Re: PATCH: Change maybe_eh_return to bool

["H.J. Lu" <hjl dot tools at gmail dot com>]

On Thu, May 12, 2011 at 2:09 PM, Uros Bizjak <ubizjak@gmail.com> wrote:
>
> FWIW, the return type of ix86_save_reg (and ix86_hard_regno_mode_ok
> and perhaps many others...) can also be changed to bool.

This patch changes the return type of ix86_save_reg to bool and return
value of ix86_hard_regno_mode_ok to bool.

OK for trunk?

Thanks.

-- 
H.J.
---
2011-05-12  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386.c (ix86_save_reg): Change return type to
	bool.
	(ix86_hard_regno_mode_ok): Change return value to bool.

2011-05-12  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386.c (ix86_save_reg): Change return type to
	bool.
	(ix86_hard_regno_mode_ok): Change return value to bool.

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 357e57c..c06b45d 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -9065,7 +9065,7 @@ ix86_select_alt_pic_regnum (void)
 }
 
 /* Return 1 if we need to save REGNO.  */
-static int
+static bool
 ix86_save_reg (unsigned int regno, bool maybe_eh_return)
 {
   if (pic_offset_table_rtx
@@ -9074,11 +9074,7 @@ ix86_save_reg (unsigned int regno, bool maybe_eh_return)
 	  || crtl->profile
 	  || crtl->calls_eh_return
 	  || crtl->uses_const_pool))
-    {
-      if (ix86_select_alt_pic_regnum () != INVALID_REGNUM)
-	return 0;
-      return 1;
-    }
+    return ix86_select_alt_pic_regnum () == INVALID_REGNUM;
 
   if (crtl->calls_eh_return && maybe_eh_return)
     {
@@ -9089,12 +9085,12 @@ ix86_save_reg (unsigned int regno, bool maybe_eh_return)
 	  if (test == INVALID_REGNUM)
 	    break;
 	  if (test == regno)
-	    return 1;
+	    return true;
 	}
     }
 
   if (crtl->drap_reg && regno == REGNO (crtl->drap_reg))
-    return 1;
+    return true;
 
   return (df_regs_ever_live_p (regno)
 	  && !call_used_regs[regno]
@@ -29010,7 +29006,7 @@ ix86_hard_regno_mode_ok (int regno, enum machine_mode mode)
   if (GET_MODE_CLASS (mode) == MODE_CC
       || GET_MODE_CLASS (mode) == MODE_RANDOM
       || GET_MODE_CLASS (mode) == MODE_PARTIAL_INT)
-    return 0;
+    return false;
   if (FP_REGNO_P (regno))
     return VALID_FP_MODE_P (mode);
   if (SSE_REGNO_P (regno))
@@ -29040,26 +29036,26 @@ ix86_hard_regno_mode_ok (int regno, enum machine_mode mode)
       /* Take care for QImode values - they can be in non-QI regs,
 	 but then they do cause partial register stalls.  */
       if (regno <= BX_REG || TARGET_64BIT)
-	return 1;
+	return true;
       if (!TARGET_PARTIAL_REG_STALL)
-	return 1;
-      return reload_in_progress || reload_completed;
+	return true;
+      return reload_in_progress != 0 || reload_completed != 0;
     }
   /* We handle both integer and floats in the general purpose registers.  */
   else if (VALID_INT_MODE_P (mode))
-    return 1;
+    return true;
   else if (VALID_FP_MODE_P (mode))
-    return 1;
+    return true;
   else if (VALID_DFP_MODE_P (mode))
-    return 1;
+    return true;
   /* Lots of MMX code casts 8 byte vector modes to DImode.  If we then go
      on to use that value in smaller contexts, this can easily force a
      pseudo to be allocated to GENERAL_REGS.  Since this is no worse than
      supporting DImode, allow it.  */
   else if (VALID_MMX_REG_MODE_3DNOW (mode) || VALID_MMX_REG_MODE (mode))
-    return 1;
+    return true;
 
-  return 0;
+  return false;
 }
 
 /* A subroutine of ix86_modes_tieable_p.  Return true if MODE is a