re PR tree-optimization/54471 (FAIL: gcc.dg/sms-8.c execution test)
PR tree-optimization/54471 * tree-vrp.c (extract_range_from_binary_expr_1): For MULT_EXPR, don't canonicalize range if min2 is zero. * gcc.dg/tree-ssa/vrp86.c: New test. * gcc.c-torture/execute/pr54471.c: New test. From-SVN: r193806
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2012-11-26 Jakub Jelinek <jakub@redhat.com>
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PR tree-optimization/54471
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* tree-vrp.c (extract_range_from_binary_expr_1): For MULT_EXPR,
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don't canonicalize range if min2 is zero.
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2012-11-26 Hans-Peter Nilsson <hp@bitrange.com>
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PR middle-end/55030
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@ -1,3 +1,9 @@
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2012-11-26 Jakub Jelinek <jakub@redhat.com>
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PR tree-optimization/54471
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* gcc.dg/tree-ssa/vrp86.c: New test.
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* gcc.c-torture/execute/pr54471.c: New test.
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2012-11-26 Hans-Peter Nilsson <hp@bitrange.com>
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PR middle-end/55030
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/* PR tree-optimization/54471 */
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#ifdef __SIZEOF_INT128__
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#define T __int128
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#else
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#define T long long
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#endif
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extern void abort (void);
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__attribute__ ((noinline))
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unsigned T
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foo (T ixi, unsigned ctr)
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{
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unsigned T irslt = 1;
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T ix = ixi;
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for (; ctr; ctr--)
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{
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irslt *= ix;
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ix *= ix;
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}
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if (irslt != 14348907)
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abort ();
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return irslt;
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}
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int
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main ()
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{
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unsigned T res;
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res = foo (3, 4);
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return 0;
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}
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@ -0,0 +1,28 @@
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/* PR tree-optimization/54471 */
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/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-vrp1" } */
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#ifdef __SIZEOF_INT128__
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#define T __int128
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#else
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#define T long long
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#endif
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void fn1call (void);
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void fn2call (void);
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void
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foo (unsigned T x)
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{
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if (x > (unsigned T) -3)
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return;
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unsigned T y = 2 * x;
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if (y == 42)
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fn1call ();
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else
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fn2call ();
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}
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/* { dg-final { scan-tree-dump "fn1call" "vrp1"} } */
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/* { dg-final { scan-tree-dump "fn2call" "vrp1"} } */
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/* { dg-final { cleanup-tree-dump "vrp1" } } */
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@ -2653,7 +2653,7 @@ extract_range_from_binary_expr_1 (value_range_t *vr,
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if (TYPE_UNSIGNED (expr_type))
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{
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double_int min2 = size - min0;
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if (min2.cmp (max0, true) < 0)
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if (!min2.is_zero () && min2.cmp (max0, true) < 0)
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{
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min0 = -min2;
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max0 -= size;
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@ -2661,7 +2661,7 @@ extract_range_from_binary_expr_1 (value_range_t *vr,
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}
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min2 = size - min1;
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if (min2.cmp (max1, true) < 0)
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if (!min2.is_zero () && min2.cmp (max1, true) < 0)
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{
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min1 = -min2;
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max1 -= size;
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