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Date: Mon, 01 Apr 2013 15:52:00 -0000
From: Marc Glisse <marc.glisse@inria.fr>
To: Richard Biener <richard.guenther@gmail.com>
cc: gcc-patches@gcc.gnu.org
Subject: Re: SLP for vectors
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On Sat, 30 Mar 2013, Marc Glisse wrote:

> 	* tree-flow-inline.h (get_addr_base_and_unit_offset_1): Handle
> 	BIT_FIELD_REF.

I wrote a safer version of this for PR52436:


  	case BIT_FIELD_REF:
-	  return NULL_TREE;
+	  {
+	    HOST_WIDE_INT this_off = TREE_INT_CST_LOW (TREE_OPERAND (exp, 2));
+	    if (this_off % BITS_PER_UNIT)
+	      return NULL_TREE;
+	    byte_offset += this_off / BITS_PER_UNIT;
+	  }
+	  break;