PATCH: PR rtl-optimization/44326: NONDEBUG_INSN_P should be used in implicit-zee.c

[H.J. Lu]

Hi,

When searching removable zero extends, there is no need to exam debug
insns.  Tested on Linux/x86-64.   OK to install?

Thanks.


H.J.
---
2010-06-25  H.J. Lu  <hongjiu.lu@intel.com>

	PR rtl-optimization/44326
	* implicit-zee.c (find_removable_zero_extends): Replace
	INSN_P with NONDEBUG_INSN_P.

diff --git a/gcc/implicit-zee.c b/gcc/implicit-zee.c
index 3344d7f..46029cd 100644
--- a/gcc/implicit-zee.c
+++ b/gcc/implicit-zee.c
@@ -858,7 +858,7 @@ find_removable_zero_extends (void)
     {
       FOR_BB_INSNS (curr_block, curr_insn)
         {
-          if (!INSN_P (curr_insn))
+          if (!NONDEBUG_INSN_P (curr_insn))
             continue;
 
           type = for_each_rtx (&PATTERN (curr_insn),