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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/test | |
| 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/test')
| -rw-r--r-- | sys/test/csource.txt | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/test/csource.txt b/sys/test/csource.txt index 0d1c847eb..e4c447b54 100644 --- a/sys/test/csource.txt +++ b/sys/test/csource.txt @@ -9,5 +9,6 @@ csource0(a int32) fd0 csource1(a fd0) csource2(a ptr[in, array[int8]]) csource3(a ptr[in, array[const[0, int8], 10]]) -csource4(a ptr[in, array[const[0xab, int8], 10]]) -csource5(a ptr[in, array[const[0x12345678, int32], 4]]) +csource4(a ptr[in, array[const[0x30, int8], 10]]) +csource5(a ptr[in, array[const[0x3130, int16], 5]]) +csource6(a ptr[in, array[const[0x3130, int16be], 6]]) |