0bb385941b
exp_cnt (expInstsIssued in the code) is used in the waitcnt instruction to track that data has been read out of VGPRs in previous global memory instructions, making it safe to overwrite the VGPRs used in said global memory instructions. Previously, exp_cnt wasn't being tracked at all, which lead to the waitcnt finishing immediately, leading to the memory instruction's VPGRs getting overwritten by subsequent instructions, causing errors. This patch makes it so waitcnts waiting on exp_cnt will wait for MUBUF buffer store instructions to read their VGPRs before completing Change-Id: Idd2b59511bc086cf316217da27b7a228272b0b0f Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/37555 Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com> Reviewed-by: Alexandru Duțu <alexandru.dutu@amd.com> Maintainer: Matt Sinclair <mattdsinclair@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>