From: Alexandre Oliva <aoliva@redhat.com>
Date: Sat, 2 Apr 2005 16:56:27 +0000 (+0000)
Subject: re PR middle-end/20491 (internal compiler error: in subreg_regno_offset, at rtlanal... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=bbe3791247584e9b520a0a7afdc14acea321678a;p=gcc.git

re PR middle-end/20491 (internal compiler error: in subreg_regno_offset, at rtlanal.c:3042)

PR middle-end/20491
* final.c (alter_subreg): Don't call subreg_regno for a non-REG.

From-SVN: r97444
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f9f53e008cf..d03fcf914f2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2005-04-02  Alexandre Oliva  <aoliva@redhat.com>
+
+	PR middle-end/20491
+	* final.c (alter_subreg): Don't call subreg_regno for a non-REG.
+
 2005-04-02  Alexandre Oliva  <aoliva@redhat.com>
 
 	PR rtl-optimization/20290
diff --git a/gcc/final.c b/gcc/final.c
index ea842550cfb..aee4ea973fd 100644
--- a/gcc/final.c
+++ b/gcc/final.c
@@ -2547,11 +2547,10 @@ alter_subreg (rtx *xp)
 
       if (new != 0)
 	*xp = new;
-      else
+      else if (REG_P (y))
 	{
 	  /* Simplify_subreg can't handle some REG cases, but we have to.  */
 	  unsigned int regno = subreg_regno (x);
-	  gcc_assert (REG_P (y));
 	  *xp = gen_rtx_REG_offset (y, GET_MODE (x), regno, SUBREG_BYTE (x));
 	}
     }