[AMDGPU] Detect score wraparound when VA_VDST increments by two On subtargets with hasVOP3PX2IncrementsVaVdstTwice, VOP3PX2 instructions such as V_WMMA_SCALE increment VA_VDST by two. If the upper bound is UINT_MAX at that point, UB + 2 wraps to 1, which the CurrScore == 0 check does not catch. Check CurrScore <= UB instead, which catches a wrap for any positive increment.
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