re PR tree-optimization/64454 (optimize (x%5)%5)
2015-05-09 Marc Glisse <marc.glisse@inria.fr> PR tree-optimization/64454 gcc/ * tree-vrp.c (extract_range_from_binary_expr_1) <TRUNC_MOD_EXPR>: Rewrite. gcc/testsuite/ * gcc.dg/tree-ssa/vrp97.c: New file. * gcc.dg/vect/slp-perm-7.c: Update. From-SVN: r222970
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2015-05-09 Marc Glisse <marc.glisse@inria.fr>
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PR tree-optimization/64454
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* tree-vrp.c (extract_range_from_binary_expr_1) <TRUNC_MOD_EXPR>:
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Rewrite.
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2015-05-08 Jason Merrill <jason@redhat.com>
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* bitmap.c, c/c-aux-info.c, cfg.c, cfghooks.c, cgraph.c,
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@ -1,3 +1,9 @@
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2015-05-09 Marc Glisse <marc.glisse@inria.fr>
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PR tree-optimization/64454
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* gcc.dg/tree-ssa/vrp97.c: New file.
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* gcc.dg/vect/slp-perm-7.c: Update.
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2015-05-09 Andre Vehreschild <vehre@gmx.de>
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PR fortran/65894
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/* PR tree-optimization/64454 */
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/* { dg-options "-O2 -fdump-tree-vrp1" } */
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int f(int a, int b)
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{
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if (a < -3 || a > 13) __builtin_unreachable();
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if (b < -6 || b > 9) __builtin_unreachable();
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int c = a % b;
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return c >= -3 && c <= 8;
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}
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int g(int a, int b)
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{
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int c = a % b;
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return c != -__INT_MAX__ - 1;
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}
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/* { dg-final { scan-tree-dump-times "return 1;" 2 "vrp1" } } */
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/* { dg-final { cleanup-tree-dump "vrp1" } } */
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@ -70,7 +70,7 @@ int main (int argc, const char* argv[])
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return 0;
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}
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/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_perm } } } */
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/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { target vect_perm } } } */
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/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { target vect_perm } } } */
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/* { dg-final { cleanup-tree-dump "vect" } } */
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@ -3196,26 +3196,60 @@ extract_range_from_binary_expr_1 (value_range_t *vr,
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}
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else if (code == TRUNC_MOD_EXPR)
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{
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if (vr1.type != VR_RANGE
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|| range_includes_zero_p (vr1.min, vr1.max) != 0
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|| vrp_val_is_min (vr1.min))
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if (range_is_null (&vr1))
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{
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set_value_range_to_varying (vr);
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set_value_range_to_undefined (vr);
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return;
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}
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/* ABS (A % B) < ABS (B) and either
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0 <= A % B <= A or A <= A % B <= 0. */
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type = VR_RANGE;
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/* Compute MAX <|vr1.min|, |vr1.max|> - 1. */
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max = fold_unary_to_constant (ABS_EXPR, expr_type, vr1.min);
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if (tree_int_cst_lt (max, vr1.max))
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max = vr1.max;
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max = int_const_binop (MINUS_EXPR, max, build_int_cst (TREE_TYPE (max), 1));
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/* If the dividend is non-negative the modulus will be
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non-negative as well. */
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if (TYPE_UNSIGNED (expr_type)
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|| value_range_nonnegative_p (&vr0))
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min = build_int_cst (TREE_TYPE (max), 0);
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signop sgn = TYPE_SIGN (expr_type);
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unsigned int prec = TYPE_PRECISION (expr_type);
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wide_int wmin, wmax, tmp;
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wide_int zero = wi::zero (prec);
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wide_int one = wi::one (prec);
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if (vr1.type == VR_RANGE && !symbolic_range_p (&vr1))
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{
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wmax = wi::sub (vr1.max, one);
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if (sgn == SIGNED)
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{
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tmp = wi::sub (wi::minus_one (prec), vr1.min);
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wmax = wi::smax (wmax, tmp);
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}
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}
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else
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min = fold_unary_to_constant (NEGATE_EXPR, expr_type, max);
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{
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wmax = wi::max_value (prec, sgn);
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/* X % INT_MIN may be INT_MAX. */
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if (sgn == UNSIGNED)
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wmax = wmax - one;
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}
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if (sgn == UNSIGNED)
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wmin = zero;
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else
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{
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wmin = -wmax;
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if (vr0.type == VR_RANGE && TREE_CODE (vr0.min) == INTEGER_CST)
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{
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tmp = vr0.min;
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if (wi::gts_p (tmp, zero))
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tmp = zero;
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wmin = wi::smax (wmin, tmp);
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}
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}
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if (vr0.type == VR_RANGE && TREE_CODE (vr0.max) == INTEGER_CST)
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{
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tmp = vr0.max;
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if (sgn == SIGNED && wi::neg_p (tmp))
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tmp = zero;
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wmax = wi::min (wmax, tmp, sgn);
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}
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min = wide_int_to_tree (expr_type, wmin);
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max = wide_int_to_tree (expr_type, wmax);
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}
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else if (code == BIT_AND_EXPR || code == BIT_IOR_EXPR || code == BIT_XOR_EXPR)
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{
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