| Issue |
98947
|
| Summary |
Clang doesn't accept LOCK prefix in assembler
|
| Labels |
clang
|
| Assignees |
|
| Reporter |
VorfeedCanal
|
As you can see all versions of GCC, even ancient ones accept `lock` as prefix: https://godbolt.org/z/q83EP7vc8
```
asm("LOCK CMPXCHGW %DI, 32768(%EDI,%EDI,8)");
```
Clang rejects it and if you put `LOCK` on separate line it comes before other prefixes while GCC puts it after.
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