diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-01-27 08:26:13 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-01-27 08:26:13 +0000 |
| commit | e80d050d50fac0a21647b0a6553f37237d4d2cd1 (patch) | |
| tree | efd1cdf9e7ff72e23d172b15b2d7aa785d5a4b43 | |
| parent | 591970b4bb30fdf92a458188588a82abebf02225 (diff) | |
| download | gcc-e80d050d50fac0a21647b0a6553f37237d4d2cd1.tar.gz | |
PR tree-optimization/64807
* wide-int.cc (wi::divmod_internal): Clear
b_dividend[dividend_blocks_needed].
* gcc.dg/pr64807.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@220153 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr64807.c | 19 | ||||
| -rw-r--r-- | gcc/wide-int.cc | 1 |
4 files changed, 29 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5add60716b0..05b5f74665c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2015-01-27 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/64807 + * wide-int.cc (wi::divmod_internal): Clear + b_dividend[dividend_blocks_needed]. + 2015-01-26 DJ Delorie <dj@redhat.com> * config/rl78/rl78.c (move_elim_pass): Don't optimize away diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 57a58b40a14..f148ca15ed1 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,8 @@ 2015-01-27 Jakub Jelinek <jakub@redhat.com> + PR tree-optimization/64807 + * gcc.dg/pr64807.c: New test. + PR c/64766 * gcc.dg/pr64766.c: New test. diff --git a/gcc/testsuite/gcc.dg/pr64807.c b/gcc/testsuite/gcc.dg/pr64807.c new file mode 100644 index 00000000000..e1bd604be00 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr64807.c @@ -0,0 +1,19 @@ +/* PR tree-optimization/64807 */ +/* { dg-do run { target int128 } } */ +/* { dg-options "-O2" } */ + +__uint128_t +foo (void) +{ + __uint128_t a = -1; + __uint128_t b = -1; + return a / b; +} + +int +main () +{ + if (foo () != 1) + __builtin_abort (); + return 0; +} diff --git a/gcc/wide-int.cc b/gcc/wide-int.cc index 1143b489499..fd7cbb4c384 100644 --- a/gcc/wide-int.cc +++ b/gcc/wide-int.cc @@ -1819,6 +1819,7 @@ wi::divmod_internal (HOST_WIDE_INT *quotient, unsigned int *remainder_len, divisor_blocks_needed, divisor_prec, sgn); m = dividend_blocks_needed; + b_dividend[m] = 0; while (m > 1 && b_dividend[m - 1] == 0) m--; |