Index: fold-const.c
===================================================================
--- fold-const.c	(revision 177075)
+++ fold-const.c	(working copy)
@@ -7037,8 +7037,7 @@ fold_plusminus_mult_expr (location_t loc, enum tre
       int11 = TREE_INT_CST_LOW (arg11);
 
       /* Move min of absolute values to int11.  */
-      if ((int01 >= 0 ? int01 : -int01)
-	  < (int11 >= 0 ? int11 : -int11))
+      if (abs_hwi (int01) < abs_hwi (int11))
         {
 	  tmp = int01, int01 = int11, int11 = tmp;
 	  alt0 = arg00, arg00 = arg10, arg10 = alt0;
@@ -7048,7 +7047,7 @@ fold_plusminus_mult_expr (location_t loc, enum tre
       else
 	maybe_same = arg11;
 
-      if (exact_log2 (abs (int11)) > 0 && int01 % int11 == 0
+      if (exact_log2 (abs_hwi (int11)) > 0 && int01 % int11 == 0
 	  /* The remainder should not be a constant, otherwise we
 	     end up folding i * 4 + 2 to (i * 2 + 1) * 2 which has
 	     increased the number of multiplications necessary.  */
Index: tree-ssa-math-opts.c
===================================================================
--- tree-ssa-math-opts.c	(revision 177075)
+++ tree-ssa-math-opts.c	(working copy)
@@ -1231,9 +1231,10 @@ gimple_expand_builtin_pow (gimple_stmt_iterator *g
       /* Attempt to fold powi(arg0, abs(n/2)) into multiplies.  If not
          possible or profitable, give up.  Skip the degenerate case when
          n is 1 or -1, where the result is always 1.  */
-      if (abs (n) != 1)
+      if (abs_hwi (n) != 1)
 	{
-	  powi_x_ndiv2 = gimple_expand_builtin_powi (gsi, loc, arg0, abs(n/2));
+	  powi_x_ndiv2 = gimple_expand_builtin_powi (gsi, loc, arg0,
+						     abs_hwi (n / 2));
 	  if (!powi_x_ndiv2)
 	    return NULL_TREE;
 	}
@@ -1242,7 +1243,7 @@ gimple_expand_builtin_pow (gimple_stmt_iterator *g
 	 result of the optimal multiply sequence just calculated.  */
       sqrt_arg0 = build_and_insert_call (gsi, loc, &target, sqrtfn, arg0);
 
-      if (abs (n) == 1)
+      if (abs_hwi (n) == 1)
 	result = sqrt_arg0;
       else
 	result = build_and_insert_binop (gsi, loc, target, MULT_EXPR,
@@ -1284,10 +1285,10 @@ gimple_expand_builtin_pow (gimple_stmt_iterator *g
       /* Attempt to fold powi(arg0, abs(n/3)) into multiplies.  If not
          possible or profitable, give up.  Skip the degenerate case when
          abs(n) < 3, where the result is always 1.  */
-      if (abs (n) >= 3)
+      if (abs_hwi (n) >= 3)
 	{
 	  powi_x_ndiv3 = gimple_expand_builtin_powi (gsi, loc, arg0,
-						     abs (n / 3));
+						     abs_hwi (n / 3));
 	  if (!powi_x_ndiv3)
 	    return NULL_TREE;
 	}
@@ -1297,14 +1298,14 @@ gimple_expand_builtin_pow (gimple_stmt_iterator *g
          either cbrt(x) or cbrt(x) * cbrt(x).  */
       cbrt_x = build_and_insert_call (gsi, loc, &target, cbrtfn, arg0);
 
-      if (abs (n) % 3 == 1)
+      if (abs_hwi (n) % 3 == 1)
 	powi_cbrt_x = cbrt_x;
       else
 	powi_cbrt_x = build_and_insert_binop (gsi, loc, target, MULT_EXPR,
 					      cbrt_x, cbrt_x);
 
       /* Multiply the two subexpressions, unless powi(x,abs(n)/3) = 1.  */
-      if (abs (n) < 3)
+      if (abs_hwi (n) < 3)
 	result = powi_cbrt_x;
       else
 	result = build_and_insert_binop (gsi, loc, target, MULT_EXPR,
Index: tree-ssa-loop-prefetch.c
===================================================================
--- tree-ssa-loop-prefetch.c	(revision 177075)
+++ tree-ssa-loop-prefetch.c	(working copy)
@@ -1,5 +1,6 @@
 /* Array prefetching.
-   Copyright (C) 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
+   Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -794,7 +795,7 @@ prune_ref_by_group_reuse (struct mem_ref *ref, str
       prefetch_before = (hit_from - delta_r + step - 1) / step;
 
       /* Do not reduce prefetch_before if we meet beyond cache size.  */
-      if (prefetch_before > (unsigned) abs (L2_CACHE_SIZE_BYTES / step))
+      if (prefetch_before > (unsigned) abs_hwi (L2_CACHE_SIZE_BYTES / step))
         prefetch_before = PREFETCH_ALL;
       if (prefetch_before < ref->prefetch_before)
 	ref->prefetch_before = prefetch_before;
