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| author | Jakub Jelinek <jakub@redhat.com> | 2018-05-14 17:53:58 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2018-05-14 17:53:58 +0200 |
| commit | 9c1326aa5f8031cb37fc6efb9a1e373aa50ffd48 (patch) | |
| tree | e01d8b22bf6a56b33c93e5ee0f9722121e54ff3d /gcc/testsuite/gcc.c-torture | |
| parent | cd2f262b2fa4292a39b97ab590b46e79d349817c (diff) | |
| download | gcc-9c1326aa5f8031cb37fc6efb9a1e373aa50ffd48.zip gcc-9c1326aa5f8031cb37fc6efb9a1e373aa50ffd48.tar.gz gcc-9c1326aa5f8031cb37fc6efb9a1e373aa50ffd48.tar.bz2 | |
re PR target/85756 (wrong code at -Os on x86-64-linux-gnu in 32-bit mode)
PR target/85756
* config/i386/i386.md: Disallow non-commutative arithmetics in
last twpeephole for mem {+,-,&,|,^}= x; mem != 0 after cmpelim
optimization. Use COMMUTATIVE_ARITH_P test rather than != MINUS
in the peephole2 before it.
testsuite/ChangeLog:
* gcc.c-torture/execute/pr85756.c: New test.
From-SVN: r260231
Diffstat (limited to 'gcc/testsuite/gcc.c-torture')
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/pr85756.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/pr85756.c b/gcc/testsuite/gcc.c-torture/execute/pr85756.c new file mode 100644 index 0000000..8c95966 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr85756.c @@ -0,0 +1,50 @@ +/* PR target/85756 */ + +#if __CHAR_BIT__ == 8 && __SIZEOF_SHORT__ == 2 && __SIZEOF_INT__ == 4 +int a, c, *e, f, h = 10; +short b; +unsigned int p; + +__attribute__((noipa)) void +bar (int a) +{ + asm volatile ("" : : "r" (a) : "memory"); +} + +void +foo () +{ + unsigned j = 1, m = 430523; + int k, n = 1, *l = &h; +lab: + p = m; + m = -((~65535U | j) - n); + f = b << ~(n - 8); + n = (m || b) ^ f; + j = p; + if (p < m) + *l = k < 3; + if (!n) + l = &k; + if (c) + { + bar (a); + goto lab; + } + if (!*l) + *e = 1; +} + +int +main () +{ + foo (); + return 0; +} +#else +int +main () +{ + return 0; +} +#endif |