| Issue |
58167
|
| Summary |
[AMDGPU][GFX8+] Incorrect src1 handling for v_cmpx_class_f16, v_cmp_class_f16, v_ldexp_f16
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
dpreobra
|
GFX8+ hardware incorrectly handles floating-point inline constants when they are used with 16-bit integer operands. We have a patch to workaround the issue: https://reviews.llvm.org/D81841.
However, opcodes `v_cmpx_class_f16`, `v_cmp_class_f16` and `v_ldexp_f16` are an exception. These opcodes have 16-bit integer `src1` operand but hardware treats this operand as if it has f16 type.
Currently, `src1` is handled incorrectly by the compiler. The operand either has a wrong type or it is affected by the patch (though it should not).
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