http://llvm.org/bugs/show_bug.cgi?id=17481
Bug ID: 17481
Summary: add __sync_val_compare_and_swap_16
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Compiling this with clang (on a cpu type with the cmpxchg16b feature disabled):
int main(void) { __int128_t a, b, c; __sync_val_compare_and_swap(&a, b, c); }
won me this:
Unexpected value type for atomic!
UNREACHABLE executed at LegalizeIntegerTypes.cpp:1201!
[...]
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module '-'.
4. Running pass 'X86 DAG->DAG Instruction Selection' on function '@main'
clang: error: unable to execute command: Aborted (core dumped)
GCC emits a call to __sync_val_compare_and_swap_16.
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