[ARM][cleanup] Simplify some expressions in some epilogue-related functions

	* config/arm/arm.c (arm_emit_multi_reg_pop): Simplify definition of
	return_in_pc.  Remove redundant assignments.
	(thumb2_emit_ldrd_pop): Simplify definition of return_in_pc.
	(arm_expand_epilogue): Don't compare boolean with true in if condition.

From-SVN: r220246

gcc/ChangeLog

+2015-01-29  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* config/arm/arm.c (arm_emit_multi_reg_pop): Simplify definition of
+	return_in_pc.  Remove redundant assignments.
+	(thumb2_emit_ldrd_pop): Simplify definition of return_in_pc.
+	(arm_expand_epilogue): Don't compare boolean with true in if condition.
+
 2015-01-29  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.c (ix86_mode_after): Make static.

gcc/config/arm/arm.c

@@ -20273,11 +20273,10 @@ arm_emit_multi_reg_pop (unsigned long saved_regs_mask)
   rtx par;
   rtx dwarf = NULL_RTX;
   rtx tmp, reg;
-  bool return_in_pc;
+  bool return_in_pc = saved_regs_mask & (1 << PC_REGNUM);
   int offset_adj;
   int emit_update;
 
-  return_in_pc = (saved_regs_mask & (1 << PC_REGNUM)) ? true : false;
   offset_adj = return_in_pc ? 1 : 0;
   for (i = 0; i <= LAST_ARM_REGNUM; i++)
     if (saved_regs_mask & (1 << i))
@@ -20293,10 +20292,7 @@ arm_emit_multi_reg_pop (unsigned long saved_regs_mask)
   par = gen_rtx_PARALLEL (VOIDmode, rtvec_alloc (num_regs + emit_update + offset_adj));
 
   if (return_in_pc)
-    {
-      tmp = ret_rtx;
-      XVECEXP (par, 0, 0) = tmp;
-    }
+    XVECEXP (par, 0, 0) = ret_rtx;
 
   if (emit_update)
     {
@@ -20446,9 +20442,8 @@ thumb2_emit_ldrd_pop (unsigned long saved_regs_mask)
   rtx par = NULL_RTX;
   rtx dwarf = NULL_RTX;
   rtx tmp, reg, tmp1;
-  bool return_in_pc;
+  bool return_in_pc = saved_regs_mask & (1 << PC_REGNUM);
 
-  return_in_pc = (saved_regs_mask & (1 << PC_REGNUM)) ? true : false;
   for (i = 0; i <= LAST_ARM_REGNUM; i++)
     if (saved_regs_mask & (1 << i))
       num_regs++;
@@ -25230,7 +25225,7 @@ arm_expand_epilogue (bool really_return)
             arm_emit_multi_reg_pop (saved_regs_mask);
         }
 
-      if (return_in_pc == true)
+      if (return_in_pc)
         return;
     }