| Issue |
163888
|
| Summary |
[CIR] Upstream handling for overflow builtins
|
| Labels |
ClangIR
|
| Assignees |
|
| Reporter |
andykaylor
|
### Overview
Upstream handling for the `__builtin_add_overflow`, `__builtin_sub_overflow`, and `__builtin_mul_overflow` functions, including implemetation and lowering of the `cir.binop.overflow` operation and the related variations of these builtins.
### Suggested minimal test case
```
bool test_add_overflow_uint_uint_uint(unsigned x, unsigned y, unsigned *res) {
return __builtin_add_overflow(x, y, res);
}
```
### Existing incubator tests
clang/test/CIR/CodeGen/builtins-overflow.cpp
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