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re PR bootstrap/49914 (call to abs(long long) in gcc/fold-const.c) 

2011-08-02  Paolo Carlini  <paolo.carlini@oracle.com>

	PR bootstrap/49914
	* fold-const.c (fold_plusminus_mult_expr): Use abs_hwi instead
	of abs.
	* tree-ssa-math-opts.c (gimple_expand_builtin_pow): Likewise.
	* tree-ssa-loop-prefetch.c (prune_ref_by_group_reuse): Likewise.

From-SVN: r177212
This commit is contained in:
Paolo Carlini 2011-08-02 20:26:57 +00:00 committed by Paolo Carlini
parent f315a6b438
commit 9f8139900d
4 changed files with 21 additions and 12 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2011-08-02 Paolo Carlini <paolo.carlini@oracle.com>
PR bootstrap/49914
* fold-const.c (fold_plusminus_mult_expr): Use abs_hwi instead
of abs.
* tree-ssa-math-opts.c (gimple_expand_builtin_pow): Likewise.
* tree-ssa-loop-prefetch.c (prune_ref_by_group_reuse): Likewise.
2011-08-02 Richard Henderson <rth@redhat.com> 2011-08-02 Richard Henderson <rth@redhat.com>
* config/h8300/h8300.c (push, pop): Return the insn. * config/h8300/h8300.c (push, pop): Return the insn.

5
gcc/fold-const.c
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@ -7037,8 +7037,7 @@ fold_plusminus_mult_expr (location_t loc, enum tree_code code, tree type,
int11 = TREE_INT_CST_LOW (arg11); int11 = TREE_INT_CST_LOW (arg11);
/* Move min of absolute values to int11. */ /* Move min of absolute values to int11. */
if ((int01 >= 0 ? int01 : -int01) if (abs_hwi (int01) < abs_hwi (int11))
< (int11 >= 0 ? int11 : -int11))
{ {
tmp = int01, int01 = int11, int11 = tmp; tmp = int01, int01 = int11, int11 = tmp;
alt0 = arg00, arg00 = arg10, arg10 = alt0; alt0 = arg00, arg00 = arg10, arg10 = alt0;
@ -7048,7 +7047,7 @@ fold_plusminus_mult_expr (location_t loc, enum tree_code code, tree type,
else else
maybe_same = arg11; 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 /* The remainder should not be a constant, otherwise we
end up folding i * 4 + 2 to (i * 2 + 1) * 2 which has end up folding i * 4 + 2 to (i * 2 + 1) * 2 which has
increased the number of multiplications necessary. */ increased the number of multiplications necessary. */

5
gcc/tree-ssa-loop-prefetch.c
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@ -1,5 +1,6 @@
/* Array prefetching. /* 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. This file is part of GCC.
@ -794,7 +795,7 @@ prune_ref_by_group_reuse (struct mem_ref *ref, struct mem_ref *by,
prefetch_before = (hit_from - delta_r + step - 1) / step; prefetch_before = (hit_from - delta_r + step - 1) / step;
/* Do not reduce prefetch_before if we meet beyond cache size. */ /* 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; prefetch_before = PREFETCH_ALL;
if (prefetch_before < ref->prefetch_before) if (prefetch_before < ref->prefetch_before)
ref->prefetch_before = prefetch_before; ref->prefetch_before = prefetch_before;

15
gcc/tree-ssa-math-opts.c
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@ -1231,9 +1231,10 @@ gimple_expand_builtin_pow (gimple_stmt_iterator *gsi, location_t loc,
/* Attempt to fold powi(arg0, abs(n/2)) into multiplies. If not /* Attempt to fold powi(arg0, abs(n/2)) into multiplies. If not
possible or profitable, give up. Skip the degenerate case when possible or profitable, give up. Skip the degenerate case when
n is 1 or -1, where the result is always 1. */ 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) if (!powi_x_ndiv2)
return NULL_TREE; return NULL_TREE;
} }
@ -1242,7 +1243,7 @@ gimple_expand_builtin_pow (gimple_stmt_iterator *gsi, location_t loc,
result of the optimal multiply sequence just calculated. */ result of the optimal multiply sequence just calculated. */
sqrt_arg0 = build_and_insert_call (gsi, loc, &target, sqrtfn, arg0); sqrt_arg0 = build_and_insert_call (gsi, loc, &target, sqrtfn, arg0);
if (abs (n) == 1) if (abs_hwi (n) == 1)
result = sqrt_arg0; result = sqrt_arg0;
else else
result = build_and_insert_binop (gsi, loc, target, MULT_EXPR, result = build_and_insert_binop (gsi, loc, target, MULT_EXPR,
@ -1284,10 +1285,10 @@ gimple_expand_builtin_pow (gimple_stmt_iterator *gsi, location_t loc,
/* Attempt to fold powi(arg0, abs(n/3)) into multiplies. If not /* Attempt to fold powi(arg0, abs(n/3)) into multiplies. If not
possible or profitable, give up. Skip the degenerate case when possible or profitable, give up. Skip the degenerate case when
abs(n) < 3, where the result is always 1. */ 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, powi_x_ndiv3 = gimple_expand_builtin_powi (gsi, loc, arg0,
abs (n / 3)); abs_hwi (n / 3));
if (!powi_x_ndiv3) if (!powi_x_ndiv3)
return NULL_TREE; return NULL_TREE;
} }
@ -1297,14 +1298,14 @@ gimple_expand_builtin_pow (gimple_stmt_iterator *gsi, location_t loc,
either cbrt(x) or cbrt(x) * cbrt(x). */ either cbrt(x) or cbrt(x) * cbrt(x). */
cbrt_x = build_and_insert_call (gsi, loc, &target, cbrtfn, arg0); 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; powi_cbrt_x = cbrt_x;
else else
powi_cbrt_x = build_and_insert_binop (gsi, loc, target, MULT_EXPR, powi_cbrt_x = build_and_insert_binop (gsi, loc, target, MULT_EXPR,
cbrt_x, cbrt_x); cbrt_x, cbrt_x);
/* Multiply the two subexpressions, unless powi(x,abs(n)/3) = 1. */ /* Multiply the two subexpressions, unless powi(x,abs(n)/3) = 1. */
if (abs (n) < 3) if (abs_hwi (n) < 3)
result = powi_cbrt_x; result = powi_cbrt_x;
else else
result = build_and_insert_binop (gsi, loc, target, MULT_EXPR, result = build_and_insert_binop (gsi, loc, target, MULT_EXPR,