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| author | Jakub Jelinek <jakub@gcc.gnu.org> | 2013-12-02 23:41:23 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2013-12-02 23:41:23 +0100 |
| commit | 5ef0de9b1f67793d72ee02fa1c3215935f810c78 (patch) | |
| tree | c3e546c3383a949708c786e474d4eb6b6121838b /gcc/tree-vrp.c | |
| parent | 165b9e93525aaf88f9ef7dac6067e3ed040d9a2b (diff) | |
| download | gcc-5ef0de9b1f67793d72ee02fa1c3215935f810c78.zip gcc-5ef0de9b1f67793d72ee02fa1c3215935f810c78.tar.gz gcc-5ef0de9b1f67793d72ee02fa1c3215935f810c78.tar.bz2 | |
re PR tree-optimization/59358 (Infinite loop generated with >=O2)
PR tree-optimization/59358
* tree-vrp.c (union_ranges): To check for the partially
overlapping ranges or adjacent ranges, also compare *vr0max
with vr1max.
* gcc.c-torture/execute/pr59358.c: New test.
From-SVN: r205607
Diffstat (limited to 'gcc/tree-vrp.c')
| -rw-r--r-- | gcc/tree-vrp.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c index ce2de47..89f2ffd 100644 --- a/gcc/tree-vrp.c +++ b/gcc/tree-vrp.c @@ -7758,7 +7758,8 @@ union_ranges (enum value_range_type *vr0type, } else if ((operand_less_p (vr1min, *vr0max) == 1 || operand_equal_p (vr1min, *vr0max, 0)) - && operand_less_p (*vr0min, vr1min) == 1) + && operand_less_p (*vr0min, vr1min) == 1 + && operand_less_p (*vr0max, vr1max) == 1) { /* [ ( ] ) or [ ]( ) */ if (*vr0type == VR_RANGE @@ -7792,7 +7793,8 @@ union_ranges (enum value_range_type *vr0type, } else if ((operand_less_p (*vr0min, vr1max) == 1 || operand_equal_p (*vr0min, vr1max, 0)) - && operand_less_p (vr1min, *vr0min) == 1) + && operand_less_p (vr1min, *vr0min) == 1 + && operand_less_p (vr1max, *vr0max) == 1) { /* ( [ ) ] or ( )[ ] */ if (*vr0type == VR_RANGE |