +23919,8 @@ ix86_sched_reorder(FILE *dump, int sched_verbose, rtx 
*ready, int *pn_ready,
         {
           rtx con;
          con = DEP_CON (dep);
+         if (!NONDEBUG_INSN_P (con))
+           continue;
           insn1 = PATTERN (con);
           if (GET_CODE (insn1) == PARALLEL)
             insn1 = XVECEXP (insn1, 0, 0);
@@ -23935,6 +23937,8 @@ ix86_sched_reorder(FILE *dump, int sched_verbose, rtx 
*ready, int *pn_ready,
                 {
                   rtx pro;
                   pro = DEP_PRO (dep1);
+                 if (!NONDEBUG_INSN_P (pro))
+                   continue;
                   if (pro != insn)
                     index = -1;
                }