emit-rtl.c (set_mem_attributes): Alignment is in bits.

	* emit-rtl.c (set_mem_attributes): Alignment is in bits.
	(adjust_address_1, offset_address): Likewise.

From-SVN: r46378

gcc/ChangeLog

 Sat Oct 20 07:27:14 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
+	* emit-rtl.c (set_mem_attributes): Alignment is in bits.
+	(adjust_address_1, offset_address): Likewise.
+
 	* final.c (output_asm_operand_names): New fcn, from output_asm_insn.
 	(output_asm_insn): Call it for each line output.
 	Don't record an operand more than once.

gcc/emit-rtl.c

@@ -1717,7 +1717,7 @@ set_mem_attributes (ref, t, objectp)
 
   /* If this is an INDIRECT_REF, we know its alignment.  */
   if (TREE_CODE (t) == INDIRECT_REF)
-    set_mem_align (ref, TYPE_ALIGN (type) / BITS_PER_UNIT);
+    set_mem_align (ref, TYPE_ALIGN (type));
 
   /* Now see if we can say more about whether it's an aggregate or
      scalar.  If we already know it's an aggregate, don't bother.  */
@@ -1752,7 +1752,7 @@ set_mem_alias_set (mem, set)
 				   MEM_SIZE (mem), MEM_ALIGN (mem));
 }
 
-/* Set the alignment of MEM to ALIGN.  */
+/* Set the alignment of MEM to ALIGN bits.  */
 
 void
 set_mem_align (mem, align)
@@ -1866,7 +1866,7 @@ adjust_address_1 (memref, mode, offset, validate)
      lowest-order set bit in OFFSET, but don't change the alignment if OFFSET
      if zero.  */
   if (offset != 0)
-    memalign = MIN (memalign, offset & -offset);
+    memalign = MIN (memalign, (offset & -offset) * BITS_PER_UNIT);
 
   MEM_ATTRS (new)
     = get_mem_attrs (MEM_ALIAS_SET (memref), MEM_DECL (memref), memoffset,
@@ -1896,7 +1896,8 @@ offset_address (memref, offset, pow2)
   /* Update the alignment to reflect the offset.  Reset the offset, which
      we don't know.  */
   MEM_ATTRS (new) = get_mem_attrs (MEM_ALIAS_SET (memref), MEM_DECL (memref),
-				   0, 0, MIN (MEM_ALIGN (memref), pow2));
+				   0, 0, MIN (MEM_ALIGN (memref),
+					      pow2 * BITS_PER_UNIT));
   return new;
 }
   

gcc/expr.h

@@ -612,7 +612,7 @@ extern rtx memory_address_noforce PARAMS ((enum machine_mode, rtx));
 /* Set the alias set of MEM to SET.  */
 extern void set_mem_alias_set PARAMS ((rtx, HOST_WIDE_INT));
 
-/* Set the alignment of MEM to ALIGN.  */
+/* Set the alignment of MEM to ALIGN bits.  */
 extern void set_mem_align PARAMS ((rtx, unsigned int));
 
 /* Return a memory reference like MEMREF, but with its mode changed

gcc/rtl.h

@@ -95,7 +95,7 @@ typedef struct
   tree decl;			/* decl corresponding to MEM.  */
   rtx offset;			/* Offset from start of DECL, as CONST_INT.  */
   rtx size;			/* Size in bytes, as a CONST_INT.  */
-  unsigned int align;		/* Alignment of MEM in bytes.  */
+  unsigned int align;		/* Alignment of MEM in bits.  */
 } mem_attrs;
 
 /* Common union for an element of an rtx.  */
@@ -912,7 +912,7 @@ extern unsigned int subreg_regno 	PARAMS ((rtx));
    is always a CONST_INT.  */
 #define MEM_SIZE(RTX) (MEM_ATTRS (RTX) == 0 ? 0 : MEM_ATTRS (RTX)->size)
 
-/* For a MEM rtx, the alignment in bytes.  */
+/* For a MEM rtx, the alignment in bits.  */
 #define MEM_ALIGN(RTX) (MEM_ATTRS (RTX) == 0 ? 1 : MEM_ATTRS (RTX)->align)
 
 /* Copy the attributes that apply to memory locations from RHS to LHS.  */