diff options
| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-12-15 22:15:30 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-12-15 22:15:30 +0000 |
| commit | 604f8abb2bcbd162e61c49d408b99357712d592a (patch) | |
| tree | 259c1117838452e7f49ae998992c0cea9dbdb86d /gcc/testsuite/gcc.c-torture/execute | |
| parent | 0e9c9350c0d92ca3e9dc556eef55f05a5197073b (diff) | |
PR tree-optimization/83269
* fold-const.c (fold_binary_loc): Perform (-A) - B -> (-B) - A
subtraction in arg0's type if type is signed and arg0 is unsigned.
Formatting fix.
* gcc.c-torture/execute/pr83269.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@255729 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.c-torture/execute')
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/pr83269.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/pr83269.c b/gcc/testsuite/gcc.c-torture/execute/pr83269.c new file mode 100644 index 00000000000..37fc5d14db7 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr83269.c @@ -0,0 +1,14 @@ +/* PR tree-optimization/83269 */ + +int +main () +{ +#if __SIZEOF_INT__ == 4 && __SIZEOF_LONG_LONG__ > 4 && __CHAR_BIT__ == 8 + volatile unsigned char a = 1; + long long b = 0x80000000L; + int c = -((int)(-b) - (-0x7fffffff * a)); + if (c != 1) + __builtin_abort (); +#endif + return 0; +} |