From: Tom de Vries <tom@codesourcery.com>
Date: Mon, 19 Nov 2012 09:35:48 +0000 (+0000)
Subject: re PR rtl-optimization/55315 (comparing address to constant is folded in cse)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=bc2164e876329706b17f646bcc2860100a569006;p=gcc.git

re PR rtl-optimization/55315 (comparing address to constant is folded in cse)

2012-11-19  Tom de Vries  <tom@codesourcery.com>

	PR rtl-optimization/55315

	* rtlanal.c (nonzero_address_p): Don't assume a nonzero address plus a
	const is a nonzero address.

From-SVN: r193616
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0efb46c2f80..e7c797ce231 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2012-11-19  Tom de Vries  <tom@codesourcery.com>
+
+	PR rtl-optimization/55315
+
+	* rtlanal.c (nonzero_address_p): Don't assume a nonzero address plus a
+	const is a nonzero address.
+
 2012-11-18  Sandra Loosemore  <sandra@codesourcery.com>
 
 	* doc/extend.texi: Use @smallexample consistently.  Add @noindent
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 33be5487386..ecfae4ce9d5 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -392,10 +392,8 @@ nonzero_address_p (const_rtx x)
       return nonzero_address_p (XEXP (x, 0));
 
     case PLUS:
-      if (CONST_INT_P (XEXP (x, 1)))
-        return nonzero_address_p (XEXP (x, 0));
       /* Handle PIC references.  */
-      else if (XEXP (x, 0) == pic_offset_table_rtx
+      if (XEXP (x, 0) == pic_offset_table_rtx
 	       && CONSTANT_P (XEXP (x, 1)))
 	return true;
       return false;