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| author | Jakub Jelinek <jakub@redhat.com> | 2016-03-09 21:05:40 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2016-03-09 21:05:40 +0100 |
| commit | 2bd8090ff56fdf1ca9ed76a9668a30f4e7d8f949 (patch) | |
| tree | f35508be294e118a3e7415d51eb9fb7035a843fa /gcc | |
| parent | 96b3c82df1fffef2f30045d571589be8d866aaf4 (diff) | |
| download | gcc-2bd8090ff56fdf1ca9ed76a9668a30f4e7d8f949.tar.gz | |
re PR middle-end/70127 (wrong code on x86_64-linux-gnu at -O3 in 32-bit and 64-bit modes)
PR tree-optimization/70127
* fold-const.c (operand_equal_p): Revert the 2015-10-28 change.
* gcc.c-torture/execute/pr70127.c: New test.
From-SVN: r234090
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/fold-const.c | 3 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/pr70127.c | 23 |
4 files changed, 36 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d3323a62a8a..1f91bb11053 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2016-03-08 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/70127 + * fold-const.c (operand_equal_p): Revert the 2015-10-28 change. + 2016-03-09 David Malcolm <dmalcolm@redhat.com> PR c/68473 diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 21241db5a49..696b4a6996f 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -3032,6 +3032,9 @@ operand_equal_p (const_tree arg0, const_tree arg1, unsigned int flags) TYPE_SIZE (TREE_TYPE (arg1)), flags))) return 0; + /* Verify that access happens in similar types. */ + if (!types_compatible_p (TREE_TYPE (arg0), TREE_TYPE (arg1))) + return 0; /* Verify that accesses are TBAA compatible. */ if (!alias_ptr_types_compatible_p (TREE_TYPE (TREE_OPERAND (arg0, 1)), diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 31dd65e20b7..e611b29be0f 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-03-08 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/70127 + * gcc.c-torture/execute/pr70127.c: New test. + 2016-03-09 Cesar Philippidis <cesar@codesourcery.com> * c-c++-common/goacc/combined-directives-2.c: New test. diff --git a/gcc/testsuite/gcc.c-torture/execute/pr70127.c b/gcc/testsuite/gcc.c-torture/execute/pr70127.c new file mode 100644 index 00000000000..a0bf3c02830 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr70127.c @@ -0,0 +1,23 @@ +/* PR tree-optimization/70127 */ + +struct S { int f; signed int g : 2; } a[1], c = {5, 1}, d; +short b; + +__attribute__((noinline, noclone)) void +foo (int x) +{ + if (x != 1) + __builtin_abort (); +} + +int +main () +{ + while (b++ <= 0) + { + struct S e = {1, 1}; + d = e = a[0] = c; + } + foo (a[0].g); + return 0; +} |