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| author | Dmitry Vyukov <dvyukov@google.com> | 2021-04-21 08:01:30 +0200 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2021-04-21 14:05:20 +0200 |
| commit | ad3ce6afab30fb68cfcda40a1910b87279795c5a (patch) | |
| tree | 6a6febdaae83e071a85576bb6fa1fd5b8abb2936 /sys/linux/test/file_immutable | |
| parent | 7ffd6ad61b0d0c6290f73b3652f79c63b305351e (diff) | |
pkg/compiler: optimize array[const] representation
Represent array[const[X, int8], N] as string["XX...X"].
This replaces potentially huge number of:
NONFAILING(*(uint8_t*)0x2000126c = 0);
NONFAILING(*(uint8_t*)0x2000126d = 0);
NONFAILING(*(uint8_t*)0x2000126e = 0);
with a single memcpy. In one reproducer we had 3991 such lines.
Also replace memcpy's with memset's when possible.
Update #1070
Diffstat (limited to 'sys/linux/test/file_immutable')
| -rw-r--r-- | sys/linux/test/file_immutable | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/linux/test/file_immutable b/sys/linux/test/file_immutable index f9df5ddc9..46c81692e 100644 --- a/sys/linux/test/file_immutable +++ b/sys/linux/test/file_immutable @@ -4,7 +4,7 @@ # requires: -sandbox=namespace -sandbox=setuid r0 = openat(0xffffffffffffff9c, &AUTO='./file0\x00', 0x26e1, 0x0) -ioctl$FS_IOC_FSSETXATTR(r0, 0x40086602, &AUTO={0x17e, 0x0, 0x0, 0x0, 0x0, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}) +ioctl$FS_IOC_FSSETXATTR(r0, 0x40086602, &AUTO={0x17e, 0x0, 0x0, 0x0, 0x0, "0000000000000000"}) mkdirat(0xffffffffffffff9c, &AUTO='./file1\x00', 0x1ff) r1 = openat(0xffffffffffffff9c, &AUTO='./file1\x00', 0x0, 0x0) -ioctl$FS_IOC_FSSETXATTR(r1, 0x40086602, &AUTO={0x17e, 0x0, 0x0, 0x0, 0x0, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0]}) +ioctl$FS_IOC_FSSETXATTR(r1, 0x40086602, &AUTO={0x17e, 0x0, 0x0, 0x0, 0x0, "0000000000000000"}) |