Fix error-that-should-be-warning, code may or may not be correct

Author: linuxrocks123

llvm/lib/Target/AMDGPU/AMDGPUIGroupLP.cpp

@@ -2410,6 +2410,8 @@ bool SchedGroup::canAddMI(const MachineInstr &MI) const {
     unsigned long InlineAsmMask = 0;
     if (VGPR_used && !VMFMA_used && !MayLoad && !MayStore)
       InlineAsmMask |= (unsigned long)SchedGroupMask::VALU;
+    if (SGPR_used && !MayLoad && !MayStore) //arsenm: should this have !VGPR_used?
+      InlineAsmMask |= (unsigned long)SchedGroupMask::SALU;
     if (VMFMA_used)
       InlineAsmMask |= (unsigned long)SchedGroupMask::MFMA;
     if (VGPR_used && MayLoad)