https://llvm.org/bugs/show_bug.cgi?id=30829
Bug ID: 30829
Summary: [mc][gfx8] No checks for ADDC/SUBB/V_CNDMASK source
operand restrictions
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: Backend: AMDGPU
Assignee: artem.tama...@amd.com
Reporter: i.am.permi...@gmail.com
CC: andrey.kasau...@gmail.com, artem.tama...@amd.com,
i.am.permi...@gmail.com, llvm-bugs@lists.llvm.org,
nikolay.haus...@amd.com, sam.kol...@amd.com,
valery.pykh...@gmail.com
Classification: Unclassified
SGPR, M0, EXEC or literal constant are not allowed for ADDC/SUBB/V_CNDMASK
instructions. Still assembler allows illegal encodings like:
v_addc_u32 v40, vcc, s49, 0, vcc
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