From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon, 3 Feb 2014 15:06:31 +0000 (+0000)
Subject: Check if mode is OK first
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ee331bc71d3c8f8442eafc15703ea1debfff11ea;p=thirdparty%2Fgcc.git

Check if mode is OK first

	PR rtl-optimization/60024
	* sel-sched.c (init_regs_for_mode): Check if mode is OK first.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@207427 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c5f8d356849d..e6df43b80f57 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2014-02-03  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR rtl-optimization/60024
+	* sel-sched.c (init_regs_for_mode): Check if mode is OK first.
+
 2014-02-03  Markus Trippelsdorf  <markus@trippelsdorf.de>
 
 	* doc/invoke.texi: (fprofile-reorder-functions): Fix typo.
diff --git a/gcc/sel-sched.c b/gcc/sel-sched.c
index d3d73b2b188b..490f3610aea2 100644
--- a/gcc/sel-sched.c
+++ b/gcc/sel-sched.c
@@ -1116,9 +1116,16 @@ init_regs_for_mode (enum machine_mode mode)
 
   for (cur_reg = 0; cur_reg < FIRST_PSEUDO_REGISTER; cur_reg++)
     {
-      int nregs = hard_regno_nregs[cur_reg][mode];
+      int nregs;
       int i;
 
+      /* See whether it accepts all modes that occur in
+         original insns.  */
+      if (! HARD_REGNO_MODE_OK (cur_reg, mode))
+        continue;
+
+      nregs = hard_regno_nregs[cur_reg][mode];
+
       for (i = nregs - 1; i >= 0; --i)
         if (fixed_regs[cur_reg + i]
                 || global_regs[cur_reg + i]
@@ -1140,11 +1147,6 @@ init_regs_for_mode (enum machine_mode mode)
       if (i >= 0)
         continue;
 
-      /* See whether it accepts all modes that occur in
-         original insns.  */
-      if (! HARD_REGNO_MODE_OK (cur_reg, mode))
-        continue;
-
       if (HARD_REGNO_CALL_PART_CLOBBERED (cur_reg, mode))
         SET_HARD_REG_BIT (sel_hrd.regs_for_call_clobbered[mode],
                           cur_reg);